Graviton's O to E Converter Line UP

O to E Converter Line Up --- Contents --- 　Graviton's O to E converter makes easy optoelectronic instrumentation in cost effective way. Just attach the converter onto the input terminal of your electronic instrument then you can observe optical power waveforms. * O to E Top Page * Selection Guide * Small Size, Light Weight * O to E for Visible Light （Max NA = 0.2, 0.25） SPD-1_650nm SPD-1_850nm SPD-2_650nm SPD-2_850nm SPD-3 SPD-4 * O to E for Visible Light (Max NA = 0.5) SPA-2_650nm SPA-3 SPA-4 Graviton's O to E converters are very small and light.　No damege of the input terminals of your electronic equipments. * O to E for Visible Light （High Sensitivity Models） * Easy to attach, Easy to connect SPS-1 SPS-2 * O to E for NIR Light LPD-1 LPD-2 LPS-1 LPS-2 * Frequency Caracteristics dependence on the wavelength * Options and Accesories * Contact Information

　[1] Just attach the O to E converter onto your electronic instrument, [2] Supply the DC power to the converter, [3] Turn on the DC power switch of the converter, [4] Connect the optical signal you want observe. Then adjust the voltage range, time range, or frequency range of the electronic instrument. * Outstanding Detection Area Graviton's O to E converter has Graviton's original lens system incarnates outstanding detection area. Maximum detection diameter is up to 1mm, and Maximum NA range is up to 0.5. （SPD-1, LPD-1, and SPS-1 is configured by a photodetector with a ball lens.） * Wide bandwidth conversion from DC up to GHz Transimpedanse amplifire inside Graviton's converter is configured by discrete transistor devices. The TIA circuitry is effective to get wide band O to E conversion from DC up to GHz, and high sensitivity. Also the offset voltage is very low since the DC servo circuit system.

Selection Guide of O to E Converters --- Contents --- Selection Guide of O to E Converters * O to E Top Page Graviton offers a variety of O/E converter models, by the requested features of; Wavelength range, Reference wavelength, Acceptable core diameter, Input NA, and Conversion * Selection Guide frequency bandwidth. * O to E for Visible Light * O to E Converters for Visible Light （Max NA = 0.2, 0.25） （Max NA = 0.2, 0.25） SPD-1_650nm Model Name Wavelength Range Ref. Wavelength Sensitivity Max Max SPD-1_850nm Core NA Bandwidth tr/tf SPD- SPD-2_650nm 1_650nm 320 to 1000nm 658nm 500V/W 0.8mm 0.2 DC to 1.2GHz 290ps SPD-2_850nm SPD- 1_850nm 320 to 1000nm 850nm 500V/W 0.8mm 0.2 DC to 1.2GHz 290psSPD-3 SPD- SPD-4 2_650nm 380 to 1000nm 658nm 1000V/W 1.0mm 0.25 DC to 1.2GHz 290ps * O to E for Visible Light SPD-2_850nm 380 to 1000nm 850nm 1000V/W 1.0mm 0.25 DC to 1.2GHz 290ps(Max NA = 0.5) SPD-3 380 to 950nm 850nm 500V/W 0.5mm 0.25 DC to 2.0GHz 190ps SPA-2_650nm SPD-4 380 to 1000nm 850nm 300V/W 0.5mm 0.25 DC to 3.0GHz 150ps SPA-3 SPA-4 * O to E Converters for Visible Light （Max NA = 0.5) * O to E for Visible Light Model Name Wavelength Ref. Max （High Sensitivity Range Wavelength Sensitivity Max Core NA Bandwidth tr/tf Models） SPA- 2_650nm 400 to 1000nm 658nm 1000V/W 1.0mm 0.5 DC to 1.0GHz 370psSPS-1 SPA-3 380 to 950nm 850nm 500V/W 0.25mm 0.5 DC to 2.0GHz 190ps SPS-2 SPA-4 380 to 950nm 850nm 300V/W 0.25mm 0.5 DC to 3.0GHz 150ps * O to E for NIR Light LPD-1 * O to E Converters for Visible Light （High Sensitivity Models） LPD-2 Model Name Wavelength Ref. Range Wavelength Sensitivity Max Max Core NA Bandwidth tr/tf LPS-1 SPS-1_10KV/ W 320 to 1000nm 850nm 10KV/W 0.8mm 0.2 DC to 100MHz 3.6nsLPS-2 SPS- * Frequency 1_100KV/W 320 to 1000nm 850nm 100KV/W 0.8mm 0.2 DC to 15MHz 28ns Caracteristics dependence on the SPS-2_10KV/ W 400 to 1000nm 850nm 10KV/W 1.0mm 0.5 DC to 100MHz 3.6nswavelength SPS- * Options and Accesories 2_100KV/W 400 to 1000nm 850nm 100KV/W 1.0mm 0.5 DC to 15MHz 28ns * Contact Information * O to E Converters for NIR Light （Using InGaAs PIN PD） Model Name Wavelength Ref. Range Wavelength Sensitivity Max Core Max NA Bandwidth tr/tf LPD-1 900 to 1650nm 1310nm 500V/W 0.08mm 0.2 DC to 1.5GHz 250ps LPD-2 950 to 1650nm 1310nm 1000V/W 0.5mm 0.25 DC to 1.5GHz 250ps

LPS- 1_20KV/W 900 to 1650nm 1310nm 20KV/W 0.08mm 0.2 DC to 100MHz 3.5ns LPS- 2_20KV/W 950 to 1650nm 1310nm 20KV/W 0.5mm 0.25 DC to 100MHz 3.5ns ** For 650nm standard model and 850nm standard model ** Photodetector, which is currently build in SPD-1, SPD-2, and SPA-2, has the wavelength dependency of a frequency characteristic, and the frequency characteristic of photodetector changes in the range of, approximately, 1MHz to 100MHz. Therefore, a frequency characteristic of SPD-1_650nm, SPD-2_650nm, and SPA-2_650nm, is designed and tuned to be flat at 650 nm. Also, the frequency characteristic of SPD-1_850nm and for SPD-2_850nm is designed to be flat at 850 nm. For customers who need several wavelengths measurements, it is recommend the use of SPD-3, SPD-4, SPA-3, SPA-4 with PD which has less frequency characteristic dependence on the wavelength. ** About the minimum fiber diameter ** The core diameter of the fiber, to be connected to the SPA-2_650nm, is 100um diameter or more. When a fiber with a thin fiber core diameter is used, the optical spot at the photodetector becomes so small, that the frequency characteristics of the product is not maintained.

SPD-1_650nm & SPD-1_850nm --- Contents --- SPD-1_650nm & SPD-1_850nm (Max Core = 0.8mm, Max NA = 0.2, 500V/W@658nm or 850nm, DC to 1.2GHz) * O to E Top Page * Selection Guide * O to E for Visible Light Features （Max NA = 0.2, 0.25） * High Sensitivity, 500V/W SPD-1_650nm SPD-1_850nm * Wide Bandwidth, from DC up to 1.2GHz SPD-2_650nm * Small Offset Voltage, 0.5mV or less SPD-2_850nm * 93mm x 44mm x 21mm, 110 grams SPD-3 * JPY 230,000 for direct sales (Excluded tax and shipping cost) SPD-4 * O to E for Visible Light (Max NA = 0.5) SPD-1 is a low cost O to E converter configured by a silicon PIN photodetector with a ball lens, SPA-2_650nm and Graviton's original TIA circuitry. SPD-1_650nm is tuned for the wavelength of 658nm, and SPD-1_850nm is for 850nm. Caution that the frequency characteristics compensation of SPA-3 photodetector is different between SPD-1_650nm and SPD-1_850nm. SPA-4 * Specifications of SPD-1_650nm & SPD-1_850nm * O to E for Visible Light （High Sensitivity Models） Model Name SPD-1_650nm SPD-1_850nm Reference Wavelength 658nm 850nm SPS-1 Wavelength Range 320 to 1000nm 320 to 1000nm SPS-2 Acceptable Maximum Core Diameter φ0.8mm φ0.8mm Acceptable NA Range 0.2 or less 0.2 or less * O to E for NIR Light Optical Input Connector FC receptacle FC receptacle LPD-1 Photodetector Type Si PIN PD Si PIN PD LPD-2 Active diameter of Photodetector φ0.4mm φ0.4mm Conversion Gain (at reference wavelength) 500V/W 500V/W LPS-1 Output Saturation Optical Input Power (Ref. wavelength) -1dBm -1dBm LPS-2 Conversion Bandwidth DC to 1.2GHz DC to 1.2GHz Output Noise Level 1.3mVrms or less 1.3mVrms or less* Frequency Caracteristics Noise Equivalent Optical Power (at reference wavelength) -26.0dBm or less -26.0dBm or less dependence on the Electrical Output Connector BNC plug BNC plug wavelength Output Impedance 50 ohms 50 ohms * Options and Accesories Output Offset Voltage 0.5mV or less 0.5mV or less * Contact Information DC Power Connector LEMO 0S-4P LEMO 0S-4P Supply Voltage DC±15V DC±15V Supply Current +150mA/-50mA +150mA/-50mA Dimensions 93 x 44 x 21mm 93 x 44 x 21mm Weight Applox. 110g Applox. 110g ** Optical input connector, electrical output connector is that of the standard model. ** Other types of connectors are available as a customer's option.

* Spectral Sensitivity (by Calculation) Spectral Sensitivity of SPD-1_650nm Ref. Wavelength = 658nm Peak Sensitivity wavelength = Applox. 770nm Sensitivity in Dominant Wavelength : 148 V/W at 400nm 267 V/W at 500nm 414 V/W at 600nm 545 V/W at 700nm 562 V/W at 800nm 395 V/W at 900nm Spectral Sensitivity of SPD-1_850nm Ref. Wavelength = 850nm Peak Sensitivity wavelength = Applox. 770nm Sensitivity in Dominant Wavelength : 149 V/W at 400nm 269 V/W at 500nm 417 V/W at 600nm 549 V/W at 700nm 566 V/W at 800nm 398 V/W at 900nm * Step Response & Frequency Characteristics (Examples) Step Response of SPD-1_650nm Frequency Characteristics of SPD-1_650nm Risetime = 287.2ps, Overshoot = 0.43% -3dB (Electrical) Frequency = Applox. 1.2GHz

Step Response of SPD-1_850nm Frequency Characteristics of SPD-1_850nm Risetime = 293ps, Overshoot = 0.81% -3dB (Electrical) Frequency = Applox. 1.2GHz

SPD-2_650nm & SPD-2_850nm --- Contents --- SPD-2_650nm & SPD-2_850nm (Max Core = 1mm, Max NA = 0.25, 1,000V/W@658nm or 850nm, DC to 1.2GHz) * O to E Top Page * Selection Guide Features * O to E for Visible Light （Max NA = 0.2, 0.25） * For High Speed POF, Max core = 1mm, Max NA = 0.5 SPD-1_650nm SPD-1_850nm * High Sensitivity, 1000V/W SPD-2_650nm * Wide Bandwidth, from DC up to 1.2GHz SPD-2_850nm * 103mm x 44mm x 21mm, 130 grams SPD-3 * JPY 290,000 for direct sales SPD-4 (Excluded tax and shipping cost) * O to E for Visible Light (Max NA = 0.5) SPD-2 is a O to E converter configured by a silicon PIN photodetector, Graviton's original lens SPA-2_650nm system, and TIA circuitry. The lens system incarnates large detection diameter of 1.0mm. SPD-2 is suitable for instrumentation of fiber communication systems using a large core POF. SPD- SPA-3 2_650nm is tuned for the wavelength of 658nm, and SPD-2_850nm is for 850nm. Caution that the frequency characteristics compensation of photodetector is different between SPD-2_650nm SPA-4 and SPD-2_850nm. * O to E for Visible Light （High Sensitivity * Specifications of SPD-2_650nm & SPD-2_850nm Models） SPS-1 Model Name SPD-2_650nm SPD-2_850nm Reference Wavelength 658nm 850nm SPS-2 Wavelength Range 380 to 1000nm 380 to 1000nm * O to E for NIR Light Acceptable Maximum Core Diameter φ1.0mm φ1.0mm Acceptable NA Range 0.25 or less 0.25 or less LPD-1 Optical Input Connector FC receptacle FC receptacle LPD-2 Photodetector Type Si PIN PD Si PIN PD LPS-1 Active diameter of Photodetector φ0.4mm φ0.4mm Conversion Gain (at reference wavelength) 1,000V/W 1,000V/W LPS-2 Output Saturation Optical Input Power (Ref. wavelength) -4dBm -4dBm * Frequency Conversion Bandwidth DC to 1.2GHz DC to 1.2GHz Caracteristics Output Noise Level 1.9mVrms or less 1.9mVrms or less dependence on the wavelength Noise Equivalent Optical Power (at reference wavelength) -27.3dBm or less -27.3dBm or less Electrical Output Connector BNC plug BNC plug * Options and Accesories Output Impedance 50 ohms 50 ohms * Contact Information Output Offset Voltage 0.5mV or less 0.5mV or less DC Power Connector LEMO 0S-4P LEMO 0S-4P Supply Voltage DC±15V DC±15V Supply Current +150mA/-50mA +150mA/-50mA Dimensions 103 x 44 x 21mm 103 x 44 x 21mm Weight Applox. 130g Applox. 130g

** Optical input connector, electrical output connector is that of the standard model. ** Other types of connectors are available as a customer's option. * Lens System Lens System of SPD-2 Maximum Acceptable Diameter = 1.0mm Maximum Acceptable NA = 0.25 Diameter of PD = 0.4mm Optical Magnification = 0.4 * Spectral Sensitivity (by Calculation) Spectral Sensitivity of SPD-2_650nm Ref. Wavelength = 658nm Peak Sensitivity wavelength = Applox. 770nm Sensitivity in Dominant Wavelength : 296 V/W at 400nm 535 V/W at 500nm 829 V/W at 600nm 1,090 V/W at 700nm 1,125 V/W at 800nm 790 V/W at 900nm Spectral Sensitivity of SPD-2_850nm Ref. Wavelength = 850nm Peak Sensitivity wavelength = Applox. 770nm Sensitivity in Dominant Wavelength : 298 V/W at 400nm 539 V/W at 500nm 834 V/W at 600nm 1,098 V/W at 700nm 1,133 V/W at 800nm 795 V/W at 900nm

* Step Response & Frequency Characteristics (Examples) Step Response of SPD-2_650nm Frequency Characteristics of SPD-2_650nm Risetime = 273.3ps, Overshoot = 1.60% -3dB (Electrical) Frequency = Applox. 1.2GHz Step Response of SPD-2_850nm Frequency Characteristics of SPD-2_850nm Risetime = 311ps, Overshoot = 0.29% -3dB (Electrical) Frequency = Applox. 1.2GHz

SPD-3 --- Contents --- SPD-3 (Max Core = 0.5mm, Max NA = 0.25, 500V/W@850nm, DC to 2GHz) * O to E Top Page * Selection Guide Features * O to E for Visible Light （Max NA = 0.2, 0.25） * For multi-wavelength instrumentation. Using a photodetector which does not have frequency characteristics SPD-1_650nm dependency on the wavelength. SPD-1_850nm * High Sensitivity, 500V/W SPD-2_650nm SPD-2_850nm * Wide Bandwidth, from DC up to 2.0GHz SPD-3 * 103mm x 44mm x 21mm, 130 grams SPD-4 * JPY 310,000 for direct sales (Excluded tax and shipping cost) * O to E for Visible Light (Max NA = 0.5) SPD-3 is a wide bandwidth O to E converter configured by a silicon PIN photodetector which does SPA-2_650nm not have "frequency characteristics dependency on the wavelength", Graviton's original lens system, and a TIA circuitry. The lens system incarnates large acceptable diameter up to 0.5mm. SPD- SPA-3 3 is suitable for instrumentation of multi-wavelength optical pick up. SPA-4 * Specifications of SPD-3 * O to E for Visible Light （High Sensitivity Models） Model Name SPD-3 Reference Wavelength 850nm SPS-1 Wavelength Range 380 to 950nm SPS-2 Acceptable Maximum Core Diameter φ0.5mm Acceptable NA Range 0.25 or less * O to E for NIR Light Optical Input Connector FC receptacle LPD-1 Photodetector Type Si PIN PD LPD-2 Active diameter of Photodetector φ0.2mm Conversion Gain (850nm) 500V/W LPS-1 Output Saturation Optical Input Power (850nm) -1dBm LPS-2 Conversion Bandwidth DC to 2GHz Output Noise Level 1.5mVrms or less * Frequency Caracteristics Noise Equivalent Optical Power (850nm) -25.2dBm or less dependence on the Electrical Output Connector BNC plug wavelength Output Impedance 50 ohms * Options and Accesories Output Offset Voltage 0.5mV or less DC Power Connector LEMO 0S-4P* Contact Information Supply Voltage DC±15V Supply Current +150mA/-50mA Dimensions 103 x 44 x 21mm Weight Applox. 130g ** Optical input connector, electrical output connector is that of the standard model. ** Other types of connectors are available as a customer's option.

* Lens System Lens System of SPD-3 Maximum Acceptable Diameter = 0.5mm Maximum Acceptable NA = 0.25 Diameter of PD = 0.2mm Optical Magnification = 0.4 * Spectral Sensitivity (by Calculation) Spectral Sensitivity of SPD-3 Ref. Wavelength = 850nm Peak Sensitivity wavelength = Applox. 700nm Sensitivity in Dominant Wavelength : 264 V/W at 400nm 438 V/W at 500nm 652 V/W at 600nm 772 V/W at 700nm 639 V/W at 800nm 341 V/W at 900nm * Step Response & Frequency Characteristics (Examples) Step Response of SPD-3 Frequency Characteristics of SPD-3 Risetime = 180ps, Overshoot = 3.66% -3dB (Electrical) Frequency = Applox. 2.0GHz

SPD-4 --- Contents --- SPD-4 (Max Core = 0.5mm, Max NA = 0.25, 300V/W@850nm, DC to 3GHz) * O to E Top Page * Selection Guide Features * O to E for Visible Light * For multi-wavelength instrumentation. （Max NA = 0.2, 0.25） Using a photodetector which does not have frequency characteristics dependency on the wavelength. SPD-1_650nm SPD-1_850nm * For High Speed GI-POF, Max NA = 0.25, Max Core = 0.5mm SPD-2_650nm SPD-2_850nm * Wide Bandwidth, from DC up to 3.0GHz SPD-3 * 103mm x 44mm x 21mm, 130 grams SPD-4 * JPY 370,000 for direct sales (Excluded tax and shipping cost) * O to E for Visible Light (Max NA = 0.5) SPD-4 is wide bandwidth O to E converter configured by a silicon PIN photodetector which does not have "frequency characteristics dependency on the wavelength", Graviton's original lens SPA-2_650nm system, and a wideband TIA circuitry. The lens system incarnates large acceptable core diameter up to 0.5mm. SPD-4 is suitable for instrumentation of multi-wavelength optical pick up and SPA-3 HFCS waveforms can be observed since wide bandwidth. SPA-4 * Specifications of SPD-4 * O to E for Visible Light （High Sensitivity Model Name SPD-4 Models） Reference Wavelength 850nm SPS-1 Wavelength Range 380 to 950nm SPS-2 Acceptable Maximum Core Diameter φ0.5mm Acceptable NA Range 0.25 or less * O to E for NIR Light Optical Input Connector FC receptacle LPD-1 Photodetector Type Si PIN PD LPD-2 Active diameter of Photodetector φ0.2mm Conversion Gain (850nm) 300V/W LPS-1 Output Saturation Optical Input Power (850nm) +1dBm LPS-2 Conversion Bandwidth DC to 3GHz Output Noise Level 1.8mVrms or less * Frequency Caracteristics Noise Equivalent Optical Power (850nm) -22.4dBm or less dependence on the Electrical Output Connector BNC plug wavelength Output Impedance 50 ohms * Options and Accesories Output Offset Voltage 0.5mV or less DC Power Connector LEMO 0S-4P * Contact Information Supply Voltage DC±15V Supply Current +150mA/-50mA Dimensions 103 x 44 x 21mm Weight Applox. 130g ** Optical input connector, electrical output connector is that of the standard model. ** Other types of connectors are available as a customer's option.

* Lens System Lens System of SPD-4 Maximum Acceptable Diameter = 0.5mm Maximum Acceptable NA = 0.25 Diameter of PD = 0.2mm Optical Magnification = 0.4 * Spectral Sensitivity (by Calculation) Spectral Sensitivity of SPD-4 Ref. Wavelength = 850nm Peak Sensitivity wavelength = Applox. 700nm Sensitivity in Dominant Wavelength : 158 V/W at 400nm 263 V/W at 500nm 391 V/W at 600nm 463 V/W at 700nm 383 V/W at 800nm 205 V/W at 900nm * Step Response & Frequency Characteristics (Examples) Step Response of SPD-4 Frequency Characteristics of SPD-4 Risetime = 142ps, Overshoot = 2.22% -3dB (Electrical) Frequency = Applox. 3.0GHz

SPA-2_650nm --- Contents --- SPA-2_650nm (Max Core = 1mm, Max NA = 0.5, 1,000V/W@658nm, DC to 1GHz) * O to E Top Page Features * Selection Guide * Outstanding Detection Area. * O to E for Visible Light Catch the optical power from POF （Max NA = 0.2, 0.25） of NA = 0.5, core diameter = 1.0mm SPD-1_650nm * High Sensitivity, 1,000V/W SPD-1_850nm * Wideband, from DC up to 1.0GHz SPD-2_650nm SPD-2_850nm * 103mm x 44mm x 21mm, 130 grams SPD-3 * Single DC powered from +12V to +18V SPD-4 * JPY 290,000 for direct sales (Excluded tax and shipping cost) * O to E for Visible Light (Max NA = 0.5) SPA-2_650nm has outstanding optical detection area (Max Core = 1.0mm, Max NA = 0.5), and 1.0GHz of conversion bandwidth. SPA-2_650nm is suitable for instrumentation of typical SPA-2_650nm POF optical communication system as well as MOST systems and IDB-1394 systems. SPA-3 * Specifications of SPA-2_650nm SPA-4 Model Name SPA-2_650nm * O to E for Visible Light （High Sensitivity Reference Wavelength 658nm Models） Wavelength Range 380 to 1,000nm SPS-1 Acceptable Maximum Core Diameter φ1.0mm Acceptable NA Range 0.5 or less SPS-2 Optical Input Connector FC receptacle * O to E for NIR Light Photodetector Type Si PIN PD LPD-1 Active diameter of Photodetector φ0.8mm Conversion Gain (658nm) 1,000V/W LPD-2 Output Saturation Optical Input Power (658nm) -1dBm LPS-1 Conversion Bandwidth DC to 1GHz Output Noise Level 1.9mVrms or less LPS-2 Noise Equivalent Optical Power (658nm) -27.3dBm or less * Frequency Electrical Output Connector BNC plug Caracteristics dependence on the Output Impedance 50 ohms wavelength Output Offset Voltage 0.5mV or less DC Power Connector LEMO 0S-4P * Options and Accesories Supply Voltage DC+15V * Contact Information Supply Current +150mA Dimensions 103 x 44 x 21mm Weight Applox. 130g ** Optical input connector, electrical output connector is that of the standard model. ** Other types of connectors are available as a customer's option. * Lens System

Lens System of SPA-2_650nm Maximum Acceptable Diameter = 1.0mm Maximum Acceptable NA = 0.5 Diameter of PD = 0.8mm Optical Magnification = 0.8 * Spectral Sensitivity (by Calculation) Spectral Sensitivity of SPA-2_650nm Ref. Wavelength = 658nm Peak Sensitivity wavelength = Applox. 820nm Sensitivity in Dominant Wavelength : 296 V/W at 400nm 535 V/W at 500nm 829 V/W at 600nm 1,090 V/W at 700nm 1,240 V/W at 800nm 1,063 V/W at 900nm * Step Response & Frequency Characteristics (Examples) Step Response of SPA-2_650nm Frequency Characteristics of SPA-2_650nm Risetime = 360ps, Overshoot = 2.87% -3dB (Electrical) Frequency = Applox. 1.0GHz

SPA-3 --- Contents --- SPA-3 (Max Core = 0.25mm, Max NA = 0.5, 500V/W@850nm, DC to 2GHz) * O to E Top Page * Selection Guide Features * For multi-wavelength instrumentation. * O to E for Visible Light Using a photodetector which does not （Max NA = 0.2, 0.25） have frequency characteristics dependency on the wavelength. SPD-1_650nm SPD-1_850nm * For large NA Fiber. Max NA = 0.5 SPD-2_650nm * High Sensitivity, 500V/W SPD-2_850nm * Wide Bandwidth, from DC up to 2.0GHz SPD-3 * 103mm x 44mm x 21mm, 130 grams SPD-4 * JPY 350,000 for direct sales * O to E for Visible Light (Excluded tax and shipping cost) (Max NA = 0.5) SPA-3 is a wide bandwidth O to E converter configured by a silicon PIN photodetector which does SPA-2_650nm not have "frequency characteristics dependency on the wavelength", Graviton's original lens system, and a TIA circuitry. The lens system incarnates large acceptable NA range up to 0.5. SPA-3 SPA-3 is suitable for instrumentation of fiber communication systems using high speed HPCF (Hard Polymer Clad Fiber). SPA-4 * O to E for Visible Light * Specifications of SPA-3 （High Sensitivity Models） Model Name SPA-3 SPS-1 Reference Wavelength 850nm Wavelength Range 380 to 950nm SPS-2 Acceptable Maximum Core Diameter φ0.25mm * O to E for NIR Light Acceptable NA Range 0.5 or less LPD-1 Optical Input Connector FC receptacle Photodetector Type Si PIN PD LPD-2 Active diameter of Photodetector φ0.2mm LPS-1 Conversion Gain (850nm) 500V/W Output Saturation Optical Input Power (850nm) -1dBm LPS-2 Conversion Bandwidth DC to 2GHz * Frequency Output Noise Level 1.5mVrms or less Caracteristics dependence on the Noise Equivalent Optical Power (850nm) -25.2dBm or less wavelength Electrical Output Connector BNC plug * Options and Accesories Output Impedance 50 ohms Output Offset Voltage 0.5mV or less * Contact Information DC Power Connector LEMO 0S-4P Supply Voltage DC±15V Supply Current +150mA/-50mA Dimensions 103 x 44 x 21mm Weight Applox. 130g ** Optical input connector, electrical output connector is that of the standard model.

** Other types of connectors are available as a customer's option. * Lens System Lens System of SPA-3 Maximum Acceptable Diameter = 0.25mm Maximum Acceptable NA = 0.5 Diameter of PD = 0.2mm Optical Magnification = 0.8 * Spectral Sensitivity (by Calculation) Spectral Sensitivity of SPA-3 Ref. Wavelength = 850nm Peak Sensitivity wavelength = Applox. 700nm Sensitivity in Dominant Wavelength : 264 V/W at 400nm 438 V/W at 500nm 652 V/W at 600nm 772 V/W at 700nm 639 V/W at 800nm 341 V/W at 900nm * Step Response & Frequency Characteristics (Examples) Step Response of SPA-3 Frequency Characteristics of SPA-3 Risetime = 185ps, Overshoot = 3.66% -3dB (Electrical) Frequency = Applox. 2.0GHz

SPA-4 --- Contents --- SPA-4 (Max Core = 0.25mm, Max NA = 0.5, 300V/W@850nm, DC to 3GHz) * O to E Top Page * Selection Guide Features * O to E for Visible Light * For multi-wavelength instrumentation. （Max NA = 0.2, 0.25） Using a photodetector which does not have frequency characteristics SPD-1_650nm dependency on the wavelength. SPD-1_850nm * For large NA HPCF. Max NA = 0.5 SPD-2_650nm SPD-2_850nm * Wide Bandwidth, from DC up to 3.0GHz * 103mm x 44mm x 21mm, 130 grams SPD-3 * JPY 410,000 for direct sales SPD-4 (Excluded tax and shipping cost) * O to E for Visible Light (Max NA = 0.5) SPA-4 is a wide bandwidth O to E converter configured by a silicon PIN photodetector which does not have "frequency characteristics dependency on the wavelength", Graviton's original lens SPA-2_650nm system, and a TIA circuitry. The lens system incarnates large acceptable NA range up to 0.5. SPA-4 is suitable for instrumentation of multi-wavelength optical pick up as well as fiber SPA-3 communication systems using high speed, large core HPCF (Hard Polymer Clad Fiber). SPA-4 * Specifications of SPA-4 * O to E for Visible Light （High Sensitivity Model Name SPA-4 Models） Reference Wavelength 850nm SPS-1 Wavelength Range 380 to 950nm SPS-2 Acceptable Maximum Core Diameter φ0.25mm Acceptable NA Range 0.5 or less * O to E for NIR Light Optical Input Connector FC receptacle LPD-1 Photodetector Type Si PIN PD Active diameter of Photodetector φ0.2mm LPD-2 Conversion Gain (850nm) 300V/W LPS-1 Output Saturation Optical Input Power (850nm) +1dBm LPS-2 Conversion Bandwidth DC to 3GHz Output Noise Level 1.8mVrms or less * Frequency Caracteristics Noise Equivalent Optical Power (850nm) -22.4dBm or less dependence on the Electrical Output Connector BNC plug wavelength Output Impedance 50 ohms * Options and Accesories Output Offset Voltage 0.5mV or less DC Power Connector LEMO 0S-4P * Contact Information Supply Voltage DC±15V Supply Current +150mA/-50mA Dimensions 103 x 44 x 21mm Weight Applox. 130g ** Optical input connector, electrical output connector is that of the standard model. ** Other types of connectors are available as a customer's option.

* Lens System Lens System of SPA-4 Maximum Acceptable Diameter = 0.25mm Maximum Acceptable NA = 0.5 Diameter of PD = 0.2mm Optical Magnification = 0.8 * Spectral Sensitivity (by Calculation) Spectral Sensitivity of SPA-4 Ref. Wavelength = 850nm Peak Sensitivity wavelength = Applox. 700nm Sensitivity in Dominant Wavelength : 158 V/W at 400nm 263 V/W at 500nm 391 V/W at 600nm 463 V/W at 700nm 383 V/W at 800nm 205 V/W at 900nm * Step Response & Frequency Characteristics (Examples) Step Response of SPA-4 Frequency Characteristics of SPA-4 Risetime = 139ps, Overshoot = 5.81% -3dB (Electrical) Frequency = Applox. 3.0GHz