Product Info.

O/E Converter

*O/E Converter : SPA-3
(Max Core = 0.25mm, Max NA = 0.5, 500V/W@850nm, DC to 2GHz)

* Suitable for multiple wavelength
* A silicon PIN Photodiode of which frequency characteristics does not depend on wavelength
* Maximum NA: 0.5 * Wide range of receivable wavelength: 380nm to 950nm
* Wide range of Convertible Frequency Bandwidth: DC to 2.0GHz
* High Sensitivity : 500V/W
* Low output offset voltage: 0.5mV or less
* Compact: 103mm x 44mm x 21mm
* Lightweight: 130g
* Equips a silicon PIN Photodiode configured with unique lens system
* Reasonable price:JPY 350,000 for direct sales
 (Excluded tax and shipping cost)

[1] Specifications
[2] Lens system
[3] Spectral Sensitivity (by calculation)
[4] Step Response and Frequency Characteristics (Example)
[5] Responding characteristics of the PD in a range of convertible frequency bandwidth
[6] options

[2] Lens System


Maximum Acceptable Diameter = 0.25mm
Maximum Acceptable NA = 0.5
Diameter of PD = 0.2mm
Optical Magnification = 0.8

[3] Spectral Sensitivity (by calculation)


Reference wavelength: 850nm

Maximum sensitivity: at 700nm

Sensitivities vs wavelength

Sensitivity Wavelength
264 V/W 400nm
438 V/W 500nm
652 V/W 600nm
772 V/W 700nm
639 V/W 800nm
341 V/W 900nm

[4] Step Response and Frequency Characteristics (Example)


Receivable Wavelength Range Reference Wavelength
Step Response of SPA-3
Rise time: 185ps, Overshoot : 9.73%
Frequency Characteristics of SPA-3
-3dB (Electrical) Frequency : Approx. 2.0GHz

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