10mm Large active diameter Ge Photodiode-Ideal-Photonics Inc

10mm Large active diameter Ge Photodiode

Overview
Features
Specifications
Application
Related products

Ideal-Photonics' 10X10 photodiode is ideal for measuring both pulsed and CW fiber light sources by converting optical power into electrical current. The detector is ceramic with an anode and cathode.

The photodiode anode produces a current, which is a function of the incident light power and the wavelength. The responsivity, Ը(λ), can be read from the plot on the following page to estimate the amount of photocurrent. This can be converted to a voltage by placing a load resistor (RL) from the photodiode anode to the circuit ground. Where P is the power, the output voltage is expressed by

The bandwidth, fBW, and the rise time response, tR, are determined from the diode capacitance, CJ,

and the load resistance, RL, as shown below. The diode capacitance can be lowered by placing a bias voltage from the photodiode cathode to the circuit ground.

	Picture	Name	Part NO./Stock NO.	Description	Response wavelngth	Material	package	Lead Time	Price	Operation
		5mm Ge Photodiode	GE-5X5-TO8	Response wavelngth 800~1800nm, Material Ge, Active area 25 mm2, TO8 Package	800-1800nm	Ge	TO-8	in stock	$260.00
		10mm Ge Photodiode	GE-10X10-TO9	Response wavelngth 800~1800nm, Material Ge, Active area 100 mm2, TO9 Package	800-1800nm	Ge	TO-9	in stock	$450.00

Features

● Large active area (10mm)

● Low PDL

Specifications

Part Number	GE10X10-TO9
Key Feature	Largest Active Area
Sensor Material	Ge
Wavelength Range	800 - 1800 nm
Active Area	100 mm2 (10 mm x 10 mm)
Rise/Fall Timeb	10 μs (Typ.) @ 1 V
NEP	4.0 x 10-12 W/Hz1/2 @ 1550 nmc
Dark Current	50 µA (Max) @ 0.3 V
Junction Capacitance	80 nF (Typ.) @ 1 V 135 nF (Typ.) @ 0 V
Shunt Resistance	2 kΩ (Min)
Package	TO9 Package

Spectral Response

The responsivity of a photodiode is a measure of its sensitivity to light and is defined as the ratio of the photocurrent IP to the incident light power P at a given wavelength:

In other words, it is a measure of the effectiveness of the conversion of light power into electrical current. Responsivity varies from lot to lot and with the wavelength of the incident light, applied reverse bias, and temperature. It increases slightly with applied reverse bias due to improved charge collection efficiency in the photodiode. An increase or decrease in the temperature changes the width of the band gap, which will vary inversely with the temperature change.

Recommended Circuit

Diameter

Application

● Power meter

● Fiber Sensor