High Speed and Low Noise Balance Photo Detector

Description

High speed and low noise balance photo detector consists of two matched ultra-low noise analog photodiodes, a low noise broadband transimpedance amplifier and ultra low noise power supply. Due to high gain, high sensitivity, high bandwidth, low noise, and high common mode rejection ratio, the high speed and low noise balance photo detector can effectively reduce the common mode noise, and improve the signal-to-noise ratio of the system.

Feature

  • Low Noise (10mVpp Typical )
  • High Bandwidth DC~350MHz
  • High Transimpedance Gain 30KV/A
  • Compact Structure 80*80*30mm
  • Customizable Products

Applications

  • Distributed Optical Fiber Sensing
  • Doppler Wind Lidar
  • OCT
  • Spectrum Measurement
  • Ns-level Optical Pulse Detection

Item#

WBD-100M-A

WBD-350M-A

WBD-1000M-A

Unit

Detector Type

InGaAs

Operating Wavelength

1100~1700

1100~1700

1100~1700

nm

Bandwidth

DC~100

DC~350

1000

MHz

Typical Max Responsivity

0.95@1550nm

0.95@1550nm

0.95@1550nm

A/W

Transimpedance Gain

60K(30K)

30K(60K)

30K

V/A

Max. Input Power

100

150

300

uW

NEP

5

5

9

pW/Sqrt(Hz)

Output Impedance

50

50

50

Ω

CMRR

>25

>25

>25

dB

Output Voltage Noise

10 (Typical)

10 (Typical)

25 (Typical)

mVpp

Output Coupling Mode

DC/AC

DC/AC

AC


Power Supply Voltage

5

5

5

V

Power Supply Current

0.5(max)

0.5(max)

0.5(max)

A

Optical Inputs

FC/APC

FC/APC

FC/APC


Electrical Outputs

SMA

SMA

SMA



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