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BPD570 APD Balanced Photodetector M Adjustable

APD's balanced photodetectors with a CMRR of 30db and very low noise are suitable for coherent detection applications.

Model：BPD570

Tags： BPD570 APD Balanced Photodetector

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Huang Email: Hqy@ybphotonics.com

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Product Info

Introduction

BPD570 Series Photodetectors Based on 2 high-performance APD photodetectors with consistent performance, adjustable M-factor, ultra-high common-mode rejection ratio of 30db and low noise.

1. Overview

The Avalanche Photodiode Balanced Detector is a balanced receiver that eliminates common mode noise by subtracting the two input signals. The balanced detector uses two matched avalanche photodiodes (APDs) and an ultra-low noise, ultra-low distortion, high-speed transimpedance amplifier ideal for low optical input power applications. Each APD is coupled through length-matched SMF-28e+ fiber optics at the FC/APC end to avoid optical range differences between the input and the active region of the photodiode. Unique to the BPD570, compared to other balanced detectors using silicon or Indium Gallium Arsenide (IGA) PIN photodiodes, is the extremely low NEP and optical gain control.

2.Features

Optical Gain Control
Low NEP
Excellent common mode rejection ratio
Low Noise

3. Application

OCT
DAS
outlier detection
Optical Delay Measurement

	BPD570A-10M	BPD570A-75M	BPD570A-200M	BPD570A-400M
materials	InGaAs APD
wavelength range	400-1100nm
input connector	FC/APC (internal 62.5/125 multimode fiber)
responsivity	0.6A/W @905nm
Common mode rejection ratio	>30dB
Bandwidth（a）	DC-10MHz	DC-75MHz	DC-200MHz	DC-400MHz
Rise time（a）	35ns	4.5ns	1.8ns	1ns
Transimpedance gain（b）	165kV/A
M-factor	75-150
Saturated optical power	270nw
Out-of-phase voltage （a）	±1mV
Noise voltage（a）	2mV RMS
NEP	0.07pW/√Hz

	BPD570C-10M	BPD570C-75M	BPD570C-200M	BPD570C-400M
materials	InGaAs APD
wavelength range	1000-1700nm
input connector	FC/APC (internal SMF28e+ fiber)
responsivity	0.9A/W @1550nm
Common mode rejection ratio	>35dB
Bandwidth（a）	DC-10MHz	DC-75MHz	DC-200MHz	DC-400MHz
Rise time（a）	36ns	4.5ns	1.8ns	1ns
Transimpedance gain（b）	1MV/A	165kV/A	30kV/A	3.3kV/A
M-factor				8-18
Saturated optical power	4.4uw	27uw	148uw	75uw
Out-of-phase voltage （a）				±1mV
Noise voltage（a）	9mV RMS	8mV RMS	4mV RMS	0.8mV RMS
NEP	2.6pW/√Hz	11.4pW/√Hz	32pW/√Hz	1.5pW/√Hz

FAQ

Q：Do you have an unboxing picture of the photodetector?

A：When you buy our photodetectors, we will deliver SMA to BNC RF cable, and power supply for free.
Q: What are the advantages of your photodetectors compared to Thorlabs?
A: We support custom development and we offer better prices.
Q: What is the lead time for photodetector modules?
A: Basically, we have more than 90% of detectors in stock, only a few models need 3 weeks lead time.
Q: Do you support the sale of those countries, and is the shipping included?
A: Our service is available worldwide, regardless of country or region. Shipping is included.
Q: Who are your typical customers?
A: More than 100 top universities and research institutes in China have chosen us and given us high evaluations, such as: Chinese Academy of Sciences, CEC, Tsinghua University, Peking University and other clients.