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Dual Port APD Receiver Module For Raman DTS

The dual-channel APD photoreceiver module, using InGaAs APD photodiodes, is customized for the DTS Raman temperature measurement system and is used to receive Anti-Stokes and Stokes Raman optical signals.

Model：DTS-APD

Tags： Dual Port APD DTS APD InGaAs APD APD Receiver Module DTS APD

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Huang Email: Hqy@ybphotonics.com

WhatsApp： +8613427781756 Web | App

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Product Info

Introduction

The APD modules are based on low-noise avalanche photodiodes made of InGaAs with a built-in pre-amplifier and high voltage supply.A temperature compensation function allows the APD to be operated at constant gain across a wide operating temperature range.

1. Overview

APD-DTS is a dual avalanche photodetector for distributed fiber optic temperature measurement. It is internally based on low noise amplifiers, boost circuits, and temperature compensation circuits, featuring high gain and fast response. The module is powered by a single power supply for easy integration, and the outputs use SMA connectors to reduce size and maximize frequency response, with a maximum bandwidth of 200MHz.

2. Features

Covering wavelength range 1000-1700nm
DTS-specific, dual-channel
M-factor temperature compensation
Connects to singlemode (SM) or multimode (MM) fibers
FC fiber input header
Supports customization

3. Applications

Distributed Fiber Optic Temperature
Measurement System DTS
OTDR

4.Specifications

Items	DTS-APD-150M
Materials	InGaAs
Wavelength	1000-1700nm
Input connector	Multimode fiber with FC/APC connectors
Responsivity @M=1	0.9A/W @1550nm
Bandwidth（b）	DC-150MHz
Rise time（b）	2.5ns
Gain（a）	3.2x107V/W
Saturated Optical power	108nw
NEP	0.28pW/√Hz
Maximum output amplitude（a）	4V
Operating voltage	9-12V
Operating Current	<500mA
Output Impedance	50Ω
Output coupling mode	DC
Output connector	SMA female
Operating temperature	-10~65℃
Storage temperature	-40~85℃

Remarks:
a For high resistance loads
b For 50Ω loads

5. Mechanical dimensions

6. Response curve

Note: Response curves are typical values for reference only.

7. Shipping list

Item	Name of material	num	unit	note
1	photodetector	1	pcs
2	SMA to BNC RF Cable	2	pcs
3	power adapter	1	pcs	9v，With an adapter cable

Recommended Module Products for DTS Systems

Product Name	Model	Description
Pulsed Laser 1550nm 30W Peak Power For DTS	DTS-LASER-1550-30	1550nm, pulsed laser, maximum power peak: 30W
Dual Port Raman DTS InGaAS APD Receiver Module	DTS-APD	Multiple bandwidth options, dual ports, built-in temperature compensation
100/200M DTS dedicated data acquisition card	GY-DTS-X	The GY-DTS-X is a special DAQ card for DTS system，With 100/200/250MSps sampling rate. It adopts 100Mbps network port for data transmission

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.