2000nm Single-Mode Fiber Reflector

IA fiber-optic total reflector is used in erbium-doped fiber amplifiers (EDFAs). In this application, a fiber-based back reflector is placed at the end of an erbium-doped fiber, reflecting light back into the fiber in the direction of the incident light. A circulator is used to direct both the input and amplified output signals along their respective optical paths. This setup allows the signal light to pass through the gain fiber twice, effectively enhancing the amplifier's gain absorption efficiency. Another practical application of back reflectors is the construction of tunable back reflectors, as shown in Figure 2. Feedback signals from a downstream back reflector can cause instability in certain devices, such as laser diodes. By incorporating a tunable back reflector, the sensitivity of a device to back reflection can be determined. A tunable attenuator enables users to introduce a controlled reflection into the system. By analyzing the effects of back reflection, users can calculate parameters such as noise level, bit error rate, and distortion.

Product features：Low temperature deviation、 High reflectivity、 Long-term reliability

Application area：Fiber Optic Current Sensor、 Fiber Optic Network Testing and Analysis、 Fiber Optic Sensing

Unit Price

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Part Number

FM-W20-SA

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General Parameters

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Dimensional Drawing

Figure 1. All-fiber amplifier using a retroreflector and a circulator

Parameters

Parameters	Unit	Value
Operating Wavelength (λc)	nm	980/1060/1310/1550/2000
Bandwidth	nm	±10
Typical Insertion Loss	dB	0.8
Maximum Insertion Loss	dB	1.0
Reflectivity	%	>99.5
Max. PDL at 23°C, λc	dB	0.2
Maximum Operating Power (CW)	mW	300
Maximum Tensile Load	N	5
Fiber Type		SMF-28e Fiber or Specify
Operating Temperature	℃	-5 to +70
Storage Temperature	℃	-40 to +85

Ordering info

FM-W□□□□-XX
W□□□□: Operating Wavelength
13: 1310nm
15: 1550nm
20: 2000nm

XX: Fiber and Connector Type
SN = SMF-28E Fiber + None
SA = SMF-28E Fiber + FC/APC
SP = SMF-28E Fiber + FC/PC
PP = PM Fiber + FC/PC
PA = PM Fiber + FC/APC

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