Optical Isolator is a passive optical component that allows light to transmit in a certain direction while block light in the opposite direction. The working principle is based on the non-reciprocity of Faraday rotation. The light sources from back reflections and signals, which can cause instabilities and damage, can be well isolated by optical isolator through utilizing the Faraday effect of magneto-optical crystal. The Polarization Insensitive Isolator features low insertion loss, high isolation and excellent environmental stability and reliability. It is ideal for suppressing back reflection in fiber lasers and other high performance laser based fiber optics systems.

The polarization insensitive isolator are designed and manufactured to Telcordial standard. The unique manufacturing process and optical path epoxy-free design enhance the device's high power handling capability. The devices are characterized with high performance, high reliability and low cost. Polarization insensitive isolators have been widely used in EDFAs, Raman amplifiers, DWDM systems, Fiber lasers, transmitters and other fiber optic communication equipment to suppress back reflection and back scattering.

Feature

High Isolation

Low Insertion Loss

High Return Loss

Polarization Dependent Loss

Application

Optical Fiber Amplifier

Communication Systems

Telecommunications

Performance Specifications

Operating Wavelength (nm)	1310 or 1550		1480
Type	Single Stage	Dual Stage	Single Stage	Dual Stage
Typical Peak Isolation (dB)	≥40	≥58	≥40	≥58
Isolation (dB)	≥30	≥42	≥30	≥42
Typical Insertion Loss dB)	≤0.40	≤0.55	≤0.40	≤0.55
Insertion Loss (dB)	≤0.60	≤0.75	≤0.60	≤0.75
Return Loss（In/Out） (dB)	≥55/60
PDL (dB)	< 0.1
PMD (ps)	0.25(0.05 available upon request)
Bandwidth (nm)	±20
Operating Temperature (℃)	-10～80
Storage Temperature (℃)	-40～85
Max. Operating Power (mW)	500
Package Size (mm)	Φ3xL26(250um bare fiber)

Above specification are for device without connector

Order Information

Product	Wavelength	Fiber type	Pigtail Type	Fiber length	Connector
1-Single Stage 2-Dual Stage	1=1310nm 2=1550nm 3=1480nm	1-G652D 2-G657A 3-Other	A—Bare fiber B—900um loose tube C—900um tight tube D—2.0mm loose tube E—3.0mm loose tube	00—Other 05—0.5m 10—1m 15—1.5m 20—2 m	0—None 1—FC/PC 2—FC/APC 3—SC/PC 4—SC/APC 5—LC/PC 6—LC/APC 7—Other

Mini Polarization-Insensitive Isolator