A Wavelength Selective Bidirectional Isolator

A wavelength selective optical isolator is proposed. Being different from conventional isolators, a well-designed wave plate is employed and works together with the Faraday rotator. Different wavelengths thus experiences different phase retardation so that wavelength-dependant polarization states ar...

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Bibliographic Details
Main Authors: Xi-kui Hu, Zhang-di Huang, Su-shan Li, Fei Xu, Yan-qing Lu
Format: Conference Proceeding
Language:English
Subjects:
Birefringence
Isolators
Magnetic analysis
Optical fiber communication
Optical fiber networks
Optical fiber polarization
Optical polarization
Optical propagation
Optical retarders
Passive optical networks
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Description
Summary:A wavelength selective optical isolator is proposed. Being different from conventional isolators, a well-designed wave plate is employed and works together with the Faraday rotator. Different wavelengths thus experiences different phase retardation so that wavelength-dependant polarization states are obtained for bidirectional beams. A (1.49 μm, 1.31 μm) wavelength selective isolator is demonstrated, which means 1.49 μm light only may propagate along one-direction why the opposite wave is only for 1.31 μm light. Over 60 dB optical isolation is obtained, which has promising applications in access optical networks.
ISSN:2156-8464
2156-8480
DOI:10.1109/SOPO.2010.5504124