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High-isolation polarization-independent optical quasi-circulator with a simple structure.

作者信息

Wang L D

出版信息

Opt Lett. 1998 Apr 1;23(7):549-51. doi: 10.1364/ol.23.000549.

DOI:10.1364/ol.23.000549
PMID:18084573
Abstract

A high-isolation polarization-independent optical quasi-circulator with a simple structure is proposed. A Porro prism is employed in this kind of device for what is believed to be the first time. Because a Porro prism is used, light beams pass back and forth through the main elements in the device. Thus the number of elements used in the device is decreased, and the device structure is simplified. A four-port quasi-circulator with monomode fibers was assembled and tested at the 1.55-microm wavelength. Its insertion loss, isolation, and return loss are ?1.63 , ?60 , and ?55.6 dB , respectively.

摘要

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