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Browse Journals & Magazines > Photonics Technology Letters, ...> Volume:20 Issue:8 Help

A Polarization-Independent Subnanosecond 2 ,\times, 2 Multicast-Capable Optical Switch Using a Sagnac Interferometer

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6 Author(s)
Lilin Yi ; Shanghai Jiao Tong Univ., Shanghai ; Weisheng Hu ; Yi Dong ; Yaohui Jin
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We design and demonstrate a cost-effective 2times2 ultrafast multicast-capable optical switch (MCOS) based on a Sagnac interferometer. The Sagnac interferometer is composed of a LiNbO3 phase modulator (PM) with two polarization-maintaining pigtail fibers and a 3-dB polarization-maintaining coupler. The MCOS works at three states: cross, bar, and multicast, in the entire C-band (1525-1565 nm) by controlling the driven voltage of the PM. Polarization- dependence is eliminated by splicing the pigtail fibers of the PM and the 3-dB coupler with 0degand 90deg angles, respectively. The measured switching time is ~0.6 ns. Multiple 2times2 MCOS elements can be constructed into a large nonblocking N x N MCOS matrix.

Published in:
Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 8 )

Date of Publication: April15, 2008

Page(s):
539 - 541
ISSN :
1041-1135
INSPEC Accession Number:
9920536
Digital Object Identifier :
10.1109/LPT.2008.918236
Product Type:
Journals & Magazines
Date of Current Version :
14 March 2008
Issue Date :
April15, 2008
Sponsored by :
IEEE Photonics Society

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