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4×4 Optical Switch with Polarization Selective Elements

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5 Author(s)
Jiun-shiou Deng ; Department of Electronic Engineering, Ming-Hsin University of Science and Technology, 1, Hsin-Shing Rd., Hsin-Feng, Hsin-Chu, Taiwan, 304. ; Chi-ping Lee ; Ming-feng Lu ; Meng-fu Lin
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The basic optical switch in optical interconnection networks is a 2×2 optical switch which provides two switching states: the "straight" state and the "swap" state. Several kinds of optical switch have been presented such as polarization selective elements combined with electro-optic halfwave plates. Using these basic optical switches to construct a 4×4 nonblocking interconnection network, such as Benes network and double-layer network, needs three stages of optical switches. In this presentation, a 4×4 optical switch with polarization selective elements and electro-optic halfwave plates will be proposed. In this switch, the control configurations of electro-optic halfwave plates have been changed to support all switching states of polarization selective elements. Compared with 4×4 nonblocking interconnection networks, this 4×4 optical switch has the lowest system insertion loss and the fewest required components. Its structure and connection path for different switching functions will be discussed in detail.

Published in:

2006 14th IEEE International Conference on Networks  (Volume:2 )

Date of Conference:

Sept. 2006