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Optical Engineering

Study for optical implementation of SW-banyan network by using polarization control technology
Author(s): Junbo Yang; Xianyu Su; Ping Xu
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Paper Abstract

An SW-banyan network can play an important role in an optical interconnection network. A smart and compact SW-banyan network with a 2×2 node switch is proposed that uses polarizing beamsplitters (PBSs), phase spatial light modulators (PSLMs), and mirrors. PBS features include an s-component (perpendicular to the incident plane) of the incident light beam that is reflected, and a p-component (parallel to the incident plane) that passes through it. According to switching logic, under the control of external electrical signals, a PSLM controls the routing paths of the signal beams, i.e., the polarization of each optical signal is rotated or not rotated 90 deg by a programmable PSLM. Since the proposed optical setup consists of only optical polarization elements, it is compact in structure and possesses a low energy loss, a high signal-to-noise ratio, and a large number of available optical channels. Finally, the discussions and experimental results show that the SW-banyan network proposed here may be used in optical communication and optical information processing.

Paper Details

Date Published: 1 March 2008
PDF: 7 pages
Opt. Eng. 47(3) 035401 doi: 10.1117/1.2897286
Published in: Optical Engineering Volume 47, Issue 3
Show Author Affiliations
Junbo Yang, National Univ. of Defense Technology (China)
Xianyu Su, Sichuan Univ. (China)
Ping Xu, Shenzhen Univ. (China)


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