NDLI: Silica-based 8/spl times/8 optical matrix switch integrating new switching units with large fabrication tolerance

Content Provider	IEEE Xplore Digital Library
Author	Okuno, M. Kato, K. Nagase, R. Himeno, A. Ohmori, Y. Kawachi, M.
Copyright Year	1983
Abstract	An 8/spl times/8 optical matrix switch consisting of asymmetric Mach-Zehnder (MZ) interferometer switching units with a waveguide intersection was fabricated using silica-based planar lightwave circuits (PLC's) on a silicon substrate. This switching unit can realize a high extinction ratio and a wide operation wavelength range even if the coupling ratios of the directional couplers (DC's) consisting the switching unit, deviate greatly from the ideal value of 50%. A matrix switch with a DC-coupling ratio of 30% was fabricated to test the validity of the proposed geometry. The average insertion loss was 7.3 dB in the transverse electric (TE) mode and 7.5 dB in the transverse magnetic (TM) mode. The average extinction ratio was 31.2 dB in the TE mode and 31.3 dB in the TM mode. The wavelength range with an extinction ratio greater than 20 dB was over 100 nm.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	771
Ending Page	781
Page Count	11
File Size	376195
File Format	PDF
ISSN	07338724
Volume Number	17
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Integrated optics Optical switches Optical interferometry Transmission line matrix methods Extinction ratio Switching circuits Tellurium Optical waveguides Optical planar waveguides Planar waveguides
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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