NDLI: Design and Application of Compact and Highly Tolerant Polarization-Independent Waveguides

Content Provider	IEEE Xplore Digital Library
Author	Worhoff, K. Roeloffzen, C.G.H. de Ridder, R.M. Driessen, A. Lambeck, P.V.
Copyright Year	1983
Abstract	In this paper, the design, fabrication, and application of a highly tolerant polarization-independent optical-waveguide structure suited for operation in the third communication window is presented. The waveguide structure has been optimized toward minimized sensitivity to technological tolerances and low fabrication complexity. The tolerance analysis has been based on the typical processing tolerances of the widely applied silicon-oxynitride technology, being plusmn3times10 ^-4 in refractive index, plusmn1% in thickness, and plusmn0.1 mum in channel width. The optimized waveguide design fulfills the criterion of a channel birefringence within 5times10^-5, including processing tolerance. It also enables a fiber-to-chip coupling loss below 1 dB/facet and is suited for the realization of low-loss bends with a radius down to 600 mum. Based on this waveguide design, a passband-flattened optical wavelength filter with 50-GHz free spectral range has been realized and tested. The measured TE-TM shift of 0.03 nm confirms the polarization dependence of the optical waveguides being as low as 3times10^-5
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1276
Ending Page	1283
Page Count	8
File Size	598616
File Format	PDF
ISSN	07338724
Volume Number	25
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical waveguides Optical polarization Optical filters Optical refraction Optical sensors Optical variables control Optical design Optical device fabrication Tolerance analysis Refractive index tolerance analysis Adiabatic bend optical filter polarization-independent waveguide (PIW) silicon oxynitride
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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