Low‐Loss Compact Arrayed Waveguide Grating with Spot‐Size Converter Fabricated by a Shadow‐Mask Etching Technique

This paper describes a low‐loss, compact, 40‐channel arrayed waveguide grating (AWG) which utilizes a monolithically integrated spot‐size converter (SSC) for lowering the coupling loss between silica waveguides and standard single‐mode fibers. The SSC is a simple waveguide structure that is tapered...

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Bibliographic Details
Published in:ETRI journal 2005-02, Vol.27 (1), p.89-94
Main Authors: Jeong, Geon, Kim, Donghoon, Choi, Junseok, Lee, Donghwan, Park, Mahn‐Yong, Kim, Jin‐Bong, Lee, Hyung Jong, Lee, Hyun‐Yong
Format: Article
Language:English
Subjects:
Arrayed waveguide grating (AWG)
monolithic integration
optical planar waveguide
shadow‐mask etching
spot‐size converter
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Summary:This paper describes a low‐loss, compact, 40‐channel arrayed waveguide grating (AWG) which utilizes a monolithically integrated spot‐size converter (SSC) for lowering the coupling loss between silica waveguides and standard single‐mode fibers. The SSC is a simple waveguide structure that is tapered in both the vertical and horizontal directions. The vertically tapered structure was realized using a shadow‐mask etching technique. By employing this technique, the fabricated, 40‐channel, 100 GHz‐spaced AWG with silica waveguides of 1.5% relative index‐contrast showed an insertion‐loss figure of 2.8 dB without degrading other optical performance.
ISSN:1225-6463
2233-7326
DOI:10.4218/etrij.05.0104.0029