Open AccessLow‐Loss Compact Arrayed Waveguide Grating with Spot‐Size Converter Fabricated by a Shadow‐Mask Etching Technique
Author(s) -
Jeong Geon,
Kim Donghoon,
Choi Junseok,
Lee Donghwan,
Park MahnYong,
Kim JinBong,
Lee Hyung Jong,
Lee HyunYong
Publication year - 2005
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.05.0104.0029
Subject(s) - arrayed waveguide grating , shadow mask , materials science , optics , coupling loss , waveguide , grating , etching (microfabrication) , insertion loss , shadow (psychology) , optoelectronics , channel (broadcasting) , wavelength division multiplexing , optical fiber , layer (electronics) , physics , telecommunications , engineering , wavelength , nanotechnology , psychology , psychotherapist
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.