Open AccessA high-resolution silicon-on-insulator arrayed waveguide grating microspectrometer with sub-micrometer aperture waveguides
Author(s) -
Pavel Cheben,
Jens H. Schmid,
A. Delâge,
A. Densmore,
Siegfried Janz,
B. Lamontagne,
J. Lapointe,
E. Post,
P. Waldron,
Dan Xu
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.002299
Subject(s) - optics , arrayed waveguide grating , silicon on insulator , materials science , channel spacing , grating , wavelength , waveguide , diffraction grating , silicon , bandwidth (computing) , optoelectronics , wavelength division multiplexing , physics , telecommunications , computer science
We demonstrate a 50-channel high-resolution arrayed waveguide grating microspectrometer with a 0.2 nm channel spacing on a silicon-on-insulator (SOI) platform. The chip size is 8 mm x 8 mm. High channel density and spectral resolution are achieved using high aspect ratio 0.6 mum x 1.5 mum waveguide apertures to inject the light into the input combiner and to intercept different spectral channels at the output combiner focal region. The measured crosstalk is <-10 dB, the 3 dB channel bandwidth is 0.15 nm, and the insertion loss is -17 dB near the central wavelength of lambda = 1.545 mum.