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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 16 — Aug. 11, 2014
  • pp: 19513–19522

Channel-spacing tunable silicon comb filter using two linearly chirped Bragg gratings

Zhi Zou, Linjie Zhou, Xinwan Li, and Jianping Chen  »View Author Affiliations

Optics Express, Vol. 22, Issue 16, pp. 19513-19522 (2014)

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We propose a novel silicon-based comb filter with tunable channel spacing using a Michelson interferometer consisting of a pair of apodized linearly chirped Bragg gratings (ALC-BGs). The channel spacing of the proposed comb filter can be continuously tuned with a large tuning range by changing the effective refractive index of one of the ALC-BGs through the thermo-optic effect. Our numerical calculation shows that the channel spacing can be continuously tuned form 8.21 nm to 0.19 nm with an out-of-band rejection ratio of greater than 30 dB.

© 2014 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(130.7408) Integrated optics : Wavelength filtering devices
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:

Original Manuscript: June 3, 2014
Revised Manuscript: July 24, 2014
Manuscript Accepted: July 24, 2014
Published: August 5, 2014

Zhi Zou, Linjie Zhou, Xinwan Li, and Jianping Chen, "Channel-spacing tunable silicon comb filter using two linearly chirped Bragg gratings," Opt. Express 22, 19513-19522 (2014)

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