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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 20 — Oct. 15, 2013
  • pp: 4002–4004

Uniformly spaced λ/4-shifted Bragg grating array with wafer-scale CMOS-compatible process

Jie Sun, Purnawirman, Ehsan Shah Hosseini, Jonathan D. B. Bradley, Thomas N. Adam, Gerald Leake, Douglas Coolbaugh, and Michael R. Watts  »View Author Affiliations


Optics Letters, Vol. 38, Issue 20, pp. 4002-4004 (2013)
http://dx.doi.org/10.1364/OL.38.004002


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Abstract

We report on an integrated λ/4-shifted Bragg grating array using a wafer-scale complementary metal-oxide semiconductor (CMOS) compatible process with silicon–nitride waveguides. A sidewall grating was used to simplify the fabrication process, and a sampled Bragg grating with equivalent phase-shift structure was employed to achieve an accurate λ/4 phase shift. A four-channel λ/4-shifted Bragg grating array with highly uniform channel spacing was demonstrated with a measured channel spacing variation below 10 pm (1.25 GHz). The high channel-spacing uniformity and the CMOS-compatibility of the demonstrated device hold promise for integrated distributed feedback laser arrays for various silicon photonic applications.

© 2013 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(050.5080) Diffraction and gratings : Phase shift
(130.3120) Integrated optics : Integrated optics devices

ToC Category:
Diffraction and Gratings

History
Original Manuscript: August 28, 2013
Manuscript Accepted: September 6, 2013
Published: October 3, 2013

Citation
Jie Sun, Purnawirman, Ehsan Shah Hosseini, Jonathan D. B. Bradley, Thomas N. Adam, Gerald Leake, Douglas Coolbaugh, and Michael R. Watts, "Uniformly spaced λ/4-shifted Bragg grating array with wafer-scale CMOS-compatible process," Opt. Lett. 38, 4002-4004 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-20-4002

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