Abstract

A cost-effective yet robust and versatile dual-channel spectral comparator is presented. The silica-on-silicon planar-waveguide integrated device includes two holographic Bragg-grating reflectors (HBRs) with complementary spectral transfer functions. Output comprises projections of input signal spectra onto the complementary spectral channels. Spectral comparators may be useful in optical code-division multiplexing, optical packet decoding, spectral target recognition, and the identification of molecular spectra. HBRs may be considered to be mode-specific photonic crystals.

© 2004 Optical Society of America

Effective gray scale in lithographically scribed planar holographic Bragg reflectors

Dmitri Iazikov, Christoph Greiner, and Thomas W. Mossberg
Appl. Opt. 43(5) 1149-1155 (2004)

Wavelength division multiplexing based on apodized planar holographic Bragg reflectors

Christoph M. Greiner, Dmitri Iazikov, and Thomas W. Mossberg
Appl. Opt. 43(23) 4575-4583 (2004)

Interferometric amplitude apodization of integrated gratings

T. W. Mossberg, C. Greiner, and D. Iazikov
Opt. Express 13(7) 2419-2426 (2005)

Bandpass engineering of lithographically scribed channel-waveguide Bragg gratings

Christoph Greiner, Thomas W. Mossberg, and Dmitri Iazikov
Opt. Lett. 29(8) 806-808 (2004)

Low-loss silica-on-silicon two-dimensional Fabry–Perot cavity based on holographic Bragg reflectors

Christoph M. Greiner, Dmitri Iazikov, and Thomas W. Mossberg
Opt. Lett. 30(1) 38-40 (2005)