title: Multi-wavelength filters in silicon using superposition sidewall Bragg grating devices.
abstract: Multiple-filter stopbands, with the potential to be nonuniformly spaced in frequency, are realized in a single integrated Bragg grating device on silicon. By utilizing a superposition of sidewall relief grating functions, N individual filter responses can be fabricated with a device length N× shorter than the equivalent serial set of gratings. Arbitrary combinations of eight-basis filter responses were demonstrated as selected by an eight-bit pseudorandom number generator, showing the flexibility of the complex Bragg grating device design.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Strain
authors.forename: Stephen
authors.initials: S
authors.lastname: Thoms
authors.forename: Douglas S
authors.initials: DS
authors.lastname: MacIntyre
authors.forename: Marc
authors.initials: M
authors.lastname: Sorel