title: Integrated shadow mask for sampled Bragg gratings in chalcogenide (As(2)S(3)) planar waveguides.
abstract: We have developed a new approach for producing high performance sampled Bragg gratings in planar waveguides as a platform for WDM on-chip signal processing in a compact integrated device. Using this method we have successfully integrated a shadow mask directly onto a chalcogenide (As(2)S(3)) waveguide using standard semiconductor processing, eliminating misalignment errors between the mask and waveguide that otherwise occur. Through this integrated mask we demonstrate a very low duty cycle sampled Bragg grating with very narrow rejection peaks and spanning a very broad bandwidth.
authors: Duk-Yong
authors: DY
authors: Choi
authors: Steve
authors: S
authors: Madden
authors: Andrei
authors: A
authors: Rode
authors: Rongping
authors: R
authors: Wang
authors: Barry
authors: B
authors: Luther-Davies
authors: Neil J
authors: NJ
authors: Baker
authors: Benjamin J
authors: BJ
authors: Eggleton