Ultra-small footprint silica-on-silicon WDM based on holographic Bragg reflectors

Dmitri Iazikov; Christoph Greiner; Thomas W. Mossberg

doi:10.1117/12.529695

18 June 2004 Ultra-small footprint silica-on-silicon WDM based on holographic Bragg reflectors

Dmitri Iazikov, Christoph Greiner, Thomas W. Mossberg

Proceedings Volume 5349, Physics and Simulation of Optoelectronic Devices XII; (2004) https://doi.org/10.1117/12.529695
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

Abstract

We report on wavelength-division-multiplexing (WDM) based on lithographically-fabricated slab-waveguide-contained planar holographic Bragg reflectors (HBRs). Partial HBR diffractive contour writing and contour displacement are successfully demonstrated to enable precise bandpass engineering of multiplexer transfer functions and make possible compact-footprint devices based on hologram overlay. Four and eight channel multiplexers with channel spacings of ~50 and ~100 GHz, improved sidelobe suppression and flat-top passbands are demonstrated. When a second-order apodization effect, comprising effective waveguide refractive index variation with written contour fraction, and the impact of hologram overlap on the hologram reflective amplitude are included in the simulation, excellent agreement between predicted and observed spectral passband profiles is obtained. With demonstrated simulation capability, the ability to fabricate general desired passband profiles becomes tractable.

Citation Download Citation

Dmitri Iazikov, Christoph Greiner, and Thomas W. Mossberg "Ultra-small footprint silica-on-silicon WDM based on holographic Bragg reflectors", Proc. SPIE 5349, Physics and Simulation of Optoelectronic Devices XII, (18 June 2004); https://doi.org/10.1117/12.529695

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