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Broadband silicon photonic directional coupler using asymmetric-waveguide based phase control

Publication Type:

Journal Article

Source:

Opt. Express, OSA, Volume 23, Issue 3, p.3795--3808 (2015)

URL:

http://www.opticsexpress.org/abstract.cfm?URI=oe-23-3-3795

Keywords:

Integrated optics devices; Waveguides

Abstract:

We design and demonstrate broadband directional couplers that use asymmetric-waveguide based phase control sections, on the silicon-on-insulator platform. Broadband directional couplers with various power splitting ratios, including 10%/90%, 20%/80%, 30%/70%, 40%/60% and 50%/50%, were realized for both transverse electric (TE) and transverse magnetic (TM) modes. Some of the devices exhitbit bandwidths in excess of 100 nm, and all in excess of 75 nm. The footprints of the TE mode couplers are 32 μm ×1.3 μm, or less, and those of the TM mode couplers are 13 μm ×1.3 μm, or less.

Faculty Member(s): 
Lukas.Chrostowski
Faculty Member(s): 
Nicolas.Jaeger
Research Area(s): 
Photonics and Optics