Journal
OPTICS EXPRESS
Volume 21, Issue 1, Pages 1310-1316Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.001310
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- AFOSR STTR
- Mentor Graphics and Lumerical
- DARPA E-PHI
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We designed a compact, low-loss and wavelength insensitive Y-junction for submicron silicon waveguide using finite difference time-domain (FDTD) simulation and particle swarm optimization (PSO), and fabricated the device in a 248 nm complementary metal-oxide-semiconductor (CMOS) compatible process. Measured average insertion loss is 0.28 +/- 0.02 dB, uniform across an 8-inch wafer. The device footprint is less than 1.2 mu m x 2 mu m, an order of magnitude smaller than typical multimode interferometers (MMIs) and directional couplers. (C)2013 Optical Society of America
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