Abstract

A 1×2 hollow multimode interference (MMI) coupler based on semiconductor hollow waveguides formed from omnidirectional reflectors (SHOW-ODR) is demonstrated. The device has a shorter coupling length than a conventional silicon-on-insulator MMI coupler. A 2dB uniformity was achieved at operating wavelengths between 1520 and 1562nm. The device exhibited a weak polarization dependence in the TE and TM modes.

© 2007 Optical Society of America

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