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Design and characterization of microring reflectors with a waveguide crossing

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Abstract

We present a novel design of a wavelength-selective reflector using a microring resonator integrated with a low-loss, low-crosstalk waveguide crossing. Functioning as a reflective notch filter, it can be used for optical communications and for sensor applications. The device is simulated using the transfer-matrix method combined with a two- dimensional finite-difference mode solver and is fabricated by a CMOS-compatible silicon-on-insulator technology. The measurement shows an extinction ratio greater than 25dB and a resonance-wavelength temperature dependence of 0.09nm/K.

© 2010 Optical Society of America

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