Abstract

We present a novel device, an arrayed waveguide Sagnac interferometer, that combines the flexibility of arrayed waveguides and the wide application range of fiber or integrated optics Sagnac loops. We form the device by closing an array of wavelength-selective light paths provided by two arrayed waveguides with a single $2\times 2$ coupler in a Sagnac configuration. The equations that describe the device’s operation in general conditions are derived. A preliminary experimental demonstration is provided of a fiber prototype in passive operation that shows good agreement with the expected theoretical performance. Potential applications of the device in nonlinear operation are outlined and discussed.

© 2003 Optical Society of America

Nonreciprocity of counterpropagating signals in a monolithically integrated Sagnac interferometer

Venon M. Menon, Wilson Tong, Fengnian Xia, Chianqiang Li, and Stephen R. Forrest
Opt. Lett. 29(5) 513-515 (2004)

All-optical wavelength and pulse-width conversions with a Sagnac interferometer semiconductor–based switch

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Balanced heterodyne signal extraction in a postmodulated Sagnac interferometer at low frequency

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Measurement of the chromatic dispersion of an optical fiber by use of a Sagnac interferometer employing asymmetric modulation

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Opt. Lett. 25(5) 299-301 (2000)

All-optical switching in quadratically nonlinear waveguide arrays

Thomas Pertsch, Ulf Peschel, and Falk Lederer
Opt. Lett. 28(2) 102-104 (2003)