Abstract
The wavelength dependence of the nonreciprocal phase shift (NPS) in a magneto-optical (MO) wave- guide is investigated from the aspect of the geometrical structure. In an MO nonreciprocal waveguide, the effect of the waveguide dispersion on the NPS is being demonstrated to compensate the dispersion of the Faraday rotation coefficients. By accurately controlling the structure parameter of the MO waveguide, the wavelength- insensitive NPS can be obtained. According to this principle, we proposed the dual-wavelength nonreciprocal phase shifter at the wavelengths of 1.31 and 1.55 μm. © 2014 Society of Photo-Optical Instrumentation Engineers (SPIE) (DOI: 10 .1117/1.OE.53.11.117112)
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