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arXiv · 0804.2135

Sagnac-loop phase shifter with polarization-independent operation

Tien Tjuen Ng·Darwin Gosal·Antia Lamas-Linares·Christian Kurtsiefer
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Abstract

A bulk-optics, polarization-independent phase shifter for photonic quantum information applications is demonstrated. A transverse mode electro-optic modulator using lithium niobate is placed in a Sagnac-like loop containing Faraday rotators. This direction-dependent polarization rotation in the loop is combined with a Mach-Zehnder interferometer to form an optical switch with an on/off contrast of 96% and a switching time of 1.6 ns.

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Tien Tjuen Ng, Darwin Gosal, Antia Lamas-Linares, Christian Kurtsiefer. 2008-04-14. Sagnac-loop phase shifter with polarization-independent operation. https://doi.org/10.1063/1.3514984

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