Sagnac-loop phase shifter with polarization-independent operation.

@article{Ng2011SagnacloopPS,
  title={Sagnac-loop phase shifter with polarization-independent operation.},
  author={Tien Tjuen Ng and D. Gosal and A. Lamas-Linares and C. Kurtsiefer},
  journal={The Review of scientific instruments},
  year={2011},
  volume={82 1},
  pages={
          013106
        }
}
A bulk-optics, polarization-independent phase shifter for photonic quantum information applications is demonstrated. The device is based on a transverse electro-optic modulator in a Sagnac-type 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. We demonstrate that the device's operation maintains any arbitrary… Expand
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