Achromatic optical phase shifter–modulator

Andrei V. Zvyagin, David D. Sampson
2001 Optics Letters  
We propose and demonstrate, theoretically and experimentally, a novel achromatic optical phase shiftermodulator based on a frequency-domain optical delay line configured to maintain zero group delay as variable phase delay is generated by means of tilting a mirror. Compared with previously reported phase shiftermodulators, e.g., based on the Pancharatnam (geometric) phase, our device is high speed and polarization insensitive and produces a large, bounded phase delay that, uniquely, is
more » ... e mapped to a measurable parameter, the tilt angle.
doi:10.1364/ol.26.000187 pmid:18033542 fatcat:qdsorl24cjakbixneyipxdx2ym