A polarization independent optical spectrum analyzer comprises a diffraction grating, input and output slit means and polarization-maintaining multi-pass optics for directing a light beam to and fro across the diffraction grating while maintaining its linear state of polarization. The optical spectrum...http://www.google.fr/patents/US7116848?utm_source=gb-gplus-shareBrevet US7116848 - Optical spectrum analyzer using a diffraction grating and multi-pass optics
Optical spectrum analyzer using a diffraction grating and multi-pass optics
