ALL-FIBER DEPOLARIZER

摘要

An all-fiber optical depolarizer is provided in which polarized light is controllably injected into a polarization beam splitter at a 45.degree. angle. The beam splitter is combined with a loop made of standard non-birefringent fiber through which one of the polarizations split by the beam splitter circulates. The loop has a length greater than the coherence length of the light source. The interaction of the beam splitter a nd the loop produces incoherent depolarized light at the output transmission port of the beam splitter.