Patent ID: 9507092
Filing Date: 2016-11-29
CPC Classification: G02B,G02F

Claim Text:
1. An optical fiber flexible multi-wavelength filter based on a polarization-diversity loop, comprising: a pair of high-birefringence optical fibers; a polarization beam splitter connected to the pair of high-birefringence optical fibers and dividing light incident from a broadband light source into two polarized beams; and a polarization controller connected to the high-birefringence optical fibers or the polarization beam splitter and controlling the two polarized beams divided by the polarization beam splitter, wherein the polarization controller includes a ½ wave plate or a ¼ wave plate, and the polarization controller disposed between the high-birefringence optical fibers controls an angle difference between principal axes of the high-birefringence optical fibers and visibility, and interference in the high-birefringence optical fibers is controlled by changing polarized light incident from the broadband light source using the polarization controller, and a multi-wavelength interference spectrum and interleaving of a wavelength of the spectrum is generated.