Optical fiber multi-wavelength filter and method of controlling wavelength of spectrum using the same

摘要

An optical fiber multi-wavelength filter based on a polarization-diversity loop configuration within which polarization-maintaining fibers are contained with some optical elements is disclosed. The filter includes a coil heater adjacent to polarization-maintaining fibers. An ambient temperature of the polarization-maintaining fiber is controlled by adjusting a current applied to the coil heater.

主权项

1. An optical fiber multi-wavelength filter in which polarization-maintaining fibers are connected with optical elements in a polarization-diversity loop configuration, comprising:
a coil heater provided to the polarization-maintaining fibers, wherein an ambient temperature of the polarization-maintaining fibers is adjusted by a current applied to the coil heater such that the wavelength of output spectrum of the optical fiber multi-wavelength filter is adjusted accordingly, and wherein the coil heater includes a coil which converts electricity into heat.