| Title |
Current-Controlled Wavelength-Tunable Fiber Comb Filter based on Polarization-Diversity Loop Configuration |
| Authors |
Dae-Ho Choi ; Yong-Wook Lee |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2010.24.12.033 |
| Keywords |
Polarization-Diversity Loop Configuration ; Polarization-Maintaining Fiber ; Enameled Wire ; Polarization Beam Splitter |
| Abstract |
In this paper, we have demonstrated absolute wavelength tuning in an optical fiber comb filter based on a polarization-diversity loop configuration by controlling the current injected into enameled wires wound on polarization-maintaining fibers (PMF"s), that is, adjusting Joule heat generated from enameled wires. The proposed fiber comb filter consists of a polarization beam splitter, a half-wave plate, a quarter-wave plate, and PMF"s. And we observed wavelength change of spectral dips in transmission spectra of the fabricated filter by varying an input current applied to enameled wires. The absolute wavelength of the filter could be controlled in proportional to the square of the input current with good linearity, and the rate of the wavelength shift with respect to the input current was measured as 36.79[㎚/A²]. |