Title :
Wavelength-division multi/demultiplexer utilizing optically active crystals
Author :
Fujii, Yohji ; Minowa, Junichiro
Author_Institution :
NTT Lab., Kanagawa, Japan
fDate :
7/1/1990 12:00:00 AM
Abstract :
A wavelength-division multi/demultiplexer (W-MUX/DEMUX) utilizing optically active crystals is proposed and studied. It is shown that using two or more optically active crystals having different rotary powers and dispersions is effective for providing design freedom and for easy assembly of the W-MUX/DEMUX. A design for a two-wavelength W-MUX/DEMUX is also discussed. Based on this design, a W-MUX/DEMUX that multiplexes or demultiplexes light with wavelengths of 0.8 and 1.1 μm was fabricated. The insertion losses are 1.6 and 3.1 dB at wavelengths of 0.8 and 1.1 μm, respectively. Crosstalk attenuation of 13 dB or more is obtained at these wavelengths
Keywords :
crosstalk; frequency division multiplexing; optical dispersion; optical losses; optical rotation; 0.8 micron; 1.1 micron; 1.6 dB; 3.1 dB; WDM; crosstalk attenuation; demultiplexer; dispersions; insertion losses; multi/demultiplexer; multiplexer design; optically active crystals; rotary powers; wavelength-division multiplexer; Assembly; Crystals; Dispersion; Lenses; Optical attenuators; Optical beam splitting; Optical design; Optical fiber polarization; Optical filters; Optical polarization;
Journal_Title :
Lightwave Technology, Journal of
