Title :
A wide-band guided-wave periodic multi/demultiplexer with a ring resonator for optical FDM transmission systems
Author :
Oda, Kazuhiro ; Takato, Norio ; Toba, Hiromu ; Nosu, Kiyoshi
Author_Institution :
NTT Labs., Kanagawa, Japan
fDate :
6/1/1988 12:00:00 AM
Abstract :
A wide-band guided-wave periodic multi/demultiplexer with a ring resonator for optical frequency-division-multiplexing (FDM) transmission systems is demonstrated. This periodic multi/demultiplexer consists of a Mach-Zehnder interferometer and ring resonator. It has a flat wide bandwidth and sharp cutoff regions. The authors describe theoretical analysis, design method, and experimental results of the multi/demultiplexer. The fabricated periodic multi/demultiplexer with a ring resonator has 5-GHz channel frequency separation at the 1.55-μm wavelength region. Measured average loss was 4.8-dB and the average crosstalk was -13.2 dB. At 0.5-dB loss up from the minimum loss level, a width of 4.0 GHz was measured. This `0.5-dB bandwidth´ is 1.8 times wider than that of the conventional Mach-Zehnder type periodic multi/demultiplexer
Keywords :
cavity resonators; crosstalk; frequency division multiplexing; light interferometers; multiplexing equipment; optical communication equipment; 1.55 micron; Mach-Zehnder interferometer; channel frequency separation; crosstalk; optical FDM transmission systems; optical frequency-division-multiplexing; ring resonator; wide-band guided-wave periodic multi/demultiplexer; Design methodology; Directional couplers; Frequency division multiplexing; Loss measurement; Optical crosstalk; Optical filters; Optical interferometry; Optical ring resonators; Optical waveguides; Wideband;
Journal_Title :
Lightwave Technology, Journal of
