DocumentCode :
1087097
Title :
Performance of cascaded misaligned optical (de)multiplexers in multiwavelength optical networks
Author :
Khrais, N.N. ; Elrefaie, A.F. ; Wagner, R.E. ; Ahmed, S.
Author_Institution :
Dept. of Electr. Eng., City Coll. of New York, NY, USA
Volume :
8
Issue :
8
fYear :
1996
Firstpage :
1073
Lastpage :
1075
Abstract :
We use computer simulation techniques to evaluate the limitations on laser misalignment tolerances for multiwavelength optical networks with a cascade of 2 to 100 (de)multiplexers modelled as either first-order filters or third-order Butterworth filters. The results are dependent on the number of (de)multiplexers used, on the bit rate, and on the filter characteristics. We find that both the magnitude and the phase characteristics of the (de)multiplexer transfer function are important in determining the distortion-induced penalties. The allowable laser misalignment tolerances, at 10 Gb/s and for systems using (de)multiplexers modelled as third-order Butterworth filters, vary from /spl plusmn/78 GHz (/spl plusmn/0.63 nm) for systems with a cascade of 2 filters to /spl plusmn/18 GHz (/spl plusmn/0.15 nm) for systems with a cascade of 100 filters.
Keywords :
Butterworth filters; demultiplexing; filtering theory; multiplexing; optical fibre networks; optical noise; optical transfer function; simulation; 10 Gbit/s; 18 GHz; 78 GHz; allowable laser misalignment tolerances; bit rate; cascaded misaligned optical demultiplexers; computer simulation techniques; demultiplexer transfer function; distortion-induced penalties; filter cascade; filter characteristics; first-order filters; laser misalignment tolerances; multiwavelength optical networks; phase characteristics; third-order Butterworth filters; Bit rate; Computer simulation; Laser modes; Laser noise; Optical distortion; Optical fiber networks; Optical filters; Phase distortion; Quantum cascade lasers; Transfer functions;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/68.508742
Filename :
508742
Link To Document :
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