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Synthesis of Asymmetric Flat-Top Birefringent Interleaver Based on Digital Filter Design and Genetic Algorithm

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4 Author(s)
Pinzon, P.J. ; Dept. de Tecnol. Electron., Univ. Carlos III de Madrid, Leganes, Spain ; Vazquez, C. ; Perez, I. ; Sanchez Pena, J.M.

A flexible and fast synthesis method for designing asymmetric interleavers with flat-top, low dispersion, adjustable isolation, and bandwidths at both outputs is proposed. Interleavers are designed on birefringent technology allowing linear-phase designs. Z-transform properties and digital filter design techniques are used for designing interleavers under a set of specifications. At a second level, a genetic algorithm optimization approach allows improving the interleaver design adjusting the minimum isolation, at both outputs, below -43 dB and the stop bandwidths to specific normalized values of ±0.15 and ±0.3, with zero dispersion at one output. Improvement of the interleaver order and dispersion below ±50 ps/nm at both outputs are also reported.

Published in:

Photonics Journal, IEEE  (Volume:5 ,  Issue: 1 )

Date of Publication:

Feb. 2013

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