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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 22, Iss. 4 — Apr. 1, 2004
  • pp: 1041–

Versatile Integrated PMD Emulation and Compensation Elements

C. K. Madsen, M. Cappuzzo, E. J. Laskowski, E. Chen, L. Gomez, A. Griffin, A. Wong-Foy, S. Chandrasekhar, L. Stulz, and L. Buhl

Journal of Lightwave Technology, Vol. 22, Issue 4, pp. 1041- (2004)


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Abstract

Highly versatile building blocks for polarization-mode dispersion (PMD) emulation and compensation are demonstrated using tunable all-pass filters fabricated in 4%-index-contrast planar waveguides. While the all-pass filters can approximate any phase response,the complexity in setting the individual filter parameters is minimized by restricting the all-pass filter responses to realize a range of differential delays, dispersion, and dispersion slope. A single section can approximate first-order or a higher-order PMD term or emulate chromatic or higher-order dispersion. A differential group delay (DGD) tuning range over 100 ps is demonstrated for 10 Gb/s and 25 ps for 40 Gb/s data. Second-order PMD with a tuning range of 255 ps^2 and third-order PMD with a range of 2430 ps^3 are also demonstrated. The larger index contrast required for the ring-resonator-based all-pass filters is advantageous in reducing the thermooptic response time to achieve polarization rotation speeds on the order of 0.1 µs/degree. The device is interferometrically stable and compact in size. It can be fully integrated, scaled to many sections,and can implement a variety of PMD synthesis and statistical-emulation approaches.

© 2004 IEEE

Citation
C. K. Madsen, M. Cappuzzo, E. J. Laskowski, E. Chen, L. Gomez, A. Griffin, A. Wong-Foy, S. Chandrasekhar, L. Stulz, and L. Buhl, "Versatile Integrated PMD Emulation and Compensation Elements," J. Lightwave Technol. 22, 1041- (2004)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-22-4-1041

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