Device for detecting polarization mode dispersions

Details Device for detecting polarization mode dispersions Device for detecting polarization mode dispersions

2005-05-31

2005-05-31

Negash, Kinfe-Michael (Department: 2633)

Optical communications

Receiver

Heterodyne

C398S029000, C398S065000, C398S081000, C398S147000, C398S094000

Reexamination Certificate

active

06901225

ABSTRACT:
A device is provided for detecting polarization mode dispersion of an optical data signal, wherein the device includes at least two filters, each of which is respectively followed by a power detector. A better compensation can ensue due to the combination of a large monotony range and great steepness in the employment of a number of filters.

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Takahashi, T. et al.: “Automatic Compensation Technique for Timewise Fluctuating Polarisation Mode Dispersion in In-Line Amplifier Systems” Electronics Letters, vol. 30, No. 4, pp. 348-349.
Patent Abstracts of Japan, vol. 1995, No. 11, & JP 07 231297, Aug. 29, 1995, 1 sheet.
Yoshimura, Masato et al.: “Polarization Mode Dispersion Equalization”, Proceedings OEC (1994), 14E-12, pp. 258-259.
Taylor, M. G.: Improvement in Q with Low Frequency Polarization Modulation on Transoceanic EDFA Link, IEEE Photonic Technology Letters, vol. 5, No. 3, (1994), pp. 860-862.
Watley, D.A. et al.: Compensation of Polarisation-Mode Dispersion Exceeding One Bit Period Using Single High-Birefringence Fibre, Electronic Letters, vol. 35, No. 13, (1999) pp. 1094-1095.
Bergano, Neal S. et al.: “Margin Measurements in Optical Amplifier Systems”, IEEE Photonic Technology Letters, vol. 5, No. 3, (1993) pp. 304-306.

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