Polarization independent all-optical clock recovery scheme based on birefringent resonator

Qing Wang, Tuomo Von Lerber, Seppo Honkanen, Franko Küppers

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We introduce a polarization insensitive scheme for all-optical clock recovery and demonstrate how it works with data signals highly distorted by chromatic dispersion and self-phase modulation. The scheme which is known for its multi-wavelength and multi-data-rate capabilities is based on a birefringent fiber resonator and a polarizer. In this article we show how it can handle data signals which have undergone distortion due to transmission over dispersive and nonlinear fiber-optic propagation paths and which come in with arbitrary polarization orientation. Bit-pattern dependent amplitude fluctuations of the recovered clock signal are equalized by means of a semiconductor optical amplifier operated in saturation. The experimental results which, as a proof-of-concept, are obtained from single-wavelength channel 10 Gbit/s return-to-zero data agree well with numerical simulations.

Original languageEnglish
Pages (from-to)242-247
Number of pages6
JournalJournal of Optical Communications
Issue number4
Publication statusPublished - 2007
Externally publishedYes


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