A tunable second-order PMD module with constant mean first-order DGD

K. C. Zeng

doi:10.1117/12.543165

15 December 2003 A tunable second-order PMD module with constant mean first-order DGD

K. C. Zeng

Proceedings Volume 5260, Applications of Photonic Technology 6; (2003) https://doi.org/10.1117/12.543165
Event: Applications of Photonic Technology, 2003, Quebec City, Québec, Canada

Abstract

We present a tunable second-order Polarization Mode Dispersion (SOPMD) module with constant mean first-order differential group delay (DGD). The module consists of a variable DGD line (variable from τ^min_variable to τ^max_variable), a polarization controller, and a high birefringent (HiBi) fiber segment with a DGD value of τ_fixed. A Muller transitional matrix has been employed to describe the system. Theoretical calculations predict that after careful calibrations, by tuning the variable DGD line, the module can provide SOPMD values variable from Φ₀ to 1/2τ²_fixed+Φ₀(Φ₀ is a constant), while its mean first-order DGD is kept at a constant value of about τ_fixed. We implemented two of such modules, e.g. module No. 1 and No.2, which have different tuning range of SOPMD and different mean DGD values. For module No. 1, a variable DGD line (variable from 0.68 to 15.00 ps) and a HiBi fiber with a DGD value of about 10.5 ps were used. Module No. 1 demonstrates variable SOPMD values from about 37.0 to 522.0 ps² with an accuracy of about ±1.0 ps. Module No. 2 demonstrates variable SOPMD values from about 10.0 to 63.0 ps² with an accuray of about ± 5.0 ps², while its mean first-order DGD is kept at a ocnstant value of about 10.5 ± 1.0ps. The implications of this tunable Second-order PMD Module on high-speed (≥ 10 Gbit/s) optical communications are discussed.

Citation Download Citation

K. C. Zeng "A tunable second-order PMD module with constant mean first-order DGD", Proc. SPIE 5260, Applications of Photonic Technology 6, (15 December 2003); https://doi.org/10.1117/12.543165

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