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Coherent detection is a key enabling technology for optical communication networks as the telecommunication industry migrates to 40G and 100G systems with advanced modulation formats. Time-interleaving is an efficient method to improve the nonlinear performance of coherent systems. By reducing the nonlinear coupling between the polarization states, the optimum input power goes up, and the system performance is significantly increased.

The OFS ClearLite TruePhase Fiber Coil 1550 enables the use of time-interleaved return-to-zero (RZ) optical symbols by using a polarization maintaining (PM) fiber coil with customer specified differential group delay (DGD) between slow and fast axis propagation. The optical properties are optimized for broadband operation with low insertion loss, low PDL, high return loss, and high polarization extinction ratio. The fiber coil comes in two pigtail configurations, namely PM fiber pigtails or with a PM fiber pigtail input and SSMF pigtail output. The PM fiber length is designed to meet customer requirements of the DGD to within 1.0 ps over the full wavelength range and at appropriate operating temperatures. For representative product information, download our specification sheet.

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+45 43 45 8888
Priorparken 680, DK-2605
Broendby, Denmark