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|Title:||Highly nonlinear and dispersion-flattened fiber design for ultrafast phase-sensitive amplification|
Afshar Vahid, S.
|Citation:||Journal of Lightwave Technology, 2012; 30(21):3440-3447|
|Publisher:||IEEE-Inst Electrical Electronics Engineers Inc|
|H. Tilanka Munasinghe, Shahraam Afshar Vahid, and Tanya M. Monro|
|Abstract:||The properties of phase-sensitive amplification (PSA) in highly nonlinear fibers are studied. We present a soft glass fiber designed for high nonlinearity and broadband, low dispersion and simulate its performance as a PSA device for ultrafast bitrate signals at 640 Gb/s. The effect of the fiber design parameters on its PSA performance have been studied and the final design has been optimized using a genetic algorithm to have a high nonlinearity and low, flat dispersion. This design has subsequently been compared to other highly nonlinear fibers in order to highlight the effect of both using soft glass and the design and optimization technique. Modelled fiber performance shows squeezing of phase noise in a 5 m length of fiber with 32 dBm total power in the signal and pumps. The fiber length we have used in our model is two orders of magnitude shorter than the state of the art silica based PSA devices for comparable power levels. In addition, fabrication tolerance modelling is done to show that our fiber design is better able to manage fluctuations in the dispersion due to the high nonlinearity.|
|Keywords:||Broadband telecommunication networks; four-wave mixing; microstructured optical fiber; nonlinear fiber optics; optical communication; phase-sensitive amplification; soft glass.|
|Rights:||© 2012 IEEE Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.|
|Appears in Collections:||IPAS publications|
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