Design of low DMD few-mode optical fibers with extremely enlarged core diameter providing nonlinearity suppression for operating over “C”-band central region

Vladimir A. Andreev; Anton V. Bourdine; Vladimir A. Burdin; Alexander S. Evtushenko; Rashid H. Halikov

doi:10.1117/12.2270555

6 April 2017 Design of low DMD few-mode optical fibers with extremely enlarged core diameter providing nonlinearity suppression for operating over “C”-band central region

Vladimir A. Andreev, Anton V. Bourdine, Vladimir A. Burdin, Alexander S. Evtushenko, Rashid H. Halikov

Author Affiliations +

Proceedings Volume 10342, Optical Technologies for Telecommunications 2016; 1034207 (2017) https://doi.org/10.1117/12.2270555
Event: XIV International Scientific and Technical Conference on Optical Technologies in Telecommunications, 2016, Samara, Russian Federation

Abstract

We present method for design of refractive index profile for silica GeO2-doped graded-index few-mode optical fibers with reduced differential mode delay and suppressed mode nonlinearity due to extremely enlarged core diameter up to 42 μm. Proposed solution is based on earlier on developed modified Gaussian approximation generalized for analysis of silica weakly guiding optical fibers with single outer cladding and arbitrary axially-symmetric refractive index profile, that provides ability to derive analytical expressions for guided mode delays. Therefore the objective function is represented as a sum of squares of deviations between mode staff delays and reference value corresponding to refractive index profile of current iteration. Based on developed method we performed computation for various combination of the reference mode delay and first iteration profile parameter. Some results of desired graded-index profile for a few-mode optical fibers 42/125 providing differential mode delay minimization over central region of "C"-band are represented.

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Vladimir A. Andreev, Anton V. Bourdine, Vladimir A. Burdin, Alexander S. Evtushenko, and Rashid H. Halikov "Design of low DMD few-mode optical fibers with extremely enlarged core diameter providing nonlinearity suppression for operating over “C”-band central region", Proc. SPIE 10342, Optical Technologies for Telecommunications 2016, 1034207 (6 April 2017); https://doi.org/10.1117/12.2270555

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