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Design of a polymer-based cladding mode stripper with a distributed temperature profile

Vincent Akash Gomes, Sajib Chowdhury, Shubhranil Maity, Debparna Majumder, Debasis Pal, and Atasi Pal

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Abstract

An optimized polymer-based fiber cladding mode stripper (CMS) is presented experimentally. A unique partial fiber stripping method is introduced in CMS fabrication to enable distributed power extraction and temperature along the length of the CMS. The designed CMS based on a 400 µm double-clad fiber (DCF) extracts 300 W of inner cladding power, with an attenuation coefficient of 18.8 dB along with a temperature gradient of 0.17°C/watt. The fabricated CMS is used to develop an all-fiber 150 W thulium fiber laser at 1.94 µm.

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