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Optical Engineering

Fused-fiber-based 3-dB mode insensitive power splitters for few-mode optical fiber networks
Author(s): Fang Ren; Xiaoshan Huang; Jianping Wang
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Paper Abstract

We propose a 3-dB mode insensitive power splitter (MIPS) capable of broadcasting and combining optical signals. It is fabricated with two identical few-mode fibers (FMFs) by a heating and pulling technique. The mode-dependent power transfer characteristic as a function of pulling length is investigated. For exploiting its application, we experimentally demonstrate both FMF-based transmissive and reflective star couplers consisting of multiple 3-dB mode insensitive power splitters, which perform broadcasting and routing signals in few-mode optical fiber networks such as mode-division multiplexing (MDM) local area networks using star topology. For experimental demonstration, optical on-off keying signals at 10    Gb / s carried on three spatial modes are successfully processed with open and clear eye diagrams. Measured bit error ratio results show reasonable power penalties. It is found that a reflective star coupler in MDM networks can reduce half of the total amount of required fibers comparing to that of a transmissive star coupler. This MIPS is more efficient, more reliable, more flexible, and more cost-effective for future expansion and application in few-mode optical fiber networks.

Paper Details

Date Published: 1 November 2017
PDF: 8 pages
Opt. Eng. 56(11) 116101 doi: 10.1117/1.OE.56.11.116101
Published in: Optical Engineering Volume 56, Issue 11
Show Author Affiliations
Fang Ren, Univ. of Science and Technology Beijing (China)
Xiaoshan Huang, Univ. of Science and Technology Beijing (China)
Jianping Wang, Univ. of Science and Technology Beijing (China)

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