Study on characteristics of fiber loop mirror filters based on tapered fiber optimization

WU Xuemei; DONG Xingfa; JIANG Li; L&Uuml; Zhengbing

doi:10.7510/jgjs.issn.1001-3806.2015.06.020

Combining the optical properties of tapered fiber with the filtering characteristics of fiber loop mirrors, an optical loop mirror filter structure was put forward based on tapered fiber optimization. The study shows that after adding tapered fiber into cascaded second-order high-birefringence fiber (HBF) loop mirrors, 3dB bandwidth of main peak of filter output spectrum is significantly compressed. Quality factor is further improved and can reach about 5.2 easily. The study also shows that after adding tapered fiber into cascaded second-order HBF loop mirrors, tuning is more flexible in the modulation depth range from 10dB to 35dB and the output waveform becomes more stable. The filtering characteristics of HBF loop mirror were improved, and the filter is tunable more flexibly.

Study on characteristics of fiber loop mirror filters based on tapered fiber optimization

Corresponding author: DONG Xingfa, dongxfa@mail.usts.edu.cn;

1. College of Electronic and Information Engineering, Suzhou University of Science and Technology, Suzhou 215011, China

Received Date: 2014-10-04

Accepted Date: 2014-12-18

Available Online: 2015-11-25

Abstract: Combining the optical properties of tapered fiber with the filtering characteristics of fiber loop mirrors, an optical loop mirror filter structure was put forward based on tapered fiber optimization. The study shows that after adding tapered fiber into cascaded second-order high-birefringence fiber (HBF) loop mirrors, 3dB bandwidth of main peak of filter output spectrum is significantly compressed. Quality factor is further improved and can reach about 5.2 easily. The study also shows that after adding tapered fiber into cascaded second-order HBF loop mirrors, tuning is more flexible in the modulation depth range from 10dB to 35dB and the output waveform becomes more stable. The filtering characteristics of HBF loop mirror were improved, and the filter is tunable more flexibly.

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Reference (16)

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Study on characteristics of fiber loop mirror filters based on tapered fiber optimization

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