Single longitudinal mode laser generation using coupled microfiber Mach–Zehnder interferometer filter

Document Type

Article

Publication Date

1-1-2018

Abstract

The fabrication and operation of a single longitudinal mode (SLM) laser using a compact coupled microfiber Mach-Zehnder interferometer (CM-MZI) in an erbium doped fiber (EDF) laser cavity is demonstrated. The CM-MZI is created by first fabricating an optical microfiber using the flame-brushing technique before being cut and rejoined to form a half-loop, which is the basis for the CM-MZI structure. The CM-MZI is inserted into an EDF laser cavity; the filtering effect of the CM-MZI induces a stable SLM lasing output with a consistent 3 dB bandwidth of 0.02 nm at different a pumping power and signal-to-noise ratio of ∼50 dB. The output also exhibits minimal wavelength and power fluctuations of 0.02 nm and 0.15 dB, respectively, over a time period of 60 min.

Keywords

erbium doped fiber laser, Mach-Zehnder interferometer, microfiber, single longitudinal mode

Divisions

fsktm,photonics

Funders

Research grants RU 001-2017 and RP 029A—15 AFR from the University of Malaya,Research grant GA 010-2014 (ULUNG) from the Ministry of Higher Education, Malaysia

Publication Title

Laser Physics

Volume

28

Issue

8

Publisher

IOP Publishing

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