Wavelength tunable double-ring cavity erbium-doped random fiber laser based on a Mach–Zehnder interferometer

He, Wei; Zhang, Wenduo; Liu, Haochong; Li, Shaode; Tan, Qinggui; Zhu, Lianqing

doi:10.1016/j.yofte.2023.103337

Cited by 2 publications

(1 citation statement)

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“…The wavelength-tunable Raman RFL with a tuning range of 1535-1570 nm was first realized by incorporating tunable filters inside the cavity [15], which can achieve excellent power uniformity across the tuning range. Rare-earth-doped RFLs with tunable spectra have also been reported in erbium-doped RFLs [16,17] and ytterbium-doped RFLs [18,19] with low thresholds. The hybrid gain is further used to extend the wavelength tunability performance of RFLs.…”

Section: Introductionmentioning

confidence: 93%

A Theoretical Investigation of an Ultrawide S-, C- and L-Band-Tunable Random Fiber Laser Based on the Combination of Tellurite Fiber and Erbium-Doped Fiber

Chen,

Li,

Liang

et al. 2024

Photonics

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In this paper, we present a new scheme to generate ultrawide tunable random fiber lasers (RFLs) covering the S-, C- and L-band by combining the broadband Raman gain in tellurite fibers and the active gain in erbium-doped fibers. A numerical simulation based on the power-balance model is conducted to verify the feasibility of the ultrawide tunable random fiber lasing generation. Pumped by a 1450 nm laser, the tunable random Raman fiber laser in the ranges of 1480–1560 nm and 1590–1640 nm can only be realized with a tellurite fiber. To further fill in the emission gap in the range of 1560–1590 nm, the erbium-doped fiber is incorporated in the cavity, which can provide efficient erbium-doped gain in the C- and L-band. By combining a 100 m long tellurite fiber and an 8 m long erbium-doped fiber, an ultrawide tunable RFL based on hybrid erbium–Raman gain can be realized with a wavelength tuning range (1480 nm–1640 nm) covering the S-, C- and L-band at 3.5 W pump power. Such a widely tunable RFL is of great importance in applications such as optical communication, sensing and imaging.

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