Fiber Refractive Index Sensor Based on Fiber Core Mismatch Multimode Interference

Hao, 孙浩 Sun; Manli, 忽满利 Hu; Xueguang, 乔学光 Qiao; Qiangzhou, 荣强周 Rong; Guanghua, 向光华 Xiang; Lei, 梁磊 Liang; Qinfang, 徐琴芳 Xu

doi:10.3788/cjl201239.0205001

Cited by 2 publications

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“…Erbium ions are one of the key materials in the field of optical communications in the 1500-1550 nm band. Since fiber lasers have the advantages of low insertion loss when used in fiber optic communication systems, and erbium-doped fiber corresponds to the low-loss window of fiber optic communication in the 1500-1550 nm band [1], fiber lasers doped with Er 3+ have increasingly become a popular topic for domestic and foreign scholars.…”

Section: Introductionmentioning

confidence: 99%

Design of Fiber Laser Based on Erbium-ion

2024

HSET

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Erbium ions (Er3+) exhibit good characteristics of fiber lasers in the 1500-1550 nm band, including three-level systems, high tilt efficiency, and large emission cross sections. This article focuses on studying the spectral characteristics of erbium ions, simulating the power propagation equation of erbium-doped ion fiber lasers, and calculating the pump power threshold and output power. The findings of the simulation indicate that the laser begins to produce 10 W of pump optical power. The laser power hits 34.38 W and the oblique power is determined to be 38.20% as soon as the pump power exceeds 100 W. Experimental results show that when pump light propagates forward, the forward propagation power of the pump light will weaken, the forward propagation power of the signal light will increase, the reverse propagation of the signal light will weaken and the reverse propagation of the pump light will Transmission will also weaken, with directional transmission remaining largely unchanged. This study carried out numerical simulations on the experimental parameters of the fiber laser doped with Er3+and finally obtained the output power of pump light and signal light under these conditions, providing better data support for the preparation of 1500-1550 nm fiber laser doped with erbium ion.

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Section: Introductionmentioning

confidence: 99%