A tunable multiwavelength fiber laser source with an elliptical-core fiber Sagnac loop filter

Duan Liu; Nam Quoc Ngo; Xin Yong Dong; Kenneth T. V. Grattan; Tong Sun; Le Nguyen Binh; Swee Chuan Tjin; Song Yang Li

doi:10.1117/12.574359

10 January 2005 A tunable multiwavelength fiber laser source with an elliptical-core fiber Sagnac loop filter

Duan Liu, Nam Quoc Ngo, Xin Yong Dong, Kenneth T. V. Grattan, Tong Sun, Le Nguyen Binh, Swee Chuan Tjin, Song Yang Li

Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005) https://doi.org/10.1117/12.574359
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

A novel tunable multiwavelength erbium-doped fiber laser source based on a Sagnac loop filter is proposed and experimentally demonstrated. The filter, which is coupled together with the laser cavity, consists of a normal 3-dB fiber coupler, a polarization controller (PC1) and a segment of high-birefringence (Hi-Bi) fiber. The active gain medium, which is a polarization-maintaining erbium-doped fiber (PM-EDF) with an elliptical core, leads to possible multi-frequency lasing output at room temperature. In experiment, by changing the setting of the polarization controller (PC2), multiple frequency lasing lines with different wavelength spacing have been obtained. By applying some pressure to the PM-EDF, continuously tunable multiwavelength lasing output is achieved. Experimental results have shown several stable output lasing wavelengths with high extinction ratio at room temperature.

Citation Download Citation

Duan Liu, Nam Quoc Ngo, Xin Yong Dong, Kenneth T. V. Grattan, Tong Sun, Le Nguyen Binh, Swee Chuan Tjin, and Song Yang Li "A tunable multiwavelength fiber laser source with an elliptical-core fiber Sagnac loop filter", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); https://doi.org/10.1117/12.574359

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