1 January 2005 Spacing-tunable multiwavelength fiber laser source using a Sagnac loop filter
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A novel spacing-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 multifrequency lasing output at room temperature. In the experiment, by changing the setting of the polarization controller (PC2), multiple-frequency lasing lines with different wavelength spacing are obtained. Experimental results show several stable output lasing wavelengths with high extinction ratios at room temperature.
© (2005) Society of Photo-Optical Instrumentation Engineers (SPIE)
Nam Quoc Ngo, Duan Liu, Xinyong Dong, Le Nguyen Binh, Swee Chuan Tjin, Song Yang Li, "Spacing-tunable multiwavelength fiber laser source using a Sagnac loop filter," Optical Engineering 44(1), 014202 (1 January 2005). https://doi.org/10.1117/1.1828473 . Submission:

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