Spacing-tunable multiwavelength fiber laser source using a Sagnac loop filter

作者：Ngo NQ^*; Liu D; Dong XY; Binh LN; Tjin SC; Li SY

来源：Optical Engineering, 2005, 44(1): 014202.

DOI：10.1117/1.1828473

• tunable
• multiwavelength
• fiber lasers
• Sagnac loop filter
• erbiumdoped fiber

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.

• 出版日期2005-1
• 单位南阳理工学院