适合ITU标准的σ形腔多波长光纤激光器

Experimental study on σ-figure 4-wavelength and 8-wavelength fiber lasers suitable for ITU Standard

本文阐述了光纤激光器的组成及工作原理;为获得适合ITU标准的多波长光纤激光器,利用自制的4、8反射峰光纤光栅确定波长,采用σ形腔结构,获得了4、8波长同时激射的激光输出,并将8波长光纤激光器输出的8个单路波长进行分离。输出波长间隔满足ITU-T所建议的WDM光纤通信系统波长标准,没有调制时单波长线宽0.01nm。实验表明利用光纤光栅和普通掺铒光纤可以研制出满足ITU-T建议的WDM光纤通信系统波长标准的多波长光纤激光器。

Principle and makeup of the fiber laser is introduced in this paper. In order to get multi-wavelength fiber lasers suitable for ITU standard, we fabricated σ-figure fiber lasers with 4,8 wavelengths simultaneous lasing by means of the 4.8-peak high reflectivity grating to select the wavelengths. Also the 8 wavelengths, output of the 8-wavelengths fiber laser, are separated. The spacing of output wavelength accords with the WDM wavelength standard proposed by ITU-T. The single wavelength linewidth without modulation is 0. 01nm. The experiment shows that multi-wavelength fiber lasers suitable for ITU standard can be developed using the fiber Bragg grating and the ordinary Er-doped fiber.