A Continuously Tunable Erbium-Doped Fibre Laser Using Tunable Fibre Bragg Gratings and Optical Circulator

作者：Liu Peng^*; Yan Feng Peng; Li Jian; Wang Lin; Ning Ti Gang; Gong Tao Rong; Jian Shui Sheng

来源：Chinese Physics Letters, 2008, 25(12): 4276-4279.

A continuously tunable erbium-doped fibrelaser (TEDFL) based on tunable fibre Bragger grating (TFBG) and a three-port optical circulator (OC) is proposed and demonstrated. The OC acts as a 100%-reflective mirror. A strain-induced uniform fibre Bragger grating (FBG) which functions as a partial-reflecting mirror is implemented in the linear cavity. By applying axial strain onto the TFBG, a continuously tunable lasing output can be realized. The avelength tuning range covers approximately 7.00 n min C band (from 1543.6161 to 1550.3307 nm). The side mode suppression ratio (SMSR) is better than 50dB, and the 3dB band width of the laser is less than 0.01 nm. Moreover, an array waveguide grating (AWG) is inserted into the cavity for wavelength preselecting, and a 50 km transmission experiment was performed using our TEDFL at a 10Gb/s modulation rate.

• 出版日期2008-12
• 单位邢台学院; 北京交通大学