DRAWING AN ULTRA-LOW LOSS ALL-SOLID PHOTONIC BANGAP FIBER FOR YTTERBIUM ASE SUPPRESSION

作者：Yan, Pei Guang^*; Zhao, Jian; Ruan, Shuang Chen; Yu, Yong Qin; Shu, Jie; Wu, Xu; Ding, Jin Fei; Wei, Hui Feng; Luo, Jie

来源：Microwave and Optical Technology Letters, 2010, 52(12): 2629-2632.

DOI：10.1002/mop.25578

• all solid photonic bandgap fiber
• ASE suppression

A passive all-solid photonic bandgap fiber (PBGF) was fabricated for ytterbium ASE controllable filtering. By direct adjustment of the fiber out-diameter in drawing process, we can tune the stop-band of ytterbium ASE to the desirable wavelength region. Our simulation results show a good agreement with measured bandgaps. The fiber is single mode and has a steep "cutting edge" in favor of ASE suppression. The measured transmission loss is 0.41 dB/km at wavelength of 1.55 mu m within the longer wavelength bandgap which is believed the lowest loss level of all-solid PBGF reported to the best of our knowledge. Its "stop-band" lies just in the range of 1.03-1.14 mu m and shows a perfect ASE suppression by using only 0.2 m length of fiber. It provides a costless and feasible way to build the gain-controllable laser with the nowadays mature conventional ytterbium-doped fiber and such passive PBGF fiber.

• 出版日期2010-12
• 单位深圳大学