All-fiber wavelength-tunable passive phasing of eight channels of fiber amplifiers using optical feedback loop

作者：Yang, Baolai; Wang, Xiaolin^*; Ma, Pengfei; Zhou, Pu; Xu, Xiaojun

来源：Applied Physics Express, 2015, 8(2): 022502.

DOI：10.7567/APEX.8.022502

We present an all-fiber wavelength-tunable passive coherent combining configuration using an optical feedback loop and demonstrate the passive phasing of eight channels of fiber amplifiers experimentally. The stability of the all-fiber architecture and the simplicity of passive phasing are integrated in the configuration. The power combining efficiency is 96.7%, the residual phase error is below lambda/15, and phase noises below 100 Hz are compensated efficiently. By inserting a spectral tunable filter in the feedback loop, the passive coherent combining configuration is afforded a wavelength-tuning ability.

• 出版日期2015-2
• 单位中国人民解放军国防科学技术大学