A switchable and wavelength-spacing tunable single-frequency and single-polarization dual-wavelength erbium-doped fiber laser based on a compound-cavity structure

作者：Feng Ting^*; Yan Fengping; Liu Shuo; Peng Wanjing; Tan Siyu; Bai Yunlong; Bai Yan

来源：Laser Physics, 2014, 24(8): 085101.

DOI：10.1088/1054-660X/24/8/085101

• fiber laser
• single-frequency
• single-polarization
• dual-wavelength
• wavelength-spacing-tunable
• switchable

A switchable and wavelength-spacing tunable single-frequency and single-polarization dual-wavelength erbium-doped fiber laser is proposed and demonstrated experimentally. The fiber laser is composed of a main linear cavity and two subring cavities. In dual-wavelength operation, the wavelength spacing can be tuned from 0.430 nm to 4.487 nm, showing that the fiber laser can be used for photonic generation of a microwave signal with a tunable frequency range from 54 GHz to 563 GHz; in single-wavelength operation, the fiber laser can either work at a fixed wavelength of 1544.108 nm or work at a wavelength with a tunable range of 4.057 nm, from 1544.538 nm to 1548.595 nm. The linewidths of two wavelengths are approximately 760 Hz and 810 Hz respectively. The polarization-extinction ratios of the laser outputs, both in dual- and single-wavelength operation, are higher than 30 dB.

• 出版日期2014-8
• 单位北京交通大学