A pump power controlled 1,060 nm multiwavelength fiber ring laser using nonlinear polarization rotation of SOA

作者：Liu S; Fu Songnian^*; Tang Ming; Shum Perry; Liu Deming

来源：Applied Physics B: Lasers and Optics , 2013, 110(4): 445-449.

DOI：10.1007/s00340-012-5276-2

We propose and experimentally demonstrate a both channel spacing and wavelength-tunable 1,060 nm multiwavelength fiber laser using nonlinear polarization rotation of semiconductor optical amplifier (SOA). The SOA in the cavity can not only provide the gain but also generate a pump power controlled phase-shift between two orthogonal linear states of polarization. The experimental result shows that the fast and continuous wavelength tuning is achieved with external light injection, while the channel spacing of the multiwavelength laser can be varied by adjusting the length of polarization maintaining fiber. When an external laser source with 13 dBm power is injected into the SOA as a control pump, optically tunable operation of up to 20 wavelength channels, from 1,042 to 1,058 nm, with a wavelength spacing of 0.8 nm has been demonstrated with the signal-to-spontaneous-noise ratio over 40 dB at room temperature. The lasers are stable with a maximum power fluctuation per channel of less than 0.5 dB during 2-h test.

• 出版日期2013-3
• 单位华中科技大学