Title :
Low-noise narrow-linewidth fiber laser at 1550 nm (June 2003)
Author :
Spiegelberg, Christine ; Geng, Jihong ; Hu, Yongdan ; Kaneda, Yushi ; Jiang, Shibin ; Peyghambarian, N.
Author_Institution :
NP Photonic, Inc., Tucson, AZ, USA
Abstract :
We present a compact integrated fiber laser with more than 200 mW of output power. It combines polarized fiber output with very narrow linewidth of less than 2 kHz. The coherence length of the laser is measured to be longer than 5 km. The laser features high mode stability of less than ±10 MHz over hours. The relative intensity noise (RIN) spectrum is dominated by a peak at the relaxation oscillation frequency and is shot-noise limited otherwise. The RIN peak at 1 MHz is reduced to ∼-130 dB/Hz by integrating a negative feedback circuit. In addition to thermal wavelength tuning, the laser frequency can be modulated at a bandwidth of up to 10 kHz via the piezoelectric effect.
Keywords :
fibre lasers; integrated optics; laser feedback; laser frequency stability; laser modes; laser noise; laser tuning; laser variables measurement; optical fibre polarisation; optical losses; optical modulation; piezoelectricity; spectral line breadth; 1550 nm; coherence length; compact integrated fiber laser; fiber laser; high mode stability; laser frequency; laser noise; narrow linewidth; negative feedback circuit; piezoelectric effect; polarized fiber output; relative intensity noise spectrum; relaxation oscillation frequency; thermal wavelength tuning; Fiber lasers; Frequency; Laser feedback; Laser modes; Laser noise; Laser stability; Laser tuning; Optical fiber polarization; Power generation; Power lasers;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.822208
