Title :
DFB fiber lasers as optical wavelength standards in the 1.5-μm region
Author :
Simonsen, Harald ; Henningsen, Jes ; Søgaard, Susanne
Author_Institution :
Danish Inst. of Fundamental Metrol., Lyngby, Denmark
fDate :
4/1/2001 12:00:00 AM
Abstract :
A single-mode distributed feedback (DFB) fiber laser has been frequency locked to a CO2 absorption line at 1578.665 nm to demonstrate its potential as a wavelength standard. A frequency stability of 10-8 (≈2 MHz) was achieved on a time scale of minutes. A mechanical lead screw provided coarse wavelength tuning, white wavelength modulation and fast frequency corrections were applied by straining the fiber laser with piezoelectric transducers. With a suitable choice of absorption line, such a system may serve as an absolute frequency reference for dense wavelength-division multiplexing grids in telecommunication
Keywords :
carbon compounds; distributed feedback lasers; fibre lasers; frequency standards; laser frequency stability; wavelength division multiplexing; 1.5 mum; 1578.665 nm; 2 MHz; CO2; CO2 absorption line; DFB fiber lasers; absolute frequency reference; coarse wavelength tuning; frequency correction; frequency stability; optical wavelength standards; piezoelectric transducers; telecommunication; wavelength modulation spectroscopy; wavelength-division multiplexing; Absorption; Distributed feedback devices; Fasteners; Fiber lasers; Frequency; Laser feedback; Laser tuning; Optical feedback; Optical fibers; Stability;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
