Title :
A new method for measurement of group velocity dispersion of optical fibers by using a frequency-shifted feedback fiber laser
Author :
Yoshida, Masato ; Nakamura, Koichiro ; Ito, Hiromasa
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
A new method for the measurement of the group velocity dispersion (GVD) in optical fibers, based on optical frequency domain reflectometry (OFDR), is proposed and demonstrated. Frequency chirped light is used as a light source, which allows the dispersion to be determined from changes in the frequency chirp rate. Accurate measurement of the average dispersion, at a single terminal, in fibers up to several tens of kilometers, is accomplished using a frequency-shifted feedback fiber laser as a light source.
Keywords :
chirp modulation; fibre lasers; laser feedback; light sources; optical fibre communication; optical fibre dispersion; optical fibre testing; optical modulation; reflectometry; average dispersion; dispersion; frequency chirp rate; frequency chirped light; frequency-shifted feedback fiber laser; group velocity dispersion; light source; optical fibers; optical frequency domain reflectometry; single terminal; Chirp; Frequency domain analysis; Frequency measurement; Laser feedback; Light sources; Optical feedback; Optical fiber dispersion; Optical fibers; Reflectometry; Velocity measurement;
Journal_Title :
Photonics Technology Letters, IEEE
