Title :
Chromatic dispersion measurement in 1.55 mu m narrow-band region using a tunable external-cavity laser
Author :
Horiuchi, Yukio ; Namihira, Yoshinori ; Wakabayashi, Hiroharu
Author_Institution :
KDD Meguro Res. & Dev. Lab., Tokyo, Japan
Abstract :
Measurement of the chromatic dispersion of an 80.6-km-long, concatenated, dispersion-shifted, single-mode fiber (DSF) with a tunable 1.55- mu m external-cavity laser diode, using the phase-shift technique at 1.55 mu m over 80-nm bandwidth, is discussed. It is shown that the technique does not need intricate curve-fitting equations or a large number of laser sources with specified wavelengths. As a result, the measurement configuration and procedure are relatively simple. The technique is useful for measuring the chromatic dispersion of future advanced fibers such as dispersion flattened fibers with various refractive index profiles.<>
Keywords :
measurement by laser beam; optical dispersion; optical fibres; optical variables measurement; 1.55 micron; chromatic dispersion; concatenated; dispersion flattened fibers; dispersion-shifted; future advanced fibers; narrow-band region; phase-shift technique; refractive index profiles; single-mode fiber; tunable external-cavity laser; turnable external-cavity laser diode; Bandwidth; Chromatic dispersion; Concatenated codes; Curve fitting; Diode lasers; Equations; Narrowband; Phase measurement; Tunable circuits and devices; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
