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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 27 — Sep. 20, 2012
  • pp: 6586–6593

Three-wavelength parallel optical fiber dispersion measurement using dual-heterodyne mixing

Tatsutoshi Shioda, Naoya Shimizu, and Masaichi Nakamura  »View Author Affiliations

Applied Optics, Vol. 51, Issue 27, pp. 6586-6593 (2012)

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We propose a novel optical dispersion measurement system using dual-heterodyne mixing to measure the relative phase. The system can realize parallel measurement of the relative phases between adjacent frequencies by introducing optical modulators to generate optical sidebands from a laser light source and an arrayed waveguide grating to separate the sidebands. To realize a wide dispersion range, different frequency intervals for the adjacent frequencies were combined in the system. One is the three-frequency optical dispersion measurement system (three-frequency measurement), which has been developed to measure the relative phase between adjacent peaks of an optical frequency spectrum with intervals of 25 GHz generated without any frequency scanning. The other is the four-frequency optical dispersion measurement system (four-frequency measurement) with intervals of 2 GHz generated from the three-frequency sets to expand the measurement range. The experimental results using single-mode optical fibers of different lengths from 0 to 90 km indicated the dispersion slope to be 16.8ps/nm/km with a measurement range of 2500ps/nm and an uncertainty of less than 1ps/nm. The proposed system provides advantages to enable parallel measurement on a frequency axis without a high-speed (GHz) photodetector, even though GHz spacing on the optical scale is used, thus reflecting the dual-heterodyne mixing.

© 2012 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: August 7, 2012
Revised Manuscript: August 28, 2012
Manuscript Accepted: August 28, 2012
Published: September 18, 2012

Tatsutoshi Shioda, Naoya Shimizu, and Masaichi Nakamura, "Three-wavelength parallel optical fiber dispersion measurement using dual-heterodyne mixing," Appl. Opt. 51, 6586-6593 (2012)

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