Title:
波長分散測定装置及びその方法
Document Type and Number:
Japanese Patent JP4004720
Kind Code:
B2
Abstract:
A signal having a low frequency fm is superposed on a signal having a high frequency f1. The light having the frequency fs is modulated and transmitted to a transmission line as a wavelength dispersion measurement light. A local oscillation light is multiplexed with the wavelength dispersion measurement light, and heterodyne-detected on a receiving side. Sideband components generated by modulating the frequency fs within the heterodyne-detected wavelength dispersion measurement light are extracted by bandpass filters, and the wavelength dispersion value of the transmission line is calculated by detecting the phase difference between the sideband components.
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Inventors:
Clothing bag Sadao
Joji Ishikawa
Joji Ishikawa
Application Number:
JP2000240594A
Publication Date:
November 07, 2007
Filing Date:
August 09, 2000
Export Citation:
Assignee:
富士通株式会社
International Classes:
G01J9/04; G01M11/02; G01M11/00; G02F2/00
Domestic Patent References:
| JP11271179A | ||||
| JP2000009592A | ||||
| JP2000314678A | ||||
| JP2002048679A |
Attorney, Agent or Firm:
Yoshiyuki Osuga
Motoaki Hisagi
Motoaki Hisagi