Title:
光チャネルモニタのデータ収集方法およびプログラムならびに伝送装置
Document Type and Number:
Japanese Patent JP5194775
Kind Code:
B2
Abstract:
A method of collecting data from an optical channel monitor for monitoring the power of a wavelength-division multiplexed light signal at each wavelength is disclosed. The total light power is analog-to-digital converted by an A/D converter. The data of the total light power which has been analog-to-digital converted is compared with a reference light power by a comparator for each conversion, and when the difference between the total light power and the reference light power exceeds a predetermined threshold, a power fluctuation flag is turned ON. After the comparison, the above process of the analog-to-digital conversion and the comparison is iterated until the optical channel monitor completes the data collection for each wavelength. Thereafter, the processor determines whether the power fluctuation flag is ON or not. When the power fluctuation flag is ON, the processor discards the currently collected data and maintains the data which were collected immediately before.
Inventors:
Takeshi Oguma
Application Number:
JP2007330059A
Publication Date:
May 08, 2013
Filing Date:
December 21, 2007
Export Citation:
Assignee:
NEC
International Classes:
H04B10/07; H04J14/00; G01J9/00; H04B10/079; H04J14/02
Domestic Patent References:
| JP2006286918A | ||||
| JP2006310963A | ||||
| JP2006197125A | ||||
| JP2005318567A | ||||
| JP2005117416A |
Foreign References:
| US20030030859 | ||||
| US20060031019 |
Attorney, Agent or Firm:
Akio Miyazaki
Ishibashi Masayuki
Masaaki Ogata
Ishibashi Masayuki
Masaaki Ogata