Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-11-27
1999-03-02
Lefkowitz, Edward
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359127, 359166, 359174, 359177, H04B 1002
Patent
active
058778780
ABSTRACT:
The purpose of the invention is to detect a surveillance signal in a shorter time without lowering the usable merit of wavelength. The transmission signal transmitting through the optical fiber transmission lines is specified as a light FDM signal multiplexed in wavelength, and the surveillance light signal is interposed in the middle of two adjacent channel slots. The surveillance light signal is produced such that the spread spectrum is applied to the surveillance carrier and thereby a light signal is modulated in intensity. The light FDM signal and surveillance light signal are turned to the facing transmission lines in the optical repeaters to be received by each terminal station, and the modulation rate of the surveillance light signal can be made deeper so that the surveillance signal can be detected in a shorter time.
REFERENCES:
patent: 4727601 (1988-02-01), Konishi
patent: 5296957 (1994-03-01), Takahashi et al.
patent: 5436746 (1995-07-01), Hirst
patent: 5500756 (1996-03-01), Tsashima et al.
patent: 5790294 (1998-08-01), Horiuchi et al.
Akiba Shigeyuki
Horiuchi Yukio
Yamamoto Shu
Kokusai Denshin Denwa Kabushiki Kaisha
Lefkowitz Edward
LandOfFree
Surveillance method of optical amplifier-repeater transmission s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surveillance method of optical amplifier-repeater transmission s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surveillance method of optical amplifier-repeater transmission s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-428006