Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1998-03-20
1999-08-24
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359161, H04B 1008
Patent
active
059431474
ABSTRACT:
A multi-wavelength optical telecommunication method includes the steps of generating at least one optical transmission signal in a predetermined wavelength band, transmitting the optical transmission signal through an optical fibre to a receiving station, receiving the optical transmission signal through a passband filter and filtering the signal to let the transmission signal alone pass. The wavelength band is scanned in order to identify in the band a recognizable portion of the optical spectrum being received, thus determining, based on the operating conditions corresponding to the recognizable spectrum portion, a search range of the transmission signal within which the transmission signal is searched out and recognized based on its spectral profile.
REFERENCES:
patent: 4947459 (1990-08-01), Nelson et al.
patent: 5513029 (1996-04-01), Roberts
Patent Abstracts of Japan vol. 14, No. 383 (E-0966) 1990 & JP-A-02 140 028 (Sharp)
Electronics Letters, vol. 28, No. 3, Jan. 1992, Stevenage GB pp. 216-217.
Database INSPEC, IEE, London, GB Seumura et al pp. 433-436.
Tamburello Mario
Vanoli Stefano
Brooks L. P.
Negash Kinfe-Michael
Pirelli Cavi S.p.A.
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