Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1997-06-12
1998-09-15
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359337, G02B 626, H04B 314
Patent
active
058087893
ABSTRACT:
An optically amplifying transmission system available for wider signal bands includes an optical transmission line 42 divided into two sections 42a and 42b, optically amplifying repeaters 48a having 7 m-long erbium-doped optical fibers to repeat transmission optical fibers 46a in the section 42a, and optically amplifying repeaters 48b having 10.8 m-long erbium-doped optical fibers to repeat transmission optical fibers 46b in the section 42b. The transmission optical fibers 46a an 46b are optical fibers absolutely identical in construction and length.
REFERENCES:
patent: 5039199 (1991-08-01), Mollenauer et al.
patent: 5058974 (1991-10-01), Mollenauer
patent: 5117303 (1992-05-01), Desurvire et al.
patent: 5253104 (1993-10-01), Delavaux
patent: 5430572 (1995-07-01), DiGiovanni et al.
Erbium-Doped Fiber Amplifiers by Desurvire, E.; John Wiley & Sons Pub., 1994, pp. 480-487.
Giles et al, IEEE Photonics Tech. Lett., vol. 2, #12, Dec. 1990, pp. 866-868.
Akiba Shigeyuki
Edagawa Noboru
Morita Itsuro
Suzuki Masatoshi
Taga Hidenori
Kokusai Denshin Denwa Kabushiki Kaisha
Moskowitz Nelson
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