Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2004-09-10
2008-08-26
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
C359S341410
Reexamination Certificate
active
07417790
ABSTRACT:
A looped WDM optical network comprises an optical loop with optical amplifiers (12,16) between the sections of the loop (11) and with ASE recirculation in the loop. At a point of the loop a laser beam is injected and allowed to circulate in the loop with the laser beam being centered around a λLINKwavelength where it is desired that a lasing peak be generated. This supplies high network strength in terms of section loss variations and greatly improves the OSNR of the WDM signal. High network survivability is also achievable.
REFERENCES:
patent: 6025941 (2000-02-01), Srivastava et al.
patent: 6388802 (2002-05-01), Allan
patent: 6421168 (2002-07-01), Allan et al.
patent: 6735391 (2004-05-01), Lee et al.
patent: 7019894 (2006-03-01), Stentz et al.
patent: 1 030 415 (2000-08-01), None
Saleheen HI: “Closed Cycle Lashing of ASE Noise in a WDM Ring Network.” Technical Digest. CLEO/Pacific Rim 2001. 4thPacific Rim Conference on Lasers and Electro-Optics, vol. 2, No. II, Jul. 15, 2001, pp. 558-559, XP002279117.
Xu L et al. “Suppression of Beating Noise of Narrow-Linewidth Erblum-Doped Fiber Ring Lasers by Use of a Semiconductor Optical Amplifier.” Optics Letters, Optical Society of America, Washington, US, vol. 28, No. 10, May 15, 2003, pp. 780-782, XP001166553. ISSN: 0148-9592.
Bogoni Antonella
D'Errico Antonio
Di Pasquale Fabrizio
Sacchi Giovanni
Coats & Bennett P.L.L.C.
Hellner Mark
Marconi Communications SpA
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