Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1997-12-04
2000-08-01
Hellner, Mark
Optical: systems and elements
Optical amplifier
Optical fiber
359124, H01S 300
Patent
active
060975342
ABSTRACT:
An optical amplifier system includes a branching filter for branching into respective wavelengths a wavelength-multiplexed incident light having wavelengths .lambda..sub.1 to .lambda..sub.n, which is inputted from an input port. N optical amplifier sections respectively amplify the branched lights of respective wavelengths. An optical multiplexer multiplexes the amplified lights having the wavelengths .lambda..sub.1 to .lambda..sub.n before outputting the light to an output port. An output control circuit sets the output level of the optical amplifier section to an arbitrary value. With this composition, the present invention is capable of increasing the optical output level per wavelength, independently of the wavelength multiplex number n, when a light signal having n wavelengths is to be amplified.
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patent: 5452116 (1995-09-01), Kirkby et al.
patent: 5675432 (1997-10-01), Kosaka
patent: 5889610 (1999-03-01), Fatehi et al.
K. Okamoto et al., "Silica-Based Planar Lightwave Circuits for WDM Systems", OFC '95 Technical Digest, ThB1, pp. 224-225.
K. Okamoto, et al., "Silica-Based Planar Lightwave Circuits for WDM Systems", OFC '95 Technical Digest, ThB1, pp. 224-225.
Ishii Satoshi
Michishita Yukio
Hellner Mark
NEC Corporation
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