Optical fiber amplifier for amplifying signal lights propagating

Details Optical fiber amplifier for amplifying signal lights propagating Optical fiber amplifier for amplifying signal lights propagating

1998-10-28

2000-07-18

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359173, H01S 0300

Patent

active

060915420

ABSTRACT:
An optical amplifier for amplifying signal lights propagating in two opposite directions comprises a 1st and a 2nd transmitters for generating a 1st and a 2nd signal lights, respectively, a 1st and a 2nd receivers for receiving the 1st and the 2nd signal lights, respectively, a fiber amplifier for amplifying the signal lights, a 1st optical device including a 1st and a 2nd wavelength division multiplexing(WDM) couplers, a 1st and a 2nd isolators, a 2nd optical device including a 3rd and a 4th WDM couplers, a 3rd and a 4th isolators and a pair of light sources for pumping the fiber amplifier. In the optical amplifier, the 1st WDM coupler selectively transmits the 1st signal light from the 1st transmitter to the fiber amplifier via the 1st isolator and the 2nd WDM coupler, and the 2nd WDM coupler selectively transmits the 2nd signal light from the 2nd transmitter to the 2nd receiver via the 2nd isolator and the 1st WDM coupler. The 3rd WDM coupler selectively transmits the 1st signal light from the fiber amplifier to the 1st receiver via the 3rd isolator and the 4th WDM coupler, and the 4th WDM coupler selectively transmits the 2nd signal light from the 2nd transmitter to the fiber amplifier via the 4th isolator and the 3rd WDM coupler.

REFERENCES:
patent: 5365368 (1994-11-01), Hsu et al.
patent: 5452124 (1995-09-01), Baker
patent: 5801858 (1998-09-01), Roberts et al.
patent: 5815308 (1998-09-01), Kim et al.

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