Optical transmitter including rare earth-doped fiber

Details Optical transmitter including rare earth-doped fiber Optical transmitter including rare earth-doped fiber

1992-09-15

1994-01-04

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359281, 359337, 372 6, 372106, H01S 314, G02B 600, G02F 109

Patent

active

052765490

ABSTRACT:
A high-output optical transmitter including a rare earth-doped fiber. The optical transmitter includes a signal light source for outputting signal light having a first predetermined plane of polarization and a pumping light source for outputting pumping light having a second predetermined plane of polarization. The plane of polarization of the signal light from the signal light source is rotated 45 degrees by a Faraday rotator such that the plane of polarization of the signal light output from the Faraday rotator and the pumping light are perpendicular to each other. The signal light from the Faraday rotator and the pumping light from the pumping light source are polarization-coupled by a polarization coupler and the combined light is introduced into the rare earth-doped fiber.

REFERENCES:
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patent: 4702557 (1987-10-01), Beckman et al.
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patent: 4991938 (1991-02-01), Buhren et al.
patent: 5005175 (1991-04-01), Desurvire et al.
patent: 5048030 (1991-09-01), Hiro et al.
Matsumoto, T.; Electronics Letters, vol. 15, #20, Sep. 27, 1979, pp. 625-627.
Krasinski et al; IEEE J. Q. E., vol. 26, #5, May 1990, pp. 950-958.

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