Erbium-doped fiber amplifier and an optical fiber communication

Details Erbium-doped fiber amplifier and an optical fiber communication Erbium-doped fiber amplifier and an optical fiber communication

1996-08-05

1997-04-22

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359134, 359345, 372 6, G02B 628, H01S 330, H01S 3094

Patent

active

056233620

ABSTRACT:
The erbium-doped fiber amplifier comprises: a first erbium-doped optical fiber pumped by 0.98 .mu.m band light and amplifying the signal light; a first pump light source for producing the 0.98 .mu.m band light; a first optical coupler for coupling the 0.98 .mu.m band light with the signal light at an input portion of the first optical fiber; a second erbium-doped optical fiber pumped by 1.48 .mu.m band light and amplifying the signal light; a second pump light source for producing the 1.48 .mu.m band light; and a second optical coupler for coupling the 1.48 .mu.m band light with the signal light at an output portion of the second optical fiber; wherein a pump light isolator is installed between the first optical fiber and the second optical fiber for blocking the passing of the 1.48 .mu.m band light from the second optical fiber to the first optical fiber while allowing the passing of the signal light.

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Sugaza et al, OAA paper FC3, Jun. 16, 1995, (Davos, Switzerland).

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