Raman amplifier with gain control

Details Raman amplifier with gain control Raman amplifier with gain control

2006-06-20

2006-06-20

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Raman or brillouin process

Reexamination Certificate

active

07064887

ABSTRACT:
A two-stage Raman amplifier provides a gain control compensating for span loss variations and changing channel loading. A first amplifier stage (S1) has a first amplifying medium (F1) and a first pump light source (P1, P2, Pn), which is controlled and adjusted by a control unit (CU) to compensate for span loss variations. A second amplifier stage (S2) has a second amplifying medium (F2) and a second pump light source (P′1, P′2, P′n), which is controlled and adjusted by the control unit (CU) to balance changing channel loading.

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patent: 6542287 (2003-04-01), Ye et al.
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patent: 1 018 666 (2000-07-01), None
patent: 2 383 209 (2003-06-01), None
patent: WO 00/49721 (2000-08-01), None
Motoshima K et al: “A Channel-Number Insensitive Erbium-Doped Fiber Amplifier With Automatic Gain and Power Regulation Function,” Journal of Lightwave Technology, IEEE. New York, US, vol. 19, No. 11, Nov. 2001, pp. 1759-1761, XP001114842.

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