Optical fiber amplifier

Details Optical fiber amplifier Optical fiber amplifier

1990-06-21

1992-08-04

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359345, 372 6, H01S 300, H01S 3091, G02B 626

Patent

active

051364204

ABSTRACT:
An optical fiber amplifier is disclosed wherein pumping light and signal light are introduced into an optical fiber doped with a rare-earth element to directly amplify the signal light. The optical fiber amplifier of the invention comprises means constituted from a reflecting film, a fiber loop or the like for causing pumping light to pass by a plurality of times in the doped fiber. Due to the provision of the reflective film or the fiber loop, pumping light can be utilized efficiently, and the amplification factor of the optical fiber amplifier is improved.

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patent: 5048026 (1991-09-01), Shaw et al.
Miller, C. A.; "Fibre Lasers and Amplifiers for Telecommunications", Oct. 28, 1987 Mtg in Va. on Tunable Solid State Lasers; Opt. Soc. Am. pp. 189-198.
Electronics Letters, vol. 24, No. 10, May 12, 1988, "All-Fibre, Diode Pumped Recirculating-Ring Delay Line", P. R. Morkel, pp. 608-609, Stevenage, Great Britain.

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