Optical amplification in the 850 nm window

Details Optical amplification in the 850 nm window Optical amplification in the 850 nm window

2004-12-15

2010-06-22

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Optical fiber

C359S341100

Reexamination Certificate

active

07742224

ABSTRACT:
Systems and methods are disclosed for amplifying optical signals in the 850 nm window. In one embodiment, an amplifier system includes a span of Thulium-doped fiber (TDF) and two pump systems. The TDF span receives and transports optical signals in the 850 nm window. A first pump system pumps the TDF span at a wavelength in the range of 1390 nm to 1430 nm, and a second pump system pumps the TDF span at a wavelength in the range of 670 nm to 720 nm. The pumping generates gain in the optical signals in the 850 nm window. In another embodiment, the amplifier system includes a single pump system. The pump system pumps the TDF span at a wavelength in the range of 1390 nm to 1430 nm to generate gain in the 850 nm window.

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Dye, S. P., “Fully Engineered 800-nm thulium-doped fluoride-fiber amplifier,” WD4 9:30 a.m., OFC '95 Technical Digest, p. 110.

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