Accession Number:

ADD014629

Title:

Tapered Fiber Amplifier.

Descriptive Note:

Patent, Filed 31 Aug 88, patented 17 Jul 90,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

• Russell, Stephen D.
• Stamnitz, Timothy C.

Report Date:

1990-07-17

Pagination or Media Count:

6.0

Abstract:

A tapered optical fiber amplifier is designed to provide for long-distance, un-repeatered fiber optic communications. Two single-mode fiber portions are tapered to efficiently intensify and couple an information signal from a laser diode and a pump signal at a shorter wavelength into a fused, tapered single-mode fiber optic coupler. The concentrated information signal and concentrated pump signal are combined via the coupler which is coupled to a several-kilometer length of a relatively small core diametered single-mode fiber to create nonlinear optical effect stimulated Raman scattering SRS. The SRS causes Raman shift of the pump light into the small core diametered single-mode fiber length, thereby generating SRS to result in a signal amplification and an efficient extraction of the amplified signal via the tapered output fiber portion or pigtail. Patents. rrh

Descriptors:

• *PATENTS
• *OPTICAL PUMPING
• *AMPLIFIERS
• *FIBER OPTICS
• TRANSMISSION LINES
• TAPER
• NONLINEAR SYSTEMS
• RAMAN SPECTRA
• SCATTERING

Subject Categories:

• Fiber Optics and Integrated Optics
• Lasers and Masers
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE