Accession Number:

ADD014358

Title:

All-Fiber SFPM (Stimulated Four Photon Mixing) Amplifier.

Descriptive Note:

Patent, Filed 31 Aug 88, patented 19 Sep 89,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

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

Report Date:

1989-09-19

Pagination or Media Count:

7.0

Abstract:

An integrated fiber device provides optical signal amplification to 1 provide for increased distances between undersea repeaters andor optical regeneration nodes in fiber optic transmission systems, or 2 support an increased number of multiple users on an optical data bus network or multiple parallel signal processing channels in an optical processorcomputer. In the latter case a greater number of divisions of the signal can occur before the divided signal amplitude falls below the threshold needed for processing or detection. A combination of fiber components is incorporated that include 2 optically tapered portions for conditioning of 2 input laser beams to a wavelength selective single-mode coupler used to combine the concentrated information signal and concentrated pump wave, and one of whose output ports is then optically coupled to a predetermined length of single-mode fiber. The fibers optogeometric parameters are especially designed for intrinsic phase-matching to effect pump wave frequency conversion and signal amplification by the nonlinear optical SFPM process. The amplified signal light is coupled out of the especially designed SFPM fiber by a mode-field conditioning device enabling beam expansion, such that the output core diameter of the mode-field conditioner equals the core diameter of the single-mode fiber used in the transmission link. An important aspect of this patent is that it can be configured for field andor undersea installation. edc

Descriptors:

• *AMPLIFIERS
• *FIBER OPTICS
• *FIBER OPTICS
• *OPTICAL PROCESSING
• *PATENTS
• AMPLIFICATION
• BUS CONDUCTORS
• COMPUTERS
• CORES
• TRANSMISSION LINES
• DETECTION
• DIAMETERS
• EXPANSION
• FIBERS
• FREQUENCY CONVERSION
• INTEGRATED SYSTEMS
• LIGHT
• MIXING
• NETWORKS
• NODES
• OPTICAL DATA
• OPTICAL EQUIPMENT
• OPTICAL PROPERTIES
• OPTICS
• OUTPUT
• PARALLEL PROCESSING
• PHOTONS
• PUMPS
• REGENERATION(ELECTRONICS)
• REPEATERS
• SIGNAL PROCESSING
• STIMULATION(GENERAL)
• UNDERWATER
• WAVES

Subject Categories:

• Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE