Accession Number:

ADA071874

Title:

Investigation of a Multimode Fiber Optic Coupler.

Descriptive Note:

Final rept. 1 Apr-31 Dec 78,

Corporate Author:

FLORIDA INST OF TECH MELBOURNE DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s):

• Drake,Marvin D.

Report Date:

1979-01-01

Pagination or Media Count:

50.0

Abstract:

The operation of a three-fiber multimode fiber optic coupler was experimentally investigated for the dependence of the forward coupling ratio upon surface conditions of the aligning rods, stress on the fibers, length of the aligning rods, mode distribution in the main fiber, make of fiber, and length of input fiber. An explanation of the discrepancies between theory and experiment was also sought. The forward coupling was found to increase for gross perturbations of the surface of the alignment rods, increase for increased stress on the fibers, increase with length of the aligning rods, increase with increasing number of higher order modes, depend strongly on type of fiber, and decrease with input fiber length. Further, the directivity of the coupler was increased greatly by reducing reflections from the ends of the fibers. Author

Descriptors:

• *FIBER OPTICS
• *COUPLERS
• COUPLING(INTERACTION)
• STRESS ANALYSIS
• ALIGNMENT
• FIBER OPTICS TRANSMISSION LINES
• THROUGHPUT
• MULTIMODE
• OPTICAL CIRCUITS

Subject Categories:

• Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE