Connection loss reduction by thermally-diffused expanded core fiber

Author

Haibara, Tadashi ; Nakashima, Tsuyoshi ; Matsumoto, Michito ; Hanafusa, Hiroaki

Author_Institution

NTT Transmission Syst. Lab., Ibaraki, Japan

Volume

3

Issue

4

fYear

1991

fDate

4/1/1991 12:00:00 AM

Firstpage

348

Lastpage

350

Abstract

Connection loss reduction in ten fiber connectors prepared by the thermally diffused expanded core (TEC) method has been confirmed. The mode field diameters (MFDs) of conventional single mode (SM) fibers were expanded from 9.8 to 13 mu m by thermal treatment considering the influence of loss increase due to fiber axis misalignment. An average connection loss of 0.15 dB for 4-SM-fiber connectors was realized, which was improved by 0.22 dB compared with previous value of 0.37 dB without thermal treatment. The TEC method promises to reduce the coupling loss, which is caused by lateral offset of multifiber connectors, fiber/LD modules, and fiber/waveguide device modules.<>

Keywords

fibre optics; optical couplers; optical losses; optical workshop techniques; 0.15 dB; 9.8 to 13 micron; connection loss; fiber axis misalignment; fiber connectors; fibre coupling loss reduction; lateral offset; mode field diameters; multifiber connectors; single mode optical fibres; thermal treatment; thermally-diffused expanded core fiber; Connectors; Laboratories; Optical fiber devices; Optical fiber losses; Optical fiber networks; Optical fibers; Optical losses; Samarium; Silicon compounds; Thermal expansion;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.82108

Filename

82108