公开(公告)号：JP2001010838A

公开(公告)日：2001-01-16

申请号：JP2000150234

申请日：2000-05-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DIGIOVANNI DAVID JOHN ,  FISHTEYN MIKHAIL

IPC: G02B6/04 ,  C03B37/012 ,  G02B6/28 ,  G02B6/287 ,  H01S3/06 ,  H01S3/10

Abstract: PROBLEM TO BE SOLVED: To obtain a fused fiber bundle having high efficiency and high strength and free from gap on the cross-section by bundling a plurality of optical fibers, adding a glass precursor material optionally containing colloidal particles and heating and melting the product after drying. SOLUTION: Plural multi-mode fibers 21 each having a semiconductor emitter source 29 at the end are bundled at the bundling region 22 and arranged in closely packed state preferably contacting the inside fiber with the maximum number of surrounding fibers. A glass precursor material is added to the fibers in the bundling of the fibers 21. The glass precursor is composed mainly of vitreous silica and contains colloidal particles when the fiber has circular cross- section or is free from particles when the fibers have flat planes opposite to each other. The bundle is compacted to the minimum diameter 24 via a tapered region 23 and welded by heating to form a clad pump fiber 25.