| 摘要 |
PCT No. PCT/IT94/00218 Sec. 371 Date Sep. 5, 1997 Sec. 102(e) Date Sep. 5, 1997 PCT Filed Dec. 28, 1994 PCT Pub. No. WO96/20519 PCT Pub. Date Jul. 4, 1996A coupling arrangement for non-axial transfer of light power between a multi-mode light source (LS), having a substantially circular emission with a divergence angle as, and a multi-mode optical fiber (FF) with a cross section Ac, through a length of an intermediate feeding multi-mode optical fiber (IF) having an end with cross section area Af coupled with said light source (LS) and one portion fused to said optical fiber (FF). Said feeding fiber (IF) has a progressively tapered portion and is fused to said multi-mode optical fiber (FF) at a region of the tapered fiber, and in that the relationship between the acceptance angle alpha f of the feeding fiber (IF) and the emission angle alpha s of the light source (LS) is expressed by: alpha f=k . alpha s where k is a positive constant greater than 1.
|
