Experimental investigation on coupling efficiency between semiconductor laser diodes and single-mode fibres by an etching technique |
| |
Authors: | H Ghafoori-Shiraz |
| |
Institution: | (1) Department of Electronic and Electrical Engineering, The University of Birmingham, PO Box 363, B15 2TT Birmingham, UK |
| |
Abstract: | The coupling efficiency between semiconductor laser diodes (LDs) and single-mode fibres (SMFs) can be improved by matching their respective modes. This may be achieved by constructing a conical microlens on the end of an Al-coated vapour-axial deposition (VAD) SMF. A simple process to etch an SMF end selectively to produce such a conical microlens is described.A minimum coupling loss of 3 dB has been obtained using 1.3- m InGaAsP/InP buried heterostructure LDs. Experimental results on coupling efficiency and loss penalty due to lateral misalignment are also reported. This conical microlens is easy to manufacture and reproduce. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|