| 摘要 |
<p>A method of forming a multiport optical fibre coupler in which a bundle of seven optical fibres are located in close-packed hexagonal array within a capillary tube and twisted. An optical source is coupled to an outer fibre. A fused, tapered coupler is formed, the tapering being stopped when the minimum of optical power outputs is first maximised. This provides a 6x7 optical fibre coupler. Also disclosed is a 7x7 optical fibre coupler formed by fusing the coupler during formation sufficiently to provide that the maximum insertion loss through the device between any input and output is minimised.</p> |
