| 摘要 |
<p>A wavelength selective 2 x 2 single mode fibre coupler has a weakly coupled coupling region (32) in which the cladding modes of the two fibres are coupled while the core modes remain uncoupled. A matched pair of core/cladding mode converters (33, 34) are located, one on one fibre (30) on one side of the coupling region, and the other on the other fibre (31) on the other side. <IMAGE></p> |
