| 摘要 |
<p>A multicore optical coupler is fabricated by fusing a bundle of single mode or multi-mode fibers. Distortion of the outermost ring of cores is prevented by filling the cusps between fibers in the outermost layer using an additional layer of fibers or inserting the bundle into a capillary tube, or to remove interstitial space between fibers by using noncircular fibers. In the additional layer of fibers, the fibers have no cores or if they have a core it is not used for transmission of signals.</p> |
