| 摘要 |
<p>An optical coupler comprises an optical tip having a small cross section. The coupler is tapered from a waveguide width to the small cross section tip. In one embodiment, the length of the taper is approximately 40 um long. The waveguide width is approximately 450 run wide, and the tip is approximately 150 x 250 nm wide. The tip couples to an optical fiber, which in one embodiment is approximately 4um wide. In a further embodiment, the waveguide tapers into a combination of multiple tips to provide a better overlap between a mode profile of the fiber and the coupler.</p> |
