| 摘要 |
<p>An optical switch comprises an optical input (902) and an optical output (904), the switch further comprising a wavelength selective switch element (912) for directing light of a selected wavelength between the input (902) and the optical output (904), wherein the switch element is tuneable to a plurality of different wavelengths. By having tuneable switch elements, the switch can be made having fewer elements and therefore more compact.</p> |
