| 摘要 |
<p>A refractive-index grating fabricated in an optical fiber (20) having a multilayer (23, 24) coating and a method for making refractive-index patterns such as gratings in optical fibers such that the mechanical properties of the original fiber are preserved. The patterns are written into the optical fiber by partially stripping away the outer coating (24) of the fiber, exposing the core (23) of the fiber through the remainder of the coating with an actinic radiation (26) to form the pattern in the photosensitive core (21) of the fiber, followed by recoating the fiber in the stripped area (28) to provide protection of the newly formed pattern from corruption and to preserve the mechanical properties of the fiber.</p> |
