| 摘要 |
A method for imparting a diffraction grating into the cladding layer and core layer of small diameter optical fibers consisting of (a) etching a section of an optical fiber to reduce the thickness of the cladding layer of the optical fiber, (b) coating the etched portion of the fiber with a photoresist, exposing the photoresist to produce the diffraction grating pattern using on-axis interferometry using a laser source (d) dissolving the non-exposed photoresist and (e) etching the diffraction grating pattern into the cladding layer and/or core of the optical fiber.
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