A kind of photonic crystal fiber grinding and polishing process method
A photonic crystal fiber, photonic crystal technology, applied in the coupling of optical waveguides, etc., can solve the problems of optical performance fluctuation of pigtails, poor temperature stability, etc., and achieve good temperature stability, high polarization crosstalk of pigtails, and consistent process. good effect
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[0042] The method according to the invention is based on the following basic principles:
[0043] The main component of photonic crystal fiber is silicon dioxide, which is a hard and brittle material. During processing, the material removal mechanism is generally brittle fracture. If proper measures are not taken, a large number of micro-cracks will inevitably occur on the processed end face during processing (mainly at the edge of the air hole of the photonic crystal fiber). Optical fiber end face grinding, that is, grinding and polishing of brittle materials. During processing, as long as the cutting depth of the abrasive grain size is less than a certain critical value related to the performance of the processed material, the brittle material will be removed by plastic fracture, so that a fiber end face with a higher surface roughness can be obtained.
[0044] The microindentation method is used to establish the conditions for the way that brittleness is transformed into plasti...
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