Patent ID: 8670640
Filing Date: 2014-03-11
Classification: G02B,G03F

Abstract:
1. A method for applying a predetermined pattern to a distal end of a target optical fiber comprising the steps of: providing a masked optical fiber, wherein a distal end of the masked optical fiber is provided with an optical mask having a predetermined pattern, applying a layer of photoresist material to at least part of the target fiber, aligning the distal end of the masked optical fiber with respect to the target fiber provided with photoresist material, applying irradiation through the masked optical fiber to apply the predetermined pattern in at least part of the photoresist material on the target fiber, thereby providing a pattern onto the target fiber, the pattern having substantially the same shape as the predetermined pattern, and removing soluble photoresist material with a solvent, wherein, when the photoresist material is a positive photoresist material, the soluble photoresist material is photoresist material exposed to the irradiation, and when the photoresist material is a negative photoresist material, the soluble photoresist material is photoresist material not exposed to the irradiation.