MANUFACTURING METHOD OF OPTICAL FIBER WITH PROCESSED TIP, TIP PROCESSING APPARATUS FOR OPTICAL FIBER, METHOD OF LIQUID LEVEL DETECTION, AND OPTICAL FIBER WITH PROCESSED TIP

摘要

PROBLEM TO BE SOLVED: To provide a method of detecting a liquid level of an etching liquid as accurately as possible and enable precise control of depth.;SOLUTION: In this manufacturing method of an optical fiber with processed tip, a tip 3a of an optic fiber 3 is processed by wet etching. In the manufacturing method, the tip 3a of the optical fiber 3 is moved towards a liquid face 2a of an etching liquid 2, and during the movement, a light detecting part 7 detects reflected light of an incident light emitted from the other end of the optical fiber 3 that reflected on the tip of the optical fiber. Then, based on a change of the reflected light that is detected, the level of the liquid face of the etching liquid is detected. Further, based on the level of the liquid face that is detected, the tip 3a of the optical fiber is positioned at a target depth from the liquid face 2a of the etching liquid 2.;COPYRIGHT: (C)2012,JPO&INPIT