| 摘要 |
A method of front end preparation for efficient coupling of light into a fiber while preventing fiber damage from an incident beam, includes the steps of stripping an end of an outer cladding of the fiber. The step of stripping produces a stripped end of the fiber. The stripped end is then coated with a polymer to produce a polymer coating such that a length of a core of a multi-mode fiber (or an inner cladding of a single-mode double cladding fiber) is bare beyond the polymer coating. Thereby, an extended end of the core or inner cladding is left. For a portion of an incident beam that misses the core or inner cladding, such portion is allowed to diffract from the extended end, while leaving the fiber undamaged.
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