微型三次元量測儀：自動光纖耦合

Micro Coordinate Measuring Machine： Automatic Fiber Coupling

游舒凱(Shu-Kai You)

指導教授 ： 吳乾埼

淡江大學/工學院/機械與機電工程學系碩士班/碩士(2013年)

https://doi.org/10.6846/TKU.2013.01154

摘要

介尺度微型三次元量測乃當前全球量測技術瓶頸，關鍵在探針感測解析度無法突破。本研究團隊針對此一難題提出光纖探針式感測技術，該技術可大幅縮短探針感測之預行程，突破當前量測技術瓶頸。然而，該方法須將光源正確耦合進入光纖探針中方可進行量測，因此耦光實為光纖探針式微型三次元量測儀的關鍵技術。
本研究提出一種自動化光纖耦合技術，可應用於光纖探針式微型三次元量測儀之建構，自動化光纖耦合降低微型三次元量測儀研究中光源調校的時間以及提高光纖耦合耦光效率。
本自動化光纖耦合系統採用將633 nm雷射與單模光纖，光纖耦合使用預判式尋光對位方法進行自動耦合。實驗結果耦光效率達50 %（3 dB），耦合時間可縮短為2分鐘。

關鍵字

光纖耦合 ； 爬山式 ； 耦合效率

並列摘要

The meso-scale coordinate measurement technology is the bottleneck for worldwide measurement technologies. The key point relies on the fact that the resolution of the probing sensor cannot be broken. Our laboratory proposed a novel sensing technique with the optical fiber probe for overcoming the technology bottleneck. However, the laser source must be accurately coupled into the fiber probe in order for the measurement. Thus, the fiber coupling becomes a great limit to the micro coordinate measuring machine（micro-CMM）for its applications.
This study proposes an automatic fiber coupling technique. The technique can be applied to the construction of a micro-CMM. Such an automatic fiber coupling technique can reduce the coupling time and improve the coupling efficiency fiber coupling for a micro-CMM.
The automatic fiber system used a laser source with a wavelength of 633 nm, and a single-mode fiber. We used the method with pre-determined searching direction, which is based on the direction derivative and the hill-climbing searching. Experimental results demonstrated that the coupling efficiency of our automatic fiber coupling technique can attain 50 % (3 dB), and the coupling time can be shorter than 2 min.

並列關鍵字

Fiber Coupling ； Hill-climbing ； Coupling efficiency

參考文獻

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