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http://dx.doi.org/10.3807/KJOP.2006.17.2.159

Fabrication of an On System based on an Optical Delay line with Cylindrical PZT  

Park, Sung-Jin (College of Electronics and Information/Institute for Laser Engineering, Kyunghee University)
Kim, Young-Kwan (College of Electronics and Information/Institute for Laser Engineering, Kyunghee University)
Kim, Yong-Pyung (College of Electronics and Information/Institute for Laser Engineering, Kyunghee University)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.2, 2006 , pp. 159-164 More about this Journal
Abstract
We demonstrate a compact optical coherence tomography(OCT) system based on the optical fiber delay line controlled by a cylindrical piezo-electric transducer(PZT). An 18-m length of single mode fiber is wrapped under constant tension around a PZT. Approximately 134 windings are used. Wraps of the long length of fiber allow the small expansion of the PZT to be magnified to an optical path length delay of 0.78 m. The OCT system shows characteristics for 2-dimensional imaging, exhibiting 96.9dB of signal-to-noise ratio(SNR), $18.6{\pm}0.5\;{\mu}m$ of axial resolution, and $5\;{\mu}m$ of lateral resolution with samples.
Keywords
optical coherence tomography; piezoelectric transducer; optical delay line;
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