Speckle Reduction in Near-field Image of Multimode Fiber with a Piezoelectric Transducer
Journal of the Optical Society of Korea, Vol. 12, Issue 3, pp. 126-130 (2008)
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Abstract
We propose and experimentally demonstrate an effective method to reduce near-field speckle noise at the output of a 50 <TEX>${\mu}m$</TEX> graded index multimode fiber using a short cylindrical piezoelectric transducer(PZT) vibrating in the radial direction. The fiber was coiled as tightly as possible around the mandrel of the PZT and a periodic stretching effect was caused by the radial oscillations of the actuator. The output of the optical fiber using the He-Ne laser source was intensively observed by a CCD camera. By counting all the pixels corresponding to relative intensity graded into 256 levels in the selected area and by calculating standard deviation and mean value of the intensity, we could measure the speckle contrast and vibration effect quantitatively with reduction ratio of pixels and line profile of the illuminated region. It was clearly observed that the characteristics of the speckle pattern in the vibration-on state were significantly improved over that of the vibration-off state due to time-averaged smoothing.
© 2008 Optical Society of Korea
OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(100.1160) Image processing : Analog optical image processing
(110.1650) Imaging systems : Coherence imaging
(110.2350) Imaging systems : Fiber optics imaging
(110.6150) Imaging systems : Speckle imaging
History
Original Manuscript: August 1, 2008
Revised Manuscript: September 10, 2008
Manuscript Accepted: September 12, 2008
Published: September 25, 2008
Citation
Woo-Sung Ha, Se-Jin Lee, Kyung-Hwan Oh, Yong-Min Jung, and Jun-Ki Kim, "Speckle Reduction in Near-field Image of Multimode Fiber with a Piezoelectric Transducer," J. Opt. Soc. Korea 12, 126-130 (2008)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-12-3-126
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References
- K.-I. Sato and K. Asatani, "Speckle Noise Reduction in Fiber Optic Analog Video Transmission Using Semiconductor Laser Diodes," IEEE Trans. Commun., vol. 29, no. 7, pp. 1017-1024, 1981 [CrossRef]
- D. J. Anderson, R. D. Morgan, D. R. McCluskey, J. D. C. Jones, W. J. Easson, and C. A. Greated, "An optical fibre delivery system for pulsed laser particle image velocimetry illumination," Meas. Sci . Technol., vol. 6, pp. 809-1814, 1995 [CrossRef]
- L. Wang, T. Tschudi, T. Halldorsson, and P. R. Petursson,"Speckle reduction in laser projection systems by diffractive optical elements," Appl. Opt., vol. 37, no. 10, pp. 1770-1775, 1998 [CrossRef]
- J. I. Trisnadi,"Hadamard speckle contrast reduction," Opt. Lett., vol. 29, no. 1, pp. 11-13, 2004 [CrossRef]
- L. I. Ardasheva, N. D. Kundikova, M. O. Sadykova, N. R. Sadykov, and V. E. Chernyakov, "Speckle mode rotation in a few mode optical fiber in a longitudinal magnetic field," Opt. Spectrosc., vol. 95, pp. 645-651, 2003 [CrossRef]
- S. A. Kingsley and D. E. N. Davies, "Multimode optical fibre phase modulators and discriminators: I-Theory," Electron. Lett., vol. 14, no. 11, pp. 322-325, 1978 [CrossRef]
- P. J. Kajenski, P. L. Fuhr, and D. R. Huston, "Mode Coupling and Phase Modulation in Vibrating Waveguides," IEEE J. Lightwave Technol ., vol. 10, no. 9, pp. 1297-1301, 1992 [CrossRef]
- W. J. Choi, J. Na, S. Y. Ryu, B. H. Lee, and D.-S. Ko, "Realization of 3-D Topographic and Tomograpic Images with Ultrahigh-resolution Full-field Optical Coherence Tomography," J. Opt. Soc. Korea, vol. 11, no. 1, pp. 18-25, 2007
- A. P. Povilus, S. E. Olson, R. R. Mhaskar, B.-K. Teo, J. R. Guest, and G. Raithel, "Time averaging of multimode optical fiber output for a magneto-optical trap," J. Opt. Soc. Am. B, vol. 22, no. 2, pp. 311-314, 2005 [CrossRef]
- J. O. Kim, K. K. Hwang, and H. G. Jeong, "Radial vibration characteristics of piezoelectric cylindrical transducers," J. Sound Vib., vol. 276, pp. 1135-1144, 2004 [CrossRef]
- C.-H. Lee, Y. Kang, Y. Sung, and J. Noh, "Measurement of Spatial Coherence Function of Laser Beam by using a Sagnac Interferometer,” J. Opt. Soc. Korea, vol. 11, no. 2, pp. 71-75, 2007
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