Polarization modulation of light in an optical waveguide under lateral compression

Котов, О. И.; Khlybov, A. V.; Лиокумович, Л. Б.; Markov, S. I.; Medvedev, A. V.; Rukavishnikov, V. A.; Боровков, А. И.; Shevchenko, D.

doi:10.1134/s1063784206110168

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Although the technique enabled time-averaged smoothing within a short time without post-processing, speckle control in MMFs has not been fully studied. Furthermore, in contrast to the elastooptic polarization modulation in an SMF under lateral compression [9,10], detailed analyses of various types of MMFs under radial stress by the PZT have been very scarce, especially in terms of parametric and statistical studies.…”

Section: Introductionmentioning

confidence: 99%

Acousto-optic control of speckle contrast in multimode fibers with a cylindrical piezoelectric transducer oscillating in the radial direction

Ha¹,

Lee²,

Jung³

et al. 2009

Opt. Express

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Abstract:We report efficient acousto-optic control of speckle contrast at the output of multimode fibers (MMFs) using a cylindrical piezoelectric transducer (PZT) vibrating in the radial direction. With appropriate packaging of an MMF around the PZT, periodic stretching and subsequent intensity modulation were achieved over the wound fiber to result in timeaveraged smoothing of the output within a short time. It was experimentally confirmed that light passed through the vibrating PZT-fiber assembly maintains the virtually partial coherence irrespective of the guide length and power splitting. Real-time vibration-off/on movies were presented, and their single-frame excerpts were analyzed. Electron. Lett. 15(23), 755-756 (1979). 13. E. G. Rawson, J. W. Goodman, and R. E. Norton, "Analysis and measurement of the modal-noise probability distribution for a step-index optical fiber," Opt. Lett. 5(8), 357-358 (1980). 14. D. U. Kim, S. C. Bae, J. Kim, T.-Y. Kim, C.-S. Park, and K. Oh, "Hard polymer cladding fiber (HPCF) links for high-speed short reach 1×4 passive optical network (PON) based on all-HPCF compatible fused taper power splitter," IEEE Photon. ©2009 Optical Society of America

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Section: Introductionmentioning

confidence: 99%

Acousto-optic control of speckle contrast in multimode fibers with a cylindrical piezoelectric transducer oscillating in the radial direction

Ha¹,

Lee²,

Jung³

et al. 2009

Opt. Express

View full text Add to dashboard Cite

show abstract

Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity

et al. 2012

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We report significant speckle reduction in a laser illumination system using a vibrating multimode optical fiber bundle. The optical fiber bundle was illuminated by two independent lasers simultaneously. The beams from both lasers were first expanded and collimated and were further divided into multiple beams to illuminate the fiber optic bundle with normal and oblique incidence. Static diffusers were also placed at the input and output faces of the fiber bundle, thus introducing the spatial as well as angular diversity of illumination. Experiments were carried out both in free space and in imaging geometry configuration. Standard deviation, speckle contrast and signal-to-noise ratio of the images were computed, and the results were compared with those of white light illumination. Speckle contrast close to that of white light was obtained using a vibrating fiber bundle with combined temporal, spatial, and angular diversities of the illumination.

show abstract

Polarization modulation of light in an optical waveguide under lateral compression

Cited by 2 publications

References 8 publications

Acousto-optic control of speckle contrast in multimode fibers with a cylindrical piezoelectric transducer oscillating in the radial direction

Acousto-optic control of speckle contrast in multimode fibers with a cylindrical piezoelectric transducer oscillating in the radial direction

Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity

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