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Author: search.filters.author.Chaiwong, Khomyuth

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    3D imaging generated by micro-optical device system with distortion improvement
    (2015-01-01)
    Tamee, Kreangsak
    ;
    Chaiwong, Khomyuth
    ;
    Yothapakdee, Kriengsak
    ;
    Yupapin, Preecha Promphan
    This paper presents the use of a micro-optical conjugate mirror for 3D pixel construction, which can be used to construct and reconstruct the 3D pixel using the microoptical device. A conjugate mirror is formed by a semiconductor device, which is a tiny nonlinear optical device. By using the common laser as the input light beam, the object and reference beams can be formed by the reflected light beams from the PANDA ring through and drop ports. The interference between these two beams forms the 3D pixel by the four-wave mixing behavior coupled by the two nonlinear side rings. The 3D pixel is seen in the form of whispering gallery modes (WGMs) at the PANDA ring center, which is the real image, while the reconstruction images can also be obtained via the PANDA ring output port. The simulated results and graphic designs are obtained by using Optiwave program. This is useful for real 3D image display applications.
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    Fringe patterns generated by micro-optical sensors for pattern recognition
    (2015-01-01)
    Tamee, Kreangsak
    ;
    Chaiwong, Khomyuth
    ;
    Yothapakdee, Kriengsak
    ;
    Yupapin, Preecha P.
    We present a new result of pattern recognition generation scheme using a small-scale optical muscle sensing system, which consisted of an optical add-drop filter incorporating two nonlinear optical side ring resonators. When light from laser source enters into the system, the device is stimulated by an external physical parameter that introduces a change in the phase of light propagation within the sensing device, which can be formed by the interference fringe patterns. Results obtained have shown that the fringe patterns can be used to form the relationship between signal patterns and fringe pattern recognitions.
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    Muscle sensor model using small scale optical device for pattern recognitions
    (2013-11-04)
    Tamee, Kreangsak
    ;
    Chaiwong, Khomyuth
    ;
    Yothapakdee, Kriengsak
    ;
    Yupapin, Preecha P.
    A new sensor system for measuring contraction and relaxation of muscles by using a PANDA ring resonator is proposed. The small scale optical device is designed and configured to perform the coupling effects between the changes in optical device phase shift and human facial muscle movement, which can be used to form the relationship between optical phase shift and muscle movement. By using the Optiwave and MATLAB programs, the results obtained have shown that the measurement of the contraction and relaxation of muscles can be obtained after the muscle movements, in which the unique pattern of individual muscle movement from facial expression can be established. The obtained simulation results, that is, interference signal patterns, can be used to form the various pattern recognitions, which are useful for the human machine interface and the human computer interface application and discussed in detail. © 2013 Kreangsak Tamee et al.