Browsing by Author "J. Ali"

Now showing 1 - 6 of 6
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    ASK-to-PSK generation based on nonlinear microring resonators coupled to one MZI arm
    (2011) C. Teeka; S. Songmuang; R. Jomtarak; P.P. Yupapin; M.A. Jalil; I.S. Amiri; J. Ali; C. Teeka; Scientific Equipment Center, Faculty of Science and Technology, Suan Dusit Rajabhat University, Bangkok 10700, Thailand; email: chat_tee@dusit.ac.th
    We present a new concept of ASK-to-PSK generation based on nonlinear microring resonators coupled to one MZI arm by using OptiWave FDTD method. By microring resonator increase from one to three microring (SR to TR), we found that the amplitude shift keying (ASK) are increase exactly and the phase shift keying (PSK) is equal to ¹. © 2011 American Institute of Physics.
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    ASK-to-PSK generation based on nonlinear microring resonators coupled to one MZI arm
    (2011) C. Tanaram; C. Teeka; R. Jomtarak; P.P. Yupapin; M.A. Jalil; I.S. Amiri; J. Ali; C. Tanaram; Faculty of Science and Technology, Kasem Bundit University, Bangkok 10250, Thailand; email: tchanapk@gmail.com
    We present a new concept of ASK-to-PSK generation based on nonlinear microring resonators coupled to one MZI arm by using OptiWave FDTD method. By microring resonator increase from one to three microring (SR to TR), we found that the amplitude shift keying (ASK) are increase exactly and the phase shift keying (PSK) is equal to ¹.
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    Single electron-hole pair generation using dark-bright solitons conversion control
    (2011) R. Jomtarak; C. Teeka; P.P. Yupapin; J. Ali; R. Jomtarak; Advanced Research Center for Photonics, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand; email: rangsan_jom@dusit.ac.th
    In this paper, we present the new concept of single electron-hole pair generation by using dark-bright solitons conversion control based on microring resonator coupled to one arm MZI. By using some suitable parameters and found that the single electron-hole pair are seen, therefore, the single electron-hole pair generate can be storage and controll within the design system. © 2011 American Institute of Physics.
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    Single electron-hole pair generation using dark-bright solitons conversion control
    (2011) S. Punthawanunt; R. Jomtarak; C. Teeka; P.P. Yupapin; J. Ali; S. Punthawanunt; Faculty of Science and Technology, Kasem Bundit University, Bangkok 10250, Thailand; email: suphanchai@kbu.ac.th
    In this paper, we present the new concept of single electron-hole pair generation by using dark-bright solitons conversion control based on microring resonator coupled to one arm MZI. By using some suitable parameters and found that the single electron-hole pair are seen, therefore, the single electron-hole pair generate can be storage and controll within the design system.
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    Single electron-hole pair generation using dark-bright solitons conversion control
    (2010) R. Jomtarak; C. Teeka; P.P. Yupapin; J. Ali; R. Jomtarak; Advanced Research Center for Photonics, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand; email: rangsan_jom@dusit.ac.th
    Recently, the electron-hole pair generated in 1.06-_m separate-absorber-avalanche (multiplier) InP-based devices [1], SiGe/Si planar waveguides [2] fabricated with a Ge concentration ranging from 2% to 6% and different thicknesses ranging from 200 nm to 2 _m, generating electron-hole pairs with a 100 fs laser pulse emitted at 810 nm, and monitoring the free-carrier absorption transient with a c.w. probe beam at 1.55 _m, bipolar transistors [3], CMOS process [4], InAs-GaSb superlattice (SL) photodiodes [5], resonant microcavity [6], A cavity-QED using a single InAs quantum dot and a high-Q whispering gallery mode [7]. ©2010 IEEE.
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    SOLITON SPIN in AN ADD-DROP OPTICAL FILTER for LONG DISTANCE SPIN TRANSPORT
    (World Scientific Publishing Co. Pte Ltd, 2012) C. Teeka; M.S. Aziz; S. Pipatsart; K. Srinuanjan; J. Ali; P.P. Yupapin
    A new concept of an optical spin generation using bright and dark soliton conversion behaviors within a modified optical add-drop filters known as a PANDA ring resonator is proposed. The orthogonal solitons can be formed randomly within the system and detected simultaneously at the output ports. Under the resonant condition, the orthogonal solitons corresponding to the left-hand and right-hand solitons (photons) can be generated. Whenever a photon is absorbed by an object, an angular momentum of either + _ or - _ is imparted to the object, in which two possible spin states known as soliton spins are exhibited. Many soliton spins, i.e., many particles, dynamic spin and long distance spin transport using the proposed design are also discussed. © 2012 World Scientific Publishing Company.