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Rabi oscillation generation in the microring resonator system with double-series ring resonators

Optoelectronics Letters 2015年第5期11卷 342-347页

作者： Ahmad Fakhrurrazi Ahmad Noorden Kashif Chaudhary Mahdi Bahadoran muhammad safwan aziz muhammad Arif Jalil Ong Chee Tiong Jalil Ali Preecha Yupapin Institute of Advance Photonics Science Nanotechnology Research AllianceUniversiti Teknologi Malaysia Department of Mathematics Universiti Teknologi Malaysia Advanced Studies Center Faculty of ScienceKing Mongkut's Institute of Technology Ladkrabang

In this paper, a microring resonator(MRR) system using double-series ring resonators is proposed to generate and investigate the Rabi oscillations. The system is made up of silicon-on-insulator and attached to bus waveguide which is used as propagation and oscillation medium. The scattering matrix method is employed to determine the output signal intensity which acts as the input source between two-level Rabi oscillation states, where the increase of Rabi oscillation frequency with time is obtained at the resonant state. The population probability of the excited state is higher and unstable at the optical resonant state due to the nonlinear spontaneous emission process. The enhanced spontaneous emission can be managed by the atom(photon) excitation, which can be useful for atomic related sensors and single-photon source applications.

关键词： resonator oscillation resonant waveguide unstable excited spontaneous insulator attached Hamiltonian

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Single-Mode Modified Tapered Fiber Structure Functionalized With GO-PVA Composite Layer for Relative Humidity Sensing

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Photonic Sensors 2021年第3期11卷 314-324页

作者： Aneez Syuhada muhammad Salleh Shamsudin Suzairi Daud Ganesan Krishnan Sulaiman Wadi Harun muhammad safwan Abd.aziz Department of Physics Faculty of ScienceUniversiti Teknologi MalaysiaJohor Bahru81310Malaysia School of Engineering Faculty of Engineering and Physical SciencesUniversity of Southampton MalaysiaIskandar Puteri79200Malaysia Department of Electrical Engineering University of MalayaKuala Lumpur50603Malaysia Laser Center Ibnu-Sina Institute for Scientific and Industrial Research(ISI-SIR)Universiti Teknologi MalaysiaJohor Bahru81310Malaysia

A sensitive tapered optical fiber sensor incorporating graphene oxide(GO)and polyvinyl alcohol(PVA)composite film for the rapid measurement of changes in relative humidity was proposed and experimentally *** sensing principle was based on the intensity modulation of the transmitted light induced by the refractive index changes of the sensitive *** sensing region was obtained by tapering a section of single-mode optical fiber(SMF)from its original 125µm diameter down to 9.03µ*** tapered structure was then modified through deposition of GO/PVA nanocomposites by using the dip-coating *** field emission scanning electron microscope(FESEM)and Raman spectroscopy were used to characterize the structure of the composite *** evidenced by a Fourier transform infrared spectroscopy(FTIR)analysis,the presence of oxygen functional groups(such as−OH and COOH)on the GO structure enabled the attachment of PVA molecules through hydrogen bonding and strong adhesion between GO/PVA *** performance of the sensor was tested over a wide range(20%RH to 99.9%RH)of relative *** sensor showed a good response with its signal increasing linearly with the surrounding *** tapered optical fiber sensor with the coating of GO/0.3g PVA achieved the highest sensitivity[0.5290RH(%)].The stability,repeatability,reversibility,as well as response time of the designated sensor were also measured and analyzed.

关键词： Humidity sensor tapered optical fiber Graphene Oxide PVA

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