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Subject: search.filters.subject.Microring Resonator

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    Modified add-drop microring resonator for temperature sensing
    (2015-10-01)
    Mohamad, Azam
    ;
    Bahadoran, Mahdi
    ;
    Noorden, Ahmad Fakhrurrazi Ahmad
    ;
    Aziz, Safwan
    ;
    Chaudhary, Kashif
    A micro resonating sensor is proposed for simultaneous measurement of temperature and carrier density using modified Add-drop resonator called PANDA resonator from silicon-on-insulator (SOI) material waveguide. The proposed sensor works by observing the concentration of free-carrier in silicon around room temperature yielding the sensitivity of 1×1023 m-3 C-1 with limit of detection of 10-5 C. It is found that the output intensity decreases due to the photon and thermal absorptions. It is found that the performance of the PANDA sensor is affected by the power at the first coupling region and increase in propagating lengths of PANDA sensor causes a nonlinear effect in carrier density production.
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    Analytical treatment and modeling of integrated ring resonator device by Z-transform method for signals amplification
    (2015-01-01)
    Aziz, Safwan
    ;
    Bahadoran, Mahdi
    ;
    Noorden, Ahmad Fakhrurrazi Ahmad
    ;
    Chaudhary, Kashif
    ;
    Ali, Jalil
    Unique configuration of integrated ring resonator circuit were modeled and discussed in this paper. The system consisted series of sub-micron size ring resonators fabricated by using nonlinear InGaAsP/InP material that laterally coupled together. This particular configuration is known as double PANDA ring resonator. For convenience of analysis, optical transfer function for this model is obtained by using Z-transform method. Equations governing pulse propagation within the system including output and circulated fields are discussed in details. Simulation results were based on analytical derivation. It suggested that intensity buildup is induced by the additional nanorings located ad both left and right sides of the system. This study mainly contribute towards the establishment of mathematical model of such system that able to predict accurately the practical operation processes of double PANDA ring resonator configuration.