000172130 001__ 172130
000172130 005__ 20180913061000.0
000172130 0247_ $$2doi$$a10.1117/12.854620
000172130 020__ $$a978-0-8194-8186-3
000172130 02470 $$2ISI$$a000285086300039
000172130 037__ $$aCONF
000172130 245__ $$aOptical Bistable Switching With Kerr Nonlinear Materials Exhibiting a Finite Response Time in Two-Dimensional Photonic Crystals
000172130 260__ $$bSpie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa$$c2010
000172130 269__ $$a2010
000172130 336__ $$aConference Papers
000172130 490__ $$aProceedings of SPIE-The International Society for Optical Engineering
000172130 520__ $$aEffect of relaxation time on the performance of photonic crystal optical bistable switches based on Kerr nolinearity is discussed. This paper deals with optical pulses with the duration of about 50 ps. In such cases the steady state response of the optical device can be used to approximate the pulse evolution if the nonlinearity is assumed instantaneous, hence analytical solutions such as the coupled mode theory can be used to obtain the time evolution of the electromagnetic fields. However if the relaxation time of the material nonlinear response is also considered, changes in the power levels and in the shape of the hystersis loop is observed. In this case, we use the nonlinear finite difference time domain method (NL-FDTD) to follow the system dynamics and get the bistability hystersis loop. Codes are developed to analyze the instantaneous Kerr materials and the Kerr materials with finite response times. Depending on the material, the relaxation times of the order of 1-10fs should be considered in studying bistability to obtain the right shape of the output pulses. It is observed that the relaxation leads to larger input power and threshold and hence degrades the performance of the switch in pulse shaping.
000172130 6531_ $$anonlinear optics
000172130 6531_ $$aphotonics crystals
000172130 6531_ $$afinite difference time domain method
000172130 6531_ $$aoptical bistability
000172130 6531_ $$aoptical switching
000172130 6531_ $$aDispersive Media
000172130 6531_ $$aDomain Method
000172130 6531_ $$aFdtd
000172130 6531_ $$aPropagation
000172130 6531_ $$aSimulation
000172130 700__ $$0243412$$aNaqavi, Ali$$g191857$$uEcole Polytech Fed Lausanne, Inst Microengn IMT, Opt & Photon Technol Lab, CH-2000 Neuchatel, Switzerland
000172130 700__ $$aMonemHaghdoost, Zahra
000172130 700__ $$aAbediasl, Hooman
000172130 700__ $$aKhorasani, Sina
000172130 700__ $$aMehrany, Khashayar
000172130 7112_ $$aConference on Photonic Crystal Materials and Devices IX$$cBrussels, BELGIUM$$dApr 12-15, 2010
000172130 773__ $$j7713$$q-$$tPhotonic Crystal Materials And Devices Ix
000172130 909C0 $$0252447$$pIMT$$xU10343
000172130 909CO $$ooai:infoscience.tind.io:172130$$pconf$$pSTI
000172130 937__ $$aEPFL-CONF-172130
000172130 973__ $$aEPFL$$sPUBLISHED
000172130 980__ $$aCONF