Multi-wavelength photonic band gaps based on quasi-periodically poled lithium niobate ordered in Fibonacci sequences |
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| Authors: | Zhuoer Zhou Jianhong Shi Xianfeng Chen |
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| Affiliation: | Department of Physics,The State Key Laboratory on Fiber-Optic Local Area Network and Advanced Optical Communication Systems,Shanghai Jiao Tong University,Shanghai 200240,China |
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| Abstract: | We demonstrate a quasi-periodic structure exhibiting multiple photonic band gaps (PBGs) based on submicron-period poled lithium niobate (LN).The structure consists of two building blocks,each containing a pair of antiparallel poled domains,arranged as a Fibonacci sequence.The gap wavelengths are analyzed with the Fibonacci sequence parameters such as the quasiperiodic indices and the average lattice parameter.The transmission properties are investigated by a traditional 4x4 matrix method.It has also been proved that the gap depth can be tuned by the lengths of poled domains. |
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