نتایج جستجو برای: micro ring resonator

تعداد نتایج: 245520  

2015
Raju Sinha Mustafa Karabiyik Chowdhury Al-Amin Phani K. Vabbina Durdu Ö. Güney Nezih Pala

We propose and systematically investigate a novel tunable, compact room temperature terahertz (THz) source based on difference frequency generation in a hybrid optical and THz micro-ring resonator. We describe detailed design steps of the source capable of generating THz wave in 0.5-10 THz with a tunability resolution of 0.05 THz by using high second order optical susceptibility (χ((2))) in cry...

2009
Mario Iodice Luca De Stefano Giuseppe Coppola Vito Mocella Ilaria Rea Edoardo De Tommasi Emanuele Orabona Ivo Rendina

Micro-ring resonators have been widely employed, in recent years, as wavelength filters, switches and frequency converters in optical communication circuits, but can also be successfully used as transducing elements in optical sensing and biosensing. Their operation is based on the optical coupling between a ring-shaped waveguide and one or more linear waveguides patterned on a planar surface, ...

2014
Kee Scholten Xudong Fan Edward Zellers

The design, fabrication and preliminary performance assessment of a new vapor sensor comprising a microfabricated optofluidic ring resonator (μOFRR) and its application to microscale gas chromatographic (μGC) detection of volatile organic compounds (VOC) are presented. The μOFRR combines vapor sensing and fluidic transport functions in a micro-fabricated whispering gallery mode (WGM) resonator....

Journal: :Optics express 2009
Romi Shamai Uriel Levy

We demonstrate a tunable on chip polymer waveguide micro ring resonator (MRR) device. The transmission spectrum and extinction ratio are controlled by electrowetting on dielectric (EWOD), via the application of voltage to a droplet. As a result the droplet covers a portion of the MRR waveguide and changes its effective refractive index. This method can be used for efficiently tuning a variety o...

Journal: :Optics express 2015
Ryota Wakabayashi Mikio Fujiwara Ken-Ichiro Yoshino Yoshihiro Nambu Masahide Sasaki Takao Aoki

We demonstrate time-bin entanglement generation in telecom wavelength using a 7 μm radius Si micro-ring resonator pumped by a continuous wave laser. The resonator structure can enhance spontaneous four wave mixing, leading to a photon pair generation rate of about 90-100 Hz with a laser pump power of as low as -3.92 dBm (0.41 mW). We succeed in observing time-bin entanglement with the visibilit...

Journal: :Optics express 2011
Ciyuan Qiu Jie Shu Zheng Li Xuezhi Zhang Qianfan Xu

We experimentally demonstrate feedback controlling of the resonant wavelength of a silicon dual-ring resonator. The feedback signal is the difference in optical scattering from the two coupled microring resonators, and the control mechanism is based on thermo-optic tuning with micro-heaters. This control scheme keeps the central wavelength of the resonator aligning with the input wavelength, wh...

2014
Tanuj K. Garg Vipul Sharma

In this paper, authors present an optimized reconfigurable electrically small planar microstrip patch antenna loaded with square shaped split ring resonator metamaterial with micro-splits. In this the length of SRR is optimized so that the loaded antenna resonant at a frequency that lies in frequency regime in which the isolated SRR shows the metamaterial properties. To achieve the frequency tu...

Journal: :iranian journal of science and technology (sciences) 2004
a. bananej

we propose a new ring resonator side-coupled m-z interferometer all-optical switch throughthe pumped nonlinear directional coupler. by controlling pump power p to lead the coupler reflectivityr approaching to 1, the resonator finesse will be enhanced dramatically, and then the minimumswitching power in silica-based practice devices can be obtained. as a sample, we use a nonlinearcoupler made by...

Journal: :Optics express 2017
Giuseppe Cantarella Charalambos Klitis Marc Sorel Michael J Strain

Wavelength selective filters represent one of the key elements for photonic integrated circuits (PIC) and many of their applications in linear and non-linear optics. In devices optimised for single polarisation operation, cross-polarisation scattering can significantly limit the achievable filter rejection. An on-chip filter consisting of elements to filter both TE and TM polarisations is demon...

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