The thermo-optic effect in the lateral-carrier-injection pin junction SOI ridge waveguide is analyzed according to the thermal field equation.Numerical analysis and experimental results show that the thermo-optic effe...The thermo-optic effect in the lateral-carrier-injection pin junction SOI ridge waveguide is analyzed according to the thermal field equation.Numerical analysis and experimental results show that the thermo-optic effect caused by carrier injection is significant in such devices,especially for small structure ones.For a device with a 1000μm modulation length,the refractive index rise introduced by heat accounts for 1/8 of the total effect under normal working conditions.A proposal of adjusting the electrode position to cool the devices to diminish the thermal-optic effect is put forward.展开更多
We propose a novel 3-dimensional hollow waveguide with a variable air core for widely tunable devices.We observed a wavelength shift of 1.8 nm in a hollow waveguide resonator with a displacement of 6μm in an air core.
With progress in fabrication technology, integrated photonics plays an increasingly important role in high-speed optical communications, from monolithic transmitters and receivers for advanced optical modulation forma...With progress in fabrication technology, integrated photonics plays an increasingly important role in high-speed optical communications, from monolithic transmitters and receivers for advanced optical modulation formats to on-chip subsystems for optical signal processing. We review our recent work on the highly tailorable physical properties of silicon waveguides for communication and signal processing applications, using slot structures. Controllable chromatic dispersion, nonlinearity, and polarization properties of the waveguides are presented, and the enabled wideband wavelength conversion, optical tunable delay, and signal processing of polarization-multiplexing data channels are discussed.展开更多
A review is presented on some of our recent results for designs, simulations and fabrication of several photonic integrated devices, such as arrayed-waveguide gratings (AWGs) and etched diffraction gratings (EDGs), ba...A review is presented on some of our recent results for designs, simulations and fabrication of several photonic integrated devices, such as arrayed-waveguide gratings (AWGs) and etched diffraction gratings (EDGs), based on planar waveguide technologies. Some novel designs for flat-top AWGs and EDGs with flat-top spectral responses are presented.展开更多
基金Project supported by the Natural Basic Research Program of China(No.2007CB613405)the National Natural Science Foundation of China(No.60777015)+1 种基金the Science & Technology Program of Zhejiang Province,China(No.2007C21022)the Opened Fund of State Key Laboratory on Integrated Optoelectronics,China.
文摘The thermo-optic effect in the lateral-carrier-injection pin junction SOI ridge waveguide is analyzed according to the thermal field equation.Numerical analysis and experimental results show that the thermo-optic effect caused by carrier injection is significant in such devices,especially for small structure ones.For a device with a 1000μm modulation length,the refractive index rise introduced by heat accounts for 1/8 of the total effect under normal working conditions.A proposal of adjusting the electrode position to cool the devices to diminish the thermal-optic effect is put forward.
文摘We propose a novel 3-dimensional hollow waveguide with a variable air core for widely tunable devices.We observed a wavelength shift of 1.8 nm in a hollow waveguide resonator with a displacement of 6μm in an air core.
基金research work sponsored by DARPA (under contract number HR0011-09-C-0124)and HP Laboratories
文摘With progress in fabrication technology, integrated photonics plays an increasingly important role in high-speed optical communications, from monolithic transmitters and receivers for advanced optical modulation formats to on-chip subsystems for optical signal processing. We review our recent work on the highly tailorable physical properties of silicon waveguides for communication and signal processing applications, using slot structures. Controllable chromatic dispersion, nonlinearity, and polarization properties of the waveguides are presented, and the enabled wideband wavelength conversion, optical tunable delay, and signal processing of polarization-multiplexing data channels are discussed.
文摘A review is presented on some of our recent results for designs, simulations and fabrication of several photonic integrated devices, such as arrayed-waveguide gratings (AWGs) and etched diffraction gratings (EDGs), based on planar waveguide technologies. Some novel designs for flat-top AWGs and EDGs with flat-top spectral responses are presented.
