搜索结果: 136-150 共查到“光学仪器及技术 Optical”相关记录194条 . 查询时间(0.126 秒)
40 λ WDM Channel-by-Channel and Flexible Dispersion Compensation at 40 Gb/s Using Multi-channel Tunable Optical Dispersion Compensator
WDM Channel-by-Channel Flexible Dispersion Compensation Multi-channel Tunable Optical Dispersion Compensator
2009/7/15
We successfully demonstrated channel-by-channel and flexible CD compensation of 40 λ WDM signals at 40 Gb/s in 40/80 km spans using passband widened AWG-LCOS-based multi-channel TODC combined with a ...
Optical OFDM Signal Generation by Optical Phase Modulator and Its Application in ROF System
Optical OFDM Signal Optical Phase Modulator ROF System
2009/7/15
We have demonstrated optical OFDM signal generation by an optical phase modulator and applied it in a 40GHz ROF symmetric system. The power penalty for the downlink data after transmission over 50km S...
Chromatic Dispersion Tolerant Subcarrier Multiplexing Scheme Based on Tandem Frequency Shifted Optical SSB Modulation
Chromatic Dispersion Tolerant Subcarrier Multiplexing Scheme Tandem Frequency Shifted Optical SSB Modulation
2009/7/15
We propose a novel CD tolerant SCM scheme using tandem frequency shifted optical SSB modulation,which supports high frequencies and removes fading effect from vestigial sideband. Experiments show the ...
Novel Optical 90o Hybrid with Low Wavelength Sensitive Power Balance and Phase Deviation over 94-nm-wide Spectral Range
Novel Optical Wavelength Sensitive Power Balance Phase Deviation Spectral Range
2009/7/14
We propose a novel optical 90o hybrid employing a paired-interference 2×4 MMI coupler where no waveguide intersection in coupling to photo detectors is required. The proposed device exhibited 90o hybr...
40Gbps,3-bit Operation of a Semiconductor Optical Digital-to-Analog Converter
Semiconductor Optical Digital-to-Analog Converter
2009/7/14
We demonstrate 40Gbps, 3-bit-operation of a semiconductor optical digital-to-analog converter consisting of MMI couplers and delay lines. We achieved output with 7-level amplitude with fixed phase suc...
Optical Frequency Comb Generators Based on Fabry-Perot Electro-Optic Modulation
Optical frequency comb generator Fabry-Perot electro-optic modulator Optical frequency standard
2009/6/12
Optical frequency comb generators based on Fabry-Perot electro-optic modulator and its applications were introduced. The applications have been spreading beyond the first purpose as an optical frequen...
Realtime Nonlinear-Optical Microscopy for Observing Biological Cells
Nonlinear optical effect Two-photon fluorescence Second-harmonic generation
2009/6/12
The recent development of ultrashort pulse lasers emitting light in the near infrared region has enabled us to induce nonlinear optical effects in living biological cells. The use of nonlinear optical...
Fabrication of Three-Dimensional Micro Optical Device
Femtosecond laser pulse Silica glass Device
2009/6/9
By use of localized modification of transparent materials with femtosecond laser pulses the fabrication of three-dimensional photonic device was become possible. In this paper, we report on the fabric...
Trace Methane Detection Based on Raman Spectroscopy Using a High Finesse Optical Resonator
Raman spectroscopy Methane detection Gas sensor
2009/6/8
A Raman spectroscopy-based gas sensor employing a high-finesse simple diode laser pumped external cavity, Power Build-up Cavity (PBC), has been developed. Results show that a compact 10-cm-long PBC in...
Polarization-Reversal in Stoichiometric LiNbO3/LiTaO3 and Application to Optical Devices
Quasi-phase matching (QPM) LiTaO3 stoichiometry
2009/6/8
A polarization-reversed optical device has been attracting much attention as a next generation device due to its desinability and flexibility. Quasi-phase-matched (QPM) wavelength converters using pol...
Dependence of Bessel Beam Characteristics on Arrangement of Optical Axes of Axicon and Source Beam
Bessel beam Axicon Optical axis
2009/6/8
The Bessel beam (J0 beam) has potential for use in laser micro fabrication. We analyzed numerically the characteristics of a J0 beam at different distances between the optical axes of the Axicon and t...
Optical Kerr Gate Technique for Ultrafast Fluorescence Spectroscopy of Photoactive Proteins
Optical Kerr gate Time-resolved fluorescence Ultrafast spectroscopy
2009/6/8
A measurement system for ultrafast time-resolved fluorescence spectroscopy was constructed based on electronic Kerr effect. Suitable Kerr medium was searched among glasses and isotropic single crystal...
Optical Filters Utilizing Ion Implanted Bragg Gratings in SOI Waveguides
Optical Filters Utilizing Ion Bragg Gratings SOI Waveguides
2009/5/19
The refractive index modulation associated with the implantation of oxygen or silicon into waveguides formed in silicon-on-insulator (SOI) has been investigated to determine the feasibility of produci...
We present experimental results on optical properties of cranial bone controlled by administration of propylene glycol and glycerol. Both transmittance and reflectance spectra of human and porcine cra...
Three-Dimensional Silicon-Germanium Nanostructures for CMOS Compatible Light Emitters and Optical Interconnects
Three-Dimensional Silicon-Germanium Nanostructures CMOS Compatible Light Emitters Optical Interconnects
2009/5/19
Three-dimensional SiGe nanostructures grown on Si (SiGe/Si) using molecular beam epitaxy or low-pressure chemical vapor deposition exhibit photoluminescence and electroluminescence in the important sp...