搜索结果: 16-30 共查到“光学仪器及技术 Optical”相关记录194条 . 查询时间(0.521 秒)
Optical disk mastering using optical super resolution technique
disk mastering thermal-induced superresolution lithography
2011/11/29
A new laster lithography technique using the effect of optical superresolution can effectively reduce the exposed spot size on a photoresist layer,thus allowing disk mastering toward higher density us...
Oxygen and Nitrogen Co-Doped GeSbTe Thin Films for Phase-Change Optical Recording
GeSbTe recording layer oxygen and nitrogen doping optical constants microstructure crystallization temperatures phase-change optical disks
2011/11/28
Nitrogen and oxygen co-doped GeSbTe films for phase-change optical recording are investigated. It is found that optical properties of amorphous and crystalline state are similar to that of GeSbTe, cry...
Optical digital filters that employ optical delay lines are proposed. Properly locating the zeros in the transfer function is shown to enable interleaver pairs to be designed with the same amplitude r...
Differential cross-polarization modulation (DXPoM) wavelength conversion using a semiconductor optical amplifier has been proposed to outperform substantially traditional cross-polarization modulation...
Cost-Effective Multi-Services Hybrid Access Networks with no Optical Filter at Remote Nodes
2011/11/22
This letter experimentally demonstrates a multiservices hybrid access network integrated radio-over-fiber and fiber-to-the-home systems which share the same distributed architecture. A 1.25-Gb/s baseb...
Complete All-Optical Silica Fiber Isolator via Stimulated Brillouin Scattering
Brillouin scattering electrostriction optical fi bers optical isolators.
2011/8/10
This study demonstrates the theoretical operation of an all-optical silica fiber isolator using stimulated Brillouin scattering. Two pump sources that copropagate through a double-mode fib...
New Ground-to-Train High-Speed Free-Space Optical Communication System with Fast Handover Mechanism
Free-space optical communication Scanners
2011/5/26
We developed a new ground-to-train free-space optical communication system that performs stable high-speed communication even when a train is running at high speed and does fast handover between laser...
Frequency-Domain Equalization for Coherent Optical Transmission Systems
Coherent communications Fiber optics links subsystems
2011/5/26
Frequency-domain equalization (FDE) has been attracting much attention for high-speed long-haul transmission over fiber-optic channels. Two FDE configurations for coherent optical transmission are pre...
Colorless Compact Tunable Optical Dispersion Compensator based Solely on Linear Translation
fiber optics communications dispersion compensation devices
2011/5/26
We propose and demonstrate a compact tunable optical dispersion compensator(TODC) with 100-GHz FSR. The TODC is based on longitudinal displacement of a WGR resulting in chromatic dispersion compensati...
Wide-Passband 88-Wavelength Channel-by-Channel Tunable Optical Dispersion Compensator with 50-GHz Spacing
Dispersion compensation devices Waveguides planar Gratings Spatial light modulators
2011/5/26
We realized a wide-passband multi-channel tunable optical dispersion compensator for 88 WDM signals with 50-GHz spacing by combination of an arrayed-waveguide and bulk gratings.It utilizes a novel opt...
Parallel WDM Regenerative Waveform Conversion for Mixed NRZ and RZ Transmission Networks Using a SOA- Based Multiple Switching-Window Optical Gate
Fiber optics communications Optical processing devices
2011/5/25
We propose and demonstrate parallel regenerative waveform conversion with tunable pulsewidths using SOA-based multiple switching-window optical-gate (MW-OG). MW-OG based inline regenerations improve p...
Unaltered Optical Fiber as an Absolute Wavelength Reference for OFDR Systems
Interferometry Phase measurement
2011/5/25
We present a novel method of obtaining an absolute wavelength reference for OFDR measurements using Rayleigh backscatter from standard optical fiber. We report 1 GHz (8pm)accuracy.
Long-Range Distributed Strain and Temperature Sensing with 40-cm Spatial Resolution Based on DPP-BOTDA Employing Optical Pre-Amplification and Simplex Coding
Fiber optics sensors Stimulated scattering
2011/5/25
Sub-meter resolution sensing has been achieved employing linear pre-amplification with Simplex-coded pulses employing DPP-BOTDA. Results demonstrate a spatial resolution of ~40 cm over 56km sensing fi...
A Novel MAMSK-OFDM technology for Next Generation Optical Access Networks
Novel MAMSK-OFDM technology Next Generation Optical Access Networks
2011/5/25
We propose and experimentally demonstrate a novel MAMSK-OFDM-PON. 5-Gb/s MAMSK-OFDM signal and 2.5-Gb/s upstream OOK signal is transmitted over 20km fiber successfully. The results show the prospect o...
System Impacts of Modulation Technology and Phase Noise on Coherent Analog Optical Links
Radio frequency photonics
2011/5/22
We describe an analog optical link using amplitude modulation and coherent detection for high SFDR, gain, and low noise figure. We then address the dominant performance-limiting parameters and discuss...