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搜索结果: 1-15 共查到工学 OCDMA相关记录30条 . 查询时间(0.073 秒)
This investigation proposes and experimentally demonstrates an optical code-division multiple-access (OCDMA) light source using a directly modulated Fabry–Pérot laser diode in an external injection sc...
We develop the novel ±π/2-phase-shifted SSFBG en/decoders (31-chip 640Gchip/s)and verify the improved security performance. We also demonstrate the mixed use of 0/π- and ±π/2-phase-shifted SSFBG en/de...
In a cost-effective TDM-OCDMA-PON system without en/decoder at each ONU, the uplink dispersion-compensation-free 10 Gbps/1 Gbps-co-existing TDM x 4-OCDMA transmission over 100 km SMF is demonstrated b...
We propose and demonstrate a simple and low-cost uplink transmission scheme for coherent optical code-division multiple access (OCDMA) passive optical networks (PONs), using gain-switched Fabry-Perot ...
A low-cost electrically processed OCDMA system based on spatial coding and subcarrier multiplexing is proposed. The simulation shows that at least 10 simultaneous users can be supported in a 16-code O...
We propose and demonstrate an OCDMA-PON scheme with optical network unit (ONU) internetworking capability, which utilizes low-cost gain-switched Fabry-Pérot (GS-FP) lasers with external dual-wavelengt...
1.25Gbps time domain spectral phase encoded OCDMA signal with 32-chip, 40Gchip/s optical codes has been stealthily transmitted over public 10Gbps WDM channel. Error-free transmission has been achieved...
Multi-user, 10Gbps, optical code division multiple access (OCDMA) transmission over 59 km of standard single mode fiber without inline dispersion compensation is experimentally demonstrated for the fi...
The capacity of WDM/OCDMA system is analyzed under time-wavelength domain crosstalk to determine the simultaneous capacity threshold. The system’s crosstalk, channel spacing and datarate are optimized...
A novel low-power and cost-effective OCDMA thresholder based on nonlinear polarization rotation (NPR) is proposed. The excellent performance and feasibility of the NPR thresholder are experimentally d...
A novel centralized light source OCDMA PON without wavelength filters is proposed and experimentally demonstrated. The OCDMA coded signals and the unmodulated clock pulses are polarization-multiplexed...
简要介绍了OCDMA系统的原理,分析了码型和码容量、地址序列的扩频作用对OCDMA安全性的影响,结合完全无差错探测几率给出完全探测到正确地址码所需探测次数的期望值,并以此重点分析了码字探测对OCDMA安全性的影响,比较分析了OCDMA技术与现代光纤保密通信技术的关系,给出了增加OCDMA系统安全性而采取的一些措施。
We experimentally demonstrate for the first time an error-free asynchronous, 10-Gbps full-duplex DPSK OCDMA system that does not require any laser source at the users premises.
We develop a novel apodized, 16-level-phase-shifted SSFBG encoder/decoder, which can improve the system performance of OCDMA system. Error free (BER<10 -9 ) transmissions of 8x8 full-duplex, asynchron...

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