搜索结果: 1-15 共查到“知识库 光纤光学及技术 Coherent”相关记录20条 . 查询时间(0.045 秒)
Modeling Coherent Backscattering Errors in Fiber Optic Gyroscopes for Sources of Arbitrary Line Width
Backscattering drift backscattering noise fi ber optic gyroscope laser phase noise
2013/8/7
We present a new model of the noise and drift induced by coherent backscattering in a fiber optic gyroscope (FOG) interrogated with a light source of arbitrary temporal coherence. This study is ...
Coherent Detected Secure Point-to-Point Optical Fiber Transmission using Ultra-Dense Optical Spectral Phase Coding (UD-SPC) and Multilevel BCJR Equalization
Coherent Detected Secure Point-to-Point Optical Fiber Transmission Ultra-Dense Optical Spectral Phase Coding Multilevel BCJR Equalization
2012/12/2
A secure P2P optical fiber communication scheme based on ultra-dense optical spectral phase coding (UD-SPC) is proposed. The multi-code interference is suppressed by increasing the memory of the multi...
MLSE-Based Nonlinearity Mitigation for WDM 112 Gbit/s PDM-QPSK Transmissions with Digital Coherent Receiver
Coherent communications Fiber optics communications
2011/5/26
We investigate the performance of linear equalization combined with MLSE in long-haul transmission. In the nonlinear regime with high launch powers Q-factor improvement up to 1.4 dB is demonstrated wi...
Second-Order PMD Monitoring from Adaptive FIR-Filter Tap Coefficients in a Digital Coherent Receiver
Fiber optic communication Coherent communications Homodyning
2011/5/26
We propose a straightforward algorithm to estimate second-order PMD from adaptive FIR-filter tap coefficients in a digital coherent optical receiver. The novel algorithm is verified with 100-Gbit/s du...
Generation of 5-Gbps QPSK Signal using Directly Modulated RSOA for 100-km Coherent WDM PON
Fiber optics links subsystems Coherent communications
2011/5/22
We generate the QPSK signal by utilizing the chirp characteristics of the directly modulated RSOA for the high-speed coherent WDM PON. In addition, we demonstrate the error-free transmission of the 5-...
Reconfigurable Digital Coherent Receiver for Metro-Access Networks Supporting Mixed Modulation Formats and Bit-rates
Reconfigurable Digital Receiver Metro-Access Networks Supporting Mixed Modulation Formats Bit-rates
2011/5/20
Single reconfigurable DSP coherent receiver is experimentally demonstrated for mixed-format and bit-rates including QPSK, OFDM, IR-UWB for wireline and wireless signal types. Successful transmission o...
1-Tb/s Large Girth LDPC-Coded Coherent Optical OFDM Transmission over 1040-km Standard Single-Mode Fiber
Large Girth LDPC-Coded Coherent Optical OFDM Standard Single-Mode Fiber
2011/5/15
We experimentally demonstrate 1-Tb/s CO-OFDM transmission over 1040-km standard single-mode fiber using 50% overhead girth-12 LDPC-coded 16-QAM. More than 4-dB improvement in OSNR sensitivity is achie...
Remote Measurement Method for Transmission Characteristics of Access Network Fibers with Coherent MPI
Coherent MPI Transmission Characteristics Fibers Remote Measurement
2011/5/14
A Novel technique to measure the transmission characteristics of access network fibers is proposed. The spectral losses including effects of coherent MPI are also estimated using PON architecture of s...
Transmission of 42.8-Gb/s Polarization Multiplexed RZ- QPSK DWDM Signals over 3900 km with 12.5-GHz Channel Spacing and Coherent Detection
Fiber optical communications Fiber optics links subsystems
2010/6/9
We have experimentally demonstrated 42.8Gb/s DWDM transmission over 3900km SMF-28 with 12.5-GHz channel spacing and coherent detection. Eight polarization-multiplexed-RZ-QPSK signals have been success...
110-Gb/s Multi-band Real-time Coherent Optical OFDM Reception after 600-km Transmission over SSMF Fiber
Fiber optics links subsystems Coherent communications
2010/6/8
We demonstrate real-time reception of a 110-Gb/s multi-band OFDM signal after transmission of 600-km SSMF fiber and 400-ps differential-group-delay. The performance of 110-Gb/s CO-OFDM signal is chara...
Fiber Nonlinearity Mitigation in 428-Gb/s Multiband Coherent Optical OFDM Systems
Fiber optics communications Coherent Communications
2010/6/4
We propose DFT-spread (DFT-S) OFDM within each sub-band of multiband-CO-OFDM to mitigate fiber nonlinearity. For 1000-km standard-single-mode-fiber transmission at 420-Gb/s, 32-band DFT-S CO-OFDM outp...
Joint Equalization and Timing Recovery for Coherent Fiber Optic Receivers
Joint Equalization Timing Recovery Coherent Fiber Optic Receivers
2009/7/30
A new low-complexity, dispersion-robust digital timing recovery for coherent systems is presented as a joint implementation with the FIR-equalizer, demonstrated for 112Gb/s RZ-CP-QPSK.
Transmission of a 1.2-Tb/s 24-Carrier No-Guard-Interval Coherent OFDM Superchannel over 7200-km of Ultra-Large-Area Fiber
Transmission OFDM Superchannel Ultra-Large-Area Fiber
2009/7/20
We demonstrate the generation of a novel 1.2-Tb/s NGI-CO-OFDM superchannel comprising of 24 frequency-locked 12.5-GHz spaced PDM-QPSK carriers, and transmit it over 72x100-km of ultra-large-area fiber...
Long Reach and Enhanced Power Budget DWDM Radio-over-Fibre Link Supported by Raman Amplification and Coherent Detection
Enhanced Power Budget DWDM Radio-over-Fibre Link Supported Raman Amplification
2009/7/17
We report on a scalable and enhanced power budget radio-over-fibre system for hybrid-wireless access networks operating at 12.5 GHz DWDM spacing for 5 GHz RF carriers over a 60 km fibre link with Rama...
107 Gb/s Transmission over Multimode Fiber with Coherent Optical OFDM Using Center launching Technique
Multimode Fiber Coherent Optical OFDM Center launching Technique
2009/7/15
We experimentally demonstrate 107-Gb/s coherent optical OFDM transmission over non-amplified and amplified multimode fiber link. A record performance of 10 Tb/s·km over multimode fiber has been achiev...