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Performance of Optical Fast-OFDM in MMF-Based Links
Fiber optics communications Modulation
2015/5/26
19.375Gb/s optical Fast-OFDM signals can be transmitted over 500m worst-case MMF DML-based links having 3-dB effective bandwidths of 150MHz.km. This performance is similar to that corresponding to a c...
Symmetrical 2-D Hermite-Gaussian Square Launch for High Bit Rate Transmission in Multimode Fiber Links
Fiber optics communication Fiber properties
2015/5/26
A 2-D Hermite-Gaussian square launch is demonstrated to show improved systems capacity over multimode fiber links. It shows a bandwidth improvement over both center and offset launches and exhibits ±5...
We report error-free performance at 25Gb/s using a directly-modulated 850nm VCSEL over 100m graded-index perfluorinated plastic optical fiber with good launch offset tolerance.Bandwidth assessment of ...
20-Gb/s Power-Efficient CMOS-Driven Multimode Links
Fiber optics links subsystems Fiber optics sources detectors Optical interconnects
2015/5/25
We report several firsts for CMOS-driven, VCSEL-based, multimode transmitters and receivers: serial links up to 20 Gb/s; unprecedented full-link power efficiencies from 8 pJ/bit (15 Gb/s) to 17 pJ/bit...
System Impacts of Modulation Technology and Phase Noise on Coherent Analog Optical Links
Radio frequency photonics
2015/5/22
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...
40 Gb/s Carrierless Amplitude and Phase Modulation for Low-Cost Optical Datacommunication Links
Fiber optics communications Modulation
2015/5/22
4 bps/Hz 40 Gb/s carrierless amplitude and phase (CAP) modulation is investigated for next-generation datacommunication links. The 40 Gb/s link achieves double the length of a conventional NRZ scheme,...
Performance prediction for WDM PM-QPSK transmission over uncompensated links
Coherent communications Nonlinear optics fibers
2015/5/21
We derive closed-form expressions depending on a single fitting parameter for performance prediction of WDM PM-QPSK long-haul uncompensated transmission. Besides general properties, we demonstrate tha...
Outage calculations for spatially multiplexed fiber links
Outage calculations spatially multiplexed fiber links
2015/5/21
We calculate multiple-input-multiple-output (MIMO) outage probabilities for optical fiber links employing spatial multiplexing across linearly coupled propagation modes in the presence of mode-depende...
Carrier Recovery and Equalization for Photonic-Wireless Links with Capacities up to 40 Gb/s in 75-110 GHz Band
Coherent communications Radio frequency photonics
2015/5/21
Novel robust digital carrier phase/frequency recovery structure is experimentally demonstrated for single carrier and multi-carrier, up to 40Gb/s, photonic-wireless links in 75-110 GHz band. We show t...
Transmit Isolating Photonic Receive Links : a New Capability for Antenna Remoting
Transmit Isolating Photonic Receive Links Capability Antenna Remoting
2015/5/20
We describe a new type of photonic link that replaces the low noise amplifier and circulator of conventional RF front ends, but has > 20 dB greater isolation and > 1000 times broader bandwidth.
Real-Time Evaluation of Optical Nonlinear Effects on 112Gbps PM-QPSK Signal in Dispersion Managed Links
Optical Communications Coherent Communications
2015/5/20
We demonstrate the impact of nonlinear effects on dispersion managed links with a FPGA-based 112Gbps real-time receiver. We clarify that PM-RZ-QPSK provides superior robustness, whereas PM-NRZ-QPSK of...
Performance of Microwave-Photonic Links
Fiber optics links subsystems Fiber optics optical communications
2015/6/9
Progress in high-performance microwave-photonic links is reviewed. Although recent research has explored a wide variety of techniques, none has provided a spur-free dynamic range approaching what may ...
Optical Carrier Suppression and Balanced Coherent Heterodyne Detection for Improved Performance in Wide-band Microwave Photonic Links
Optical Carrier Suppression Balanced Coherent Heterodyne Detection Improved Performance Wide-band Microwave Photonic Links
2015/6/8
We demonstrate a wide-band microwave photonic link with high gain and dynamic range, low noise figure, and dispersion-free propagation using double sideband suppressed carrier modulation, optical ampl...
Optical Phase-Modulated Radio-over-Fiber Links with K-means Algorithm for Digital Demodulation of 8PSK Subcarrier Multiplexed Signals
Coherent communications Phase modulation
2015/6/5
A k-means algorithm for phase recovery of three, 50 Mbaud, 8PSK subcarrier multiplexed signals at 5 GHz for optical phase-modulated radio-over-fiber is proposed and experimentally demonstrated after 4...
Radio Frequency Transparent Demodulation for Broadband Wireless Links
Modulation Radio frequency photonics
2015/6/5
Novel demodulation technique for radio over fiber systems, transparent to RF carrier frequency, employing coherent detection and baseband digital signal processing is presented for the first time. Mul...