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Control-plane enabled 100G transmission over a flexible optical layer is becoming a commercial reality in optical core networks. This paper discusses the drivers and challenges as well as future trend...
Microwave Photonic Filters with a Directly Generated Gaussian-shaped Optical Frequency Comb
Microwave Photonic Filters Directly Generated Gaussian-shaped Optical Frequency Comb
2015/5/21
Using electro-optic modulators, we generate a 41-line 10-GHz spaced Gaussian-shaped optical comb. We use this comb to demonstrate apodized microwave photonic filters with greater than 43-dB sidelobe s...
Over 1-Tbit/s/port Polarization-Multiplexed DWDM/DQPSK Optical Packet Switching and Buffering
Over 1-Tbit/s/port Polarization-Multiplexed DWDM/DQPSK Optical Packet Switching Buffering
2015/5/20
We demonstrate 1.2-Tbit/s/port polarization-multiplexed optical packet (20 Gbit/s DQPSK × 30λ × 2 Polarization) switching and buffering. Our optical packet switch system with low polarization dependen...
Nine-Way Optical Wavelength Multicasting and Field Trail Transmission over Optical Network Test-bed (JGN2Plus)
Nine-Way Optical Wavelength Multicasting Field Trail Transmission Optical Network Test-bed (JGN2Plus)
2015/5/20
We experimentally demonstrate 1-to-9 optical wavelength multicasting, based on dual-pump four-wave mixing in highly-nonlinear fiber. A 100-km field trial experiment is also conducted to demonstrate th...
Experimental Evaluation of Centralized Failure Restoration in a Dynamic Impairment-Aware All-Optical Network
Centralized Failure Restoration Dynamic Impairment-Aware All-Optical Network
2015/5/20
A centralized impairment-aware lightpath restoration scheme is experimentally demonstrated. Through the implementation of the QoT estimator module on FPGA technology,restoration times of 1.36s are ach...
40 Gb/s 8×8 Low-latency Optical Switch for Data Centers
Low-latency Optical Switch Data Centers
2015/5/20
This paper reports on a 40 Gb/s 8×8 optical switch for data centers. Experiments demonstrate error-free operation with 118.2 ns switching latency in contention-less architecture.Simulations show 150 n...
All-optical phase-preserving amplitude regeneration of 28- Gbaud RZ-DQPSK signals with a microcavity saturable absorber in a recirculating loop experiment
All-optical phase-preserving amplitude regeneration 28- Gbaud RZ-DQPSK signals microcavity saturable absorber recirculating loop experiment
2015/5/20
Microcavity Saturable absorber is used for phase-preserving amplitude regeneration of RZ-DQPSK signals. The regenerator is assessed in a 28 Gbaud recirculating loop showing system tolerance to nonline...
All-Optical 2R Regeneration of BPSK and QPSK Data using a 90° Optical Hybrid and Integrated SOA-MZI Wavelength Converter Pairs
Coherent communications Wavelength conversion devices
2015/5/20
We demonstrate all-optical 2R regeneration with a 90° optical hybrid and integrated MZI-SOA pairs for 10 Gb/s BPSK and 20 Gb/s QPSK with negative power penalty. Power penalty and OSNR improvements of ...
Robust design of all-optical PSK regenerator based on phase sensitive amplification
Robust design all-optical PSK regenerator based phase sensitive amplification
2015/5/20
More compact, stable, and efficient configuration of a recently-developed regenerator is presented. The regenerator is assessed at data rates up to 56 Gbit/s using white phase noise for the first time...
An Optimal Tone Reservation Method for IM/DD Optical OFDM Transmission in Multimode Fiber
Optimal Tone Reservation Method IM/DD Optical OFDM Transmission Multimode Fiber
2015/5/20
We propose an optimal, yet efficient tone reservation method which enables distortion-free IM/DD optical OFDM transmission with no additional bias. Compared to previous approaches, both spectral and p...
Performance Investigation of Polarization-Multiplexed 16-QAM using All-Optical OFDM Transmission and Digital Coherent Detection
Performance Investigation Polarization-Multiplexed All-Optical OFDM Transmission Digital Coherent Detection
2015/5/20
We generated a 500-Gb/s AO-OFDM signal with DP-16QAM modulating each subcarrier and detected the signal using coherent detection. We investigated the effects of DSP oversampling and receiver bandwidth...
World-First Experimental Demonstration of Synchronous Clock Recovery in an 11.25Gb/s Real-Time End-to-End Optical OFDM System Using Directly Modulated DFBs
Synchronous Clock Recovery Real-Time End-to-End Optical OFDM System Directly Modulated DFBs
2015/5/20
A simple, highly-effective, DSP-free, optical OFDM(OOFDM) synchronous clock recovery technique preserving system performance and enhancing stability is proposed and experimentally demonstrated, for th...
Realization of a 23.9 Gb/s Real Time Optical-OFDM Transmitter with a 1024 Point IFFT
Realization Optical-OFDM Transmitter Point IFFT
2015/5/20
We report a FPGA-based real time 23.9-Gb/s CO-OFDM transmitter with IQ-mixing with a 1024 point FFT, the largest FFT-size reported to date. For a BER of 10 -3 a required OSNR of 10.8 dB is measured.
Recent Progress on Real-Time DSP for Direct Detection Optical OFDM Transceivers
Recent Progress Real-Time DSP Direct Detection Optical OFDM Transceivers
2015/5/20
We describe recent developments in real-time digital signal processing for direct detection optical OFDM transceivers, including the optimization of high throughput FFT algorithms and receiver synchro...
Bit-error Rate Performance of Nyquist Wavelength-Division Multiplexed Quadrature Phase-Shift Keying Optical Signals
Coherent communications Multiplexing Optical communications
2015/5/20
We measure bit-error rates of polarization-multiplexed Nyquist-WDM QPSK signals,which have rectangular spectral shapes and channel spacing equal to the symbol rate. The spectral efficiency of 4 bit/s/...