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Arista, Cisco, and Juniper's layer-2/3 modular switches with integrated coherent optics are interoperated over 2000 km at 150G 8QAM and 1000 km at 200G 16QAM on Microsoft's open line system.
ReRAM has been considered as one of the potential technologies for the next-generation nonvolatile memory, given its fast access speed, high reliability, and multi-level capability. Multiple-layered architectures have been used for several megabit test-chips and memory macros [1–3]. This paper presents a MeOx-based 32Gb ReRAM test chip developed in 24nm technology.
Recent advances of high-speed optical signal processing functionalities for Tbit/s optical networks will be presented. A briefly discussion of the trends and challenges of all-optical signal processing will also be given.
We demonstrate all-optical sub-channel data erasing/updating based on cascaded sum-and difference-frequency generation in a single PPLN waveguide. OSNR penalty of 2-dB for RZ and 4-dB for NRZ at a BER of 2e-3 are achieved.
We experimentally demonstrate optical multiplexing of 40-Gbit/s channels at different wavelengths onto a single 640-Gbit/s channel and subsequent 640-to-10-Gbit/s demultiplexing using cascaded nonlinear optical loop mirrors. An average penalty of ~3.5 dB at 10-9 BER is observed after the nonlinear processes.
We present a 2.3-Tbit/s network switching element by exploiting double-pass LCoS technology and bidirectional nonlinear effects inside a single HNLF. We demonstrate 2.3-Tbit/s grooming switch with simultaneous functions of add/drop, data exchange, and power equalization, for 23-channel 100-Gbit/s RZ-DQPSK signals.
A 640Gbit/s reconfigurable OTDM add/drop multiplexer is demonstrated, using a single periodically-poled Lithium-Niobate waveguide in a counter-propagating configuration. Error free operations confirm the effectiveness of a single device for simultaneous add/drop operations.
Employing 8PSK and 16PSK modulation formats, non-degenerate four-wave mixing (FWM) in a single highly nonlinear fiber (HNLF), and coherent detection, we experimentally demonstrate 40-Gbaud/s (120-Gbit/s) octal and 10-Gbaud/s (40-Gbit/s) hexadecimal simultaneous addition (A+B) and bidirectional subtraction (A-B, B-A).
160Gb/s all-optical binary-to-quaternary amplitude shift keying format conversion is carried out in nonlinear optical fiber. This scheme, which also acts as a 2-bit digital-to-analog convertor, has been confirmed through Q-factor measurements.
We propose and demonstrate optical hexadecimal coding/decoding of 16-QAM using degenerate four-wave mixing (FWM) in highly nonlinear fibers (HNLFs). Constellation manipulation for variable coding/decoding of a 10-Gbaud/s 16-QAM signal is implemented with an OSNR penalty of <1.1 dB with CW pump and <1.2 dB with phase-modulated pump Key.
We experimentally demonstrate a tunable optical generation of up to 40-Gbaud 16-QAM from a QPSK signal using a variable DGD element based on vector addition between two polarization states. We also show the baud rate tunability and investigate the tolerance of 16-QAM generation to the DGD offset.
We experimentally demonstrate optical multiplexing of two 20-Gbit/s QPSK channels at different wavelengths onto a single 40-Gbit/s star 16-QAM channel with tunable ring ratio using cascaded fiber-based nonlinear stages. The impact of QPSK channel spacing is also investigated. BER measurements confirm the effectiveness of the proposed scheme.
A method of reconfigurable frequency up/down-conversion using an optical parametric loop mirror is proposed. Up-conversion of up to 60GHz and down-conversion from 40GHz for single and WDM signals are demonstrated.
All-optical regeneration based on pump depletion in a PPLN waveguide is demonstrated at 640Gb/s. BER measurements confirm the effectiveness of the scheme.
We report phase-transparent DQPSK data exchange using parametric depletion in a highly nonlinear fiber. 100-Gbit/s DQPSK data exchange is demonstrated with a power penalty less than 5dB. Pump misalignment tolerance (+/-2ps) and input signal power dynamic range (~20dB) are investigated.
We demonstrate a scheme for reconfigurably selecting multiple tributaries of a 640-Gbit/s signal using cross-phase modulation in cascaded nonlinear optical loop mirrors (NOLMs). An average penalty of ~3.5 dB is introduced by each NOLM after arbitrarily selecting two 40-Gbit/s tributaries and subsequently redistributing them.
We demonstrate 640 Gb/s all-optical A and B̅, and A̅ and B logic functions using pump depletion in a PPLN waveguide. Bit error rate measurements show the effectiveness of the scheme, with a penalty of <; 2 dB.
The changepoint problem in a two-phase simple linear regression model has received increasing attentions. A changepoint in copy number variations in bioinformatics and medical informatics, pattern recognitions, data mining, and many other applications, refers to a time point at which a structural pattern change occurs during a long-term experimentation process. Given a series of observations, the...
We report tributary channel data traffic grooming/exchange of pol-muxed DPSK signal based on Kerr-induced nonlinear polarization rotation. 8 tributary channel data grooming between two pol-muxed 80-Gbit/s DPSK channels is demonstrated with a penalty of <4 dB.
We demonstrate multicasting of 40 Gb/s NRZ-OOK data into 24 RZ copies using a single pump and supercontinuum generation. The NRZ signal is optically sampled and a supercontinuum is generated using the sampled signal. An average ∼1.6 dB power penalty is achieved for 24 channels at a BER of 10−9.
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