164 research outputs found
Bias-free, low power and optically driven InP on SOI switch for remotely configurable photonic packet switches
First ever demonstration of an InP-on-SOI switch for all-optical-packet-switching. The switch has 300/1300psec on/off switching times, > 30dB extinction-ratio and no measurable pattern dependence or switch related power penalties up to a bit rate of 40Gb/sec
Regimes of operations of semiconductor ring lasers under optical injection and applications to optical signal processing
We present a detailed characterization of the semiconductor ring-laser operating regimes with special emphasis on the response to optical injection. Applications to an optical set/reset bistable memory and four-wave-mixing tunable THz signals generation are demonstrated.</p
Optical switching and detection of 640 Gbits/s optical time-division multiplexed data packets transmitted over 50 km of fiber
We demonstrate 1Ă—4 optical-packet switching with error-free transmission of 640ÂżGbits/s single-wavelength optical time-division multiplexed data packets including clock distribution and short pulse generation for optical time demultiplexing based on a cavityless pulse source
A compact integrated 40Gb/s packet demultiplexer and label extractor on silicon-on-insulator for an optical packet switch
We demonstrate a compact 40Gb/s 32-channel packet demultiplexer and in-band label extractor based on photonic integrated AWG followed by a narrow-band microring resonator at each AWG output. Error free operation with =0.5dB penalty was measure
Stability of the inverse resonance problem on the line
In the absence of a half-bound state, a compactly supported potential of a
Schr\"odinger operator on the line is determined up to a translation by the
zeros and poles of the meropmorphically continued left (or right) reflection
coefficient. The poles are the eigenvalues and resonances, while the zeros also
are physically relevant. We prove that all compactly supported potentials
(without half-bound states) that have reflection coefficients whose zeros and
poles are \eps-close in some disk centered at the origin are also close (in a
suitable sense). In addition, we prove stability of small perturbations of the
zero potential (which has a half-bound state) from only the eigenvalues and
resonances of the perturbation.Comment: 21 page
High-speed optical signal processing for telecom applications
Abstract-We discuss high-speed optical signal processing for telecom applications. We focus on the optical wavelength conversion and self-clocking, respectively. In the optical wavelength conversion, we report 40 Gb/s wavelength conversion that is capable of converting the same wavelength using a single semiconductor optical amplifier. Experimental proofs are presented. In addition, we report a novel self-clocking method based on in-band clock pilot insertion at the transmission data signal. The method provides clock recovery without an ultrafast phase comparator and a phase-locked loop in the receiver. Fast synchronization, low timing jitter and a highly stable recovered clock is demonstrated from 160 Gb/s OTDM data signal after 51-km fiber transmission
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