Search Results - "Park, Yongwoo"

Sub-picosecond phase-sensitive optical pulse characterization on a chip by Pasquazi, Alessia, Peccianti, Marco, Park, Yongwoo, Little, Brent E., Chu, Sai T., Morandotti, Roberto, Azaña, José, Moss, David J.

“…The recent introduction 1 , 2 , 3 of coherent optical communications has created a compelling need for ultrafast phase-sensitive measurement techniques…”
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Linear Characterization of Optical Pulses With Durations Ranging From the Picosecond to the Nanosecond Regime Using Ultrafast Photonic Differentiation by Fangxin Li, Yongwoo Park, Azana, J.

“…In this paper, we extend the recently introduced linear technique for temporal phase reconstruction using optical ultrafast differentiation (PROUD) to achieve…”
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Efficient wavelength conversion and net parametric gain via four wave mixing in a high index doped silica waveguide by Pasquazi, Alessia, Park, Yongwoo, Azaña, José, Légaré, François, Morandotti, Roberto, Little, Brent E, Chu, Sai T, Moss, David J

“…We demonstrate sub-picosecond wavelength conversion in the C-band via four wave mixing in a 45cm long high index doped silica spiral waveguide. We achieve an…”
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Characterization and optimization of optical pulse differentiation using spectral interferometry by Yongwoo Park, Fangxin Li, Azana, J.

“…A simple fiber-based spectral interferometry setup is implemented for characterizing and monitoring the amplitude and phase of ultrafast temporal waveforms…”
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Fiber-Based Photonic Generation of High-Frequency Microwave Pulses With Reconfigurable Linear Chirp Control by Ashrafi, R, Yongwoo Park, Azana, J

“…A fiber-based approach for linear and continuous chirp control in photonics microwave pulse generation is proposed and demonstrated. The technique is based on…”
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Real-time Fourier transformation of lightwave spectra and application in optical reflectometry by Malacarne, Antonio, Park, Yongwoo, Li, Ming, LaRochelle, Sophie, Azaña, José

“…We propose and experimentally demonstrate a fiber-optics scheme for real-time analog Fourier transform (FT) of a lightwave energy spectrum, such that the…”
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Long-Period Fiber-Grating-Based Filter for Generation of Picosecond and Subpicosecond Transform-Limited Flat-Top Pulses by Slavik, R., Park, Y., Azana, J.

“…We suggest and demonstrate an all-fiber pulse shaper for synthesizing transform-limited flat-top waveforms. The proposed scheme can be easily scaled down to…”
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Group Delay Characterization of Dispersive Devices Using a Pulse Temporal Intensity Measurement Setup by Fangxin Li, Yongwoo Park, Azaa, J.

“…We propose and demonstrate a novel technique for group delay (GD) characterization of dispersive devices. The proposed technique involves the measurement of…”
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Ultrarapid Optical Frequency-Domain Reflectometry Based Upon Dispersion-Induced Time Stretching: Principle and Applications by Tae-Jung Ahn, Yongwoo Park, Azaña, J.

“…This paper reviews recent progress on a new, simple, and powerful technique for ultrahigh-speed optical frequency-domain reflectometry (OFDR), namely,…”
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Linear self-referenced complex-field characterization of fast optical signals using photonic differentiation by Azaña, José, Park, Yongwoo, Li, Fangxin

“…This paper reviews recent work on a new group of linear and self-referenced techniques for full (amplitude and phase) characterization of fast optical signals…”
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Synchronized Generation of Reconfigurable Microwave Sinusoidal Wave Packets From a Free-Running Pulsed Laser by Yongwoo Park, Tae-Jung Ahn, Fangxin Li, Azana, J.

“…Generation of customized microwave sinusoidal wave packets precisely synchronized with a free-running pulsed laser is required for many electrooptic…”
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Improved Optical Pulse Characterization Based on Feedback-Controlled Hilbert Transformation Temporal Interferometry by Ahn, Tae-Jung, Park, Yongwoo, Azana, Jose

“…We propose an accurate ultrashort optical pulse reconstruction method based on Hilbert transform temporal interferometry with a feedback control technique. The…”
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Implementation of Broadband Microwave Arbitrary-Order Time Differential Operators Using a Reconfigurable Incoherent Photonic Processor by Yongwoo Park, Asghari, M H, Helsten, R, Azana, José

“…A reconfigurable photonic signal processing system for arbitrary-order temporal differentiation of broadband microwave waveforms, with bandwidths up to a few…”
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640 Gb/s Timing Jitter-Tolerant Data Processing Using a Long-Period Fiber-Grating-Based Flat-Top Pulse Shaper by Oxenlowe, L.K., Slavik, R., Galili, M., Mulvad, H.C.H., Clausen, A.T., Yongwoo Park, Azana, J., Jeppesen, P.

“…We report on the use of a novel all-fiber flat-top pulse shaping technique for improving performance and timing jitter tolerance of a switch made for 640-10…”
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MHz-rate high-resolution reflectometry by direct mapping of the full axial-line profile in a single-shot oscilloscope trace by Malacarne, Antonio, Yongwoo Park, Azaña, Jose

“…A concept is introduced for optical reflectometry based on real-time spectral interference pattern Fourier transformation, enabling direct axial-line mapping…”
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Real-time group-delay monitoring of ultra-broadband dispersive devices by incoherent light interferometry by Yongwoo Park, Malacarne, Antonio, Azaña, Jose

“…A simple incoherent interferometry technique is demonstrated for real-time group-delay (GD) profile monitoring of ultra-broadband dispersive devices. We report…”
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Real-time optical spectrum Fourier transformation by Malacarne, A., Yongwoo Park, Ming Li, LaRochelle, S., Azana, J.

“…A novel concept for real-time and single-shot analog Fourier transformation of an arbitrary broadband optical energy spectrum is introduced and experimentally…”
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Demonstration of a photonic integrator-based loadable and erasable optical memory unit with picosecond switching times by Asghari, M.H., Yongwoo Park, Azana, J.

“…A novel ultrahigh-speed optical memory concept is demonstrated using an FBG-based photonic integrator with ultra-large memory storage-to-switching time ratio…”
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Characterization of a stress-applied polarization-maintaining (PM) fiber through photoelastic tomography by PARK, Yongwoo, PAEK, Un-Chul, DUG YOUNG KIM

“…An accurate two-dimensional (2-D) axial stress profile of a polarization-maintaining (PM) fiber was determined using high-resolution photoelastic tomography…”
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Linear, self-referenced fiber-optics technique for single-shot and real-time (sub-)picosecond optical pulse characterization by Yongwoo Park, Scaffardi, M, Malacarne, A, Poti, L, Azana, J

“…Single-shot, real-time ultra-short pulse intensity and phase characterization using a self-referenced and linear technique is proposed and experimentally…”
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