Investigation of phase matching for third-harmonic generation in silicon slow light photonic crystal waveguides using Fourier optics
Christelle Monat,Christian Grillet,Bill Corcoran,David J. Moss,Benjamin J. Eggleton,Thomas P. White,Thomas F. Krauss +6 more
TLDR
Using Fourier optics, it is shown that quasi-phase matching between the third-harmonic signal and the fundamental mode is provided in this geometry by coupling to the continuum of radiation modes above the light line.Abstract:
Using Fourier optics, we retrieve the wavevector dependence of the third-harmonic (green) light generated in a slow light silicon photonic crystal waveguide. We show that quasi-phase matching between the third-harmonic signal and the fundamental mode is provided in this geometry by coupling to the continuum of radiation modes above the light line. This process sustains third-harmonic generation with a relatively high efficiency and a substantial bandwidth limited only by the slow light window of the fundamental mode. The results give us insights into the physics of this nonlinear process in the presence of strong absorption and dispersion at visible wavelengths where bandstructure calculations are problematic. Since the characteristics (e.g. angular pattern) of the third-harmonic light primarily depend on the fundamental mode dispersion, they could be readily engineered.read more
Citations
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Optical signal processing on a silicon chip at 640Gb/s using slow-light
Bill Corcoran,Christelle Monat,Mark Pelusi,Christian Grillet,Thomas P. White,Liam O'Faolain,Thomas F. Krauss,Benjamin J. Eggleton,David J. Moss +8 more
TL;DR: This work demonstrates optical performance monitoring of in-band optical signal to noise ratio (OSNR) and residual dispersion, using slow-light enhanced optical third harmonic generation (THG) in a compact 2D silicon photonic crystal waveguide, and opens the door for slow light to play a key role in ultra-high bandwidth telecommunications systems.
Journal ArticleDOI
Four-wave mixing in slow light engineered silicon photonic crystal waveguides
Christelle Monat,Majid Ebnali-Heidari,Christian Grillet,Bill Corcoran,Benjamin J. Eggleton,Thomas P. White,Liam O'Faolain,Juntao Li,Thomas F. Krauss +8 more
TL;DR: The results, supported by numerical simulations, emphasize the importance of engineering the dispersion of PhC waveguides to exploit the slow light enhancement of FWM efficiency, even for short device lengths.
Journal ArticleDOI
Slow light enhanced nonlinear optics in periodic structures
TL;DR: In this paper, the authors describe the underlying theory developed for shallow gratings, but whose conclusions can be extended to planar photonic crystal waveguides, in particular the enhancement of third-order nonlinear processes with slow light.
Journal ArticleDOI
Error-free all-optical demultiplexing at 160Gb/s via FWM in a silicon nanowire
TL;DR: All-optical time division demultiplexing from 160Gb/s to 10Gb/S in the C-band is demonstrated, based on four-wave mixing (FWM) in a silicon nanowire, with error-free operation with a system penalty of ∼ 3.9dB at 10–9 BER.
Journal ArticleDOI
Integrated optical auto-correlator based on third-harmonic generation in a silicon photonic crystal waveguide
Christelle Monat,Christelle Monat,Christian Grillet,Christian Grillet,Matthew J. Collins,Alex S. Clark,Jochen Schroeder,Chunle Xiong,Juntao Li,Juntao Li,Liam O'Faolain,Thomas F. Krauss,Thomas F. Krauss,Benjamin J. Eggleton,David J. Moss,David J. Moss +15 more
TL;DR: A device capable of achieving single-shot time-domain measurements of near-infrared picosecond pulses based on an ultra-compact integrated CMOS-compatible device, which could operate without any external instrumentation is reported.
References
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Journal ArticleDOI
Slow light in photonic crystals
TL;DR: In this article, the background theory of slow light, as well as an overview of recent experimental demonstrations based on photonic-band engineering are reviewed, and practical issues related to real devices and their applications are also discussed.
Journal ArticleDOI
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Steven G. Johnson,Shanhui Fan,Pierre R. Villeneuve,John D. Joannopoulos,Leslie A. Kolodziejski +4 more
TL;DR: In this paper, the properties of two-dimensional periodic dielectric structures that have a band gap for propagation in a plane and that use index guiding to confine light in the third dimension are analyzed.
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Extremely Large Group-Velocity Dispersion of Line-Defect Waveguides in Photonic Crystal Slabs
TL;DR: Waveguiding characteristics and group-velocity dispersion of line defects in photonic crystal slabs as a function of defect widths reveal that they can be tuned by controlling the defect width, and the results agree well with theoretical calculations, indicating that light paths with made-to-order dispersion can be designed.
Journal ArticleDOI
Enhancement of nonlinear effects using photonic crystals.
TL;DR: If all-optical devices using photonic crystal designs promise to be smaller than the wavelength of light, and to operate with bandwidths that are very difficult to achieve electronically, operation at single-photon power levels could be feasible.
Journal ArticleDOI
Systematic design of flat band slow light in photonic crystal waveguides.
TL;DR: The procedure aims to maximize the group index - bandwidth product by changing the position of the first two rows of holes of W1 line defect photonic crystal waveguides to achieve nearly constant group index- bandwidth product for group indices of 30-90.