134 research outputs found
Local temperature control of photonic crystal devices via micron-scale electrical heaters
We demonstrate a method to locally control the temperature of photonic
crystal devices via micron-scale electrical heaters. The method is used to
control the resonant frequency of InAs quantum dots strongly coupled to GaAs
photonic crystal resonators. This technique enables independent control of
large ensembles of photonic devices located on the same chip at tuning speed as
high as hundreds of kHz
Two-dimensional coupled photonic crystal resonator arrays
We present the design and fabrication of photonic crystal structures
exhibiting electromagnetic bands that are flattened in all crystal directions,
i.e., whose frequency variation with wavevector is minimized. Such bands can be
used to reduce group velocity of light propagating in arbitrary crystal
direction, which is of importance for construction of miniaturized tunable
optical delay components, low-threshold photonic crystal lasers, and study of
nonlinear optics phenomena.Comment: 8 pages text and 3 figures on 3 pages. Published on Appl. Phys. Lett.
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Photonic Crystal Cavities in Silicon Dioxide
One dimensional nano-beam photonic crystal cavities fabricated in silicon
dioxide are considered in both simulation and experiment. Quality factors of
over 10^4 are found via simulation, while quality factors of over 5*10^3 are
found in experiment, for cavities with mode volumes of 2.0 cubic wavelengths
(in oxide) and in the visible wavelength range (600-716nm). The dependences of
the cavity quality factor and mode volume for different design parameters are
also considered.Comment: 4 pages, 3 figure
Analysis of a Quantum Nondemolition Measurement Scheme Based on Kerr Nonlinearity in Photonic Crystal Waveguides
We discuss the feasibility of a quantum nondemolition measurement (QND) of
photon number based on cross phase modulation due to the Kerr effect in
Photonic Crystal Waveguides (PCWs). In particular, we derive the equations for
two modes propagating in PCWs and their coupling by a third order nonlinearity.
The reduced group velocity and small cross-sectional area of the PCW lead to an
enhancement of the interaction relative to bulk materials. We show that in
principle, such experiments may be feasible with current photonic technologies,
although they are limited by material properties. Our analysis of the
propagation equations is sufficiently general to be applicable to the study of
soliton formation, all-optical switching and can be extended to processes
involving other orders of the nonlinearity
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