Reconfigurable light-driven opto-acoustic isolators in photonic crystal fibre

Kang, Myeong Soo; Butsch, A.; Russell, P. St. J.

doi:10.1038/nphoton.2011.180

Cited by 354 publications

(274 citation statements)

References 21 publications

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“…In this regime, the efficiency of light-sound interaction depends strongly on the modal and phase matching between the acoustic and optical modes, and can be optimized with proper device design to achieve optimal modulation efficiency and ultrahigh modulation frequency. On this highly integrated A/O platform, we expect that a wide range of novel device applications may be developed, including ultrafast optical modulators, non-reciprocal photonic devices based on Brillouin scattering [38][39][40] and side-band-resolved cavity optomechanics using actively excited travelling acoustic waves [41][42][43] . and transmission loss.…”

Section: Discussionmentioning

confidence: 99%

Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies

Tadesse¹,

Li²

2014

Nat Commun

151

103

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Light-sound interactions have long been exploited in various acousto-optic devices based on bulk crystalline materials. Conventionally, these devices operate in megahertz frequency range where the acoustic wavelength is much longer than the optical wavelength and a long interaction length is required to attain significant coupling. With nanoscale transducers, acoustic waves with sub-optical wavelengths can now be excited to induce strong acoustooptic coupling in nanophotonic devices. Here we demonstrate microwave frequency surface acoustic wave transducers co-integrated with nanophotonic resonators on piezoelectric aluminum nitride substrates. Acousto-optic modulation of the resonance modes at above 10 GHz with the acoustic wavelength significantly below the optical wavelength is achieved. The phase and modal matching conditions in this scheme are investigated for efficient modulation. The new acousto-optic platform can lead to novel optical devices based on nonlinear Brillouin processes and provides a direct, wideband link between optical and microwave photons for microwave photonics and quantum optomechanics.

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Section: Discussionmentioning

confidence: 99%

Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies

Tadesse¹,

Li²

2014

Nat Commun

151

103

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“…In brief, gain suppression is unbalanced by the presence of an associated but qualitatively different effect: stimulated intermodal scattering (SIMS) between different guided optical modes of the dual-nanoweb structure. SIMS is related to stimulated interpolarization scattering between orthogonally polarized modes in linearly birefringent fibers 20 and to optoacoustic scattering between counter-propagating Bloch modes in fiber Bragg gratings. 21 It requires a larger amount of phonon momentum than SRLS, and the differing dispersion of the two optical modes means that the acoustic frequencywavevector relationship is no longer flat, i.e., the phonon frequency depends significantly on its momentum.…”

Section: Introductionmentioning

confidence: 99%

Resolving the mystery of milliwatt-threshold opto-mechanical self-oscillation in dual-nanoweb fiber

et al. 2016

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It is interesting to pose the question: How best to design an optomechanical device, with no electronics, optical cavity, or laser gain, that will self-oscillate when pumped in a single pass with only a few mW of single-frequency laser power? One might begin with a mechanically resonant and highly compliant system offering very high optomechanical gain. Such a system, when pumped by single-frequency light, might self-oscillate at its resonant frequency. It is well-known, however, that this will occur only if the group velocity dispersion of the light is high enough so that phonons causing pump-to-Stokes conversion are sufficiently dissimilar to those causing pump-to-anti-Stokes conversion. Recently it was reported that two light-guiding membranes 20 μm wide, ∼500 nm thick and spaced by ∼500 nm, suspended inside a glass fiber capillary, oscillated spontaneously at its mechanical resonant frequency (∼6 MHz) when pumped with only a few mW of single-frequency light. This was surprising, since perfect Raman gain suppression would be expected. In detailed measurements, using an interferometric side-probing technique capable of resolving nanoweb movements as small as 10 pm, we map out the vibrations along the fiber and show that stimulated intermodal scattering to a higher-order optical mode frustrates gain suppression, permitting the structure to self-oscillate. A detailed theoretical analysis confirms this picture. This novel mechanism makes possible the design of single-pass optomechanical oscillators that require only a few mW of optical power, no electronics nor any optical resonator. The design could also be implemented in silicon or any other suitable material.

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“…Considerable efforts has been made to investigate the optical diodes [9]. Recently, various possible solid-state optical diodes have been proposed, for example the diodes from standard bulk Faraday rotators [10], integrated on a chip [11], realized in opto-acoustic fiber [12] and from moving photonic crystal [13]. A kind of optical diode based on photon blockade effect also have been proposed, including photonic diode by a nonlinear-linear junction of coupled resonators [14] and optical diode of two semiconductor microcavities coupled via χ (2) nonlinearities [15].…”

Section: Introductionmentioning

confidence: 99%

Controlling photon transport in the single-photon weak-coupling regime of cavity optomechanics

et al. 2015

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We study the photon statistics properties of few-photon transport in an optomechanical system where an optomechanical cavity couples to two empty cavities. By analytically deriving the oneand two-photon currents in terms of a zero-time-delayed two-order correlation function, we show that a photon blockade can be achieved in both the single-photon strong-coupling regime and the single-photon weak-coupling regime due to the nonlinear interacting and multipath interference. Furthermore, our systems can be applied as a quantum optical diode, a single-photon source, and a quantum optical capacitor. It is shown that this the photon transport controlling devices based on photon antibunching does not require the stringent single-photon strong-coupling condition. Our results provide a promising platform for the coherent manipulation of optomechanics, which has potential applications for quantum information processing and quantum circuit realization.

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Reconfigurable light-driven opto-acoustic isolators in photonic crystal fibre

Cited by 354 publications

References 21 publications

Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies

Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies

Resolving the mystery of milliwatt-threshold opto-mechanical self-oscillation in dual-nanoweb fiber

Controlling photon transport in the single-photon weak-coupling regime of cavity optomechanics

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