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Harnessing Traveling-wave Photon-phonon Interactions in Integrated Waveguides.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Harnessing Traveling-wave Photon-phonon Interactions in Integrated Waveguides./
作者:	Kittlaus, Eric Andrew.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	292 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-01, Section: B.
Contained By:	Dissertations Abstracts International81-01B.
標題:	Applied physics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13918044
ISBN:	9781392328743

Harnessing Traveling-wave Photon-phonon Interactions in Integrated Waveguides.
Kittlaus, Eric Andrew.

Harnessing Traveling-wave Photon-phonon Interactions in Integrated Waveguides. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 292 p.

Source: Dissertations Abstracts International, Volume: 81-01, Section: B.

Thesis (Ph.D.)--Yale University, 2019.

This item must not be added to any third party search indexes.

By interfacing chip-based electrical circuits with optical waveguides. the field of integrated photonics seeks to create next-generation technologies for information processing. highspeed communications, and precision sensing. To this end. a considerable body of work over the past two decades has demonstrated high-performance waveguide-integrated modulators, filters, light sources, and detectors with potential advantages in terms of size, power consumption, performance, and cost over conventional benchtop systems.In this dissertation, we explore interactions between traveling photons and phonons within these integrated photonic circuits. By coupling optical and elastic degrees of freedom. we develop new functionalities not available within all-optical systems. We harness these techniques to demonstrate optical amplifiers, microwave filters. nonreciprocal devices, c:md signal-processing techniques within integrated silicon waveguides.Underpinning these interactions is a nonlinear optical effect called stimulated Brillouin scattering (SBS). While Kerr (electronic) and Raman (optical phonon-mediated) nonlinearities are well-known to be enhanced by sub-wavelength confinement in integrated waveguides, Brillouin nonlinearities. which are the strongest nonlinearity in optical fiber. were previously absent in semiconductor integrated photonic circuits. By designing new optomechanical waveguide structures which tightly confine light and sound, these nonlinearities become radically enhanced, making them not only measurable, but exceedingly strong and tailorable.Utilizing suspended waveguide designs, we describe the development of silicon waveguide-integrated Brillouin amplifiers that permit appreciable (>5 dB) optical amplification through forward SBS (FSBS). This process also enables a novel form of cascaded energy transfer between multiple coupled optical waves. In contrast to prior works, which painted a relatively bleak picture for Brillouin amplification in silicon. these results demonstrate great potential for efficient optomechanical signal processing within silicon waveguides.Beyond applications in nonlinear optics, we use these robust FSBS couplings to explore new concepts for acousto-optic signal processing through Brillouin-mediated coherent phonon generation. One such technique is realized using structures that couple two distinct optical waveguides to a common phonon mode. In this device, forward SBS is used to convert a microwave signal into an elastic wave, where the signal is filtered through the device's designed phononic transfer function. This signal then phase-modulates light guided in a separate waveguide, converting it back to the optical domain. This operation is used to demonstrate high-fidelity, ultn-1-narrowband radiofrequency filtering within a microwave-photonic link.Within multimode optomechanical waveguides, we engineer stimulated inter-modal Brillouin scattering (SIMS) to permit new degrees of control over the dynamics of photonphonon interactions. SIMS enables flexible optical signal routing by harnessing on-chip mode multiplexing, and intrinsically decouples Stokes and anti-Stokes processes to produce single-sideband optical amplification and energy transfer. These couplings are used to create a new kind of Brillouin laser, which produces Schawlow-Townes-like linewidth narrowing for phonons, despite the absence of an acoustic cavity or feedback mechanism. The dynamics of inter-modal Brillouin scattering also enable the experimental demonstration of optomechanical cooling within a continuous, traveling-wave system. Such operations represent an extension of existing cavity-optomechanical systems to the continuum limit.Finally, we utilize SIMS to produce nonreciprocal acousto-optic mode conversion within a multi-core optomechanical waveguide by utilizing a nonlocal inter-band Brillouin scattering (NIBS) process. Through this interaction, an optically-driven elastic wave mediates unidirectional light scattering through a nonreciprocal phase-matching condition. In contrast to prior resonant optomechanical structures, the bandwidth of this process is controlled through optical dispersion, permitting nonreciprocal operation over bandwidths as large as 150 GHz (1.2 nm). Depending on the desired operation scheme. the same reconfigurable device can be used to demonstrate unidirectional single-sideband modulation, widely-tunable narrowband microwave filtering and microwave and optical spectral analysis.Such advances demonstrate the utility of photon-phonon interactions within a wide array of integrated optical systems. Beyond this work, further refinement of these techniques may enable on-chip Brillouin-based signal processing operations with superb tunability. fidelity. and bandwidth.

ISBN: 9781392328743Subjects--Topical Terms:

3343996
Applied physics.
Subjects--Index Terms:

Brillovin Scattering

Harnessing Traveling-wave Photon-phonon Interactions in Integrated Waveguides.
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100 1 $a Kittlaus, Eric Andrew. $3 3550098
245 1 0 $a Harnessing Traveling-wave Photon-phonon Interactions in Integrated Waveguides.
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300 $a 292 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-01, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Rakich, Peter.
502 $a Thesis (Ph.D.)--Yale University, 2019.
506 $a This item must not be added to any third party search indexes.
506 $a This item must not be sold to any third party vendors.
520 $a By interfacing chip-based electrical circuits with optical waveguides. the field of integrated photonics seeks to create next-generation technologies for information processing. highspeed communications, and precision sensing. To this end. a considerable body of work over the past two decades has demonstrated high-performance waveguide-integrated modulators, filters, light sources, and detectors with potential advantages in terms of size, power consumption, performance, and cost over conventional benchtop systems.In this dissertation, we explore interactions between traveling photons and phonons within these integrated photonic circuits. By coupling optical and elastic degrees of freedom. we develop new functionalities not available within all-optical systems. We harness these techniques to demonstrate optical amplifiers, microwave filters. nonreciprocal devices, c:md signal-processing techniques within integrated silicon waveguides.Underpinning these interactions is a nonlinear optical effect called stimulated Brillouin scattering (SBS). While Kerr (electronic) and Raman (optical phonon-mediated) nonlinearities are well-known to be enhanced by sub-wavelength confinement in integrated waveguides, Brillouin nonlinearities. which are the strongest nonlinearity in optical fiber. were previously absent in semiconductor integrated photonic circuits. By designing new optomechanical waveguide structures which tightly confine light and sound, these nonlinearities become radically enhanced, making them not only measurable, but exceedingly strong and tailorable.Utilizing suspended waveguide designs, we describe the development of silicon waveguide-integrated Brillouin amplifiers that permit appreciable (>5 dB) optical amplification through forward SBS (FSBS). This process also enables a novel form of cascaded energy transfer between multiple coupled optical waves. In contrast to prior works, which painted a relatively bleak picture for Brillouin amplification in silicon. these results demonstrate great potential for efficient optomechanical signal processing within silicon waveguides.Beyond applications in nonlinear optics, we use these robust FSBS couplings to explore new concepts for acousto-optic signal processing through Brillouin-mediated coherent phonon generation. One such technique is realized using structures that couple two distinct optical waveguides to a common phonon mode. In this device, forward SBS is used to convert a microwave signal into an elastic wave, where the signal is filtered through the device's designed phononic transfer function. This signal then phase-modulates light guided in a separate waveguide, converting it back to the optical domain. This operation is used to demonstrate high-fidelity, ultn-1-narrowband radiofrequency filtering within a microwave-photonic link.Within multimode optomechanical waveguides, we engineer stimulated inter-modal Brillouin scattering (SIMS) to permit new degrees of control over the dynamics of photonphonon interactions. SIMS enables flexible optical signal routing by harnessing on-chip mode multiplexing, and intrinsically decouples Stokes and anti-Stokes processes to produce single-sideband optical amplification and energy transfer. These couplings are used to create a new kind of Brillouin laser, which produces Schawlow-Townes-like linewidth narrowing for phonons, despite the absence of an acoustic cavity or feedback mechanism. The dynamics of inter-modal Brillouin scattering also enable the experimental demonstration of optomechanical cooling within a continuous, traveling-wave system. Such operations represent an extension of existing cavity-optomechanical systems to the continuum limit.Finally, we utilize SIMS to produce nonreciprocal acousto-optic mode conversion within a multi-core optomechanical waveguide by utilizing a nonlocal inter-band Brillouin scattering (NIBS) process. Through this interaction, an optically-driven elastic wave mediates unidirectional light scattering through a nonreciprocal phase-matching condition. In contrast to prior resonant optomechanical structures, the bandwidth of this process is controlled through optical dispersion, permitting nonreciprocal operation over bandwidths as large as 150 GHz (1.2 nm). Depending on the desired operation scheme. the same reconfigurable device can be used to demonstrate unidirectional single-sideband modulation, widely-tunable narrowband microwave filtering and microwave and optical spectral analysis.Such advances demonstrate the utility of photon-phonon interactions within a wide array of integrated optical systems. Beyond this work, further refinement of these techniques may enable on-chip Brillouin-based signal processing operations with superb tunability. fidelity. and bandwidth.
590 $a School code: 0265.
650 4 $a Applied physics. $3 3343996
650 4 $a Optics. $3 517925
653 $a Brillovin Scattering
653 $a Optomechanics
653 $a Photonics
690 $a 0215
690 $a 0752
710 2 $a Yale University. $3 515640
773 0 $t Dissertations Abstracts International $g 81-01B.
790 $a 0265
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13918044