On-chip high sensitivity laser frequency sensing with Brillouin mutually-modulated cross-gain modulation

Gao, Feng; Pant, Ravi; Li, Enbang; Poulton, Christopher G.; Choi, Duk‐Yong; Madden, Steve; Luther‐Davies, Barry; Eggleton, Benjamin J.

doi:10.1364/cleo_si.2013.cm1l.3

Cited by 3 publications

(6 citation statements)

References 10 publications

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“…The rib structure had a cross section of 4 μm × 0.85 μm (see Fig. 9), which resulted in an effective Schematic of the chalcogenide photonic chip along with calculated optical and acoustic modes in the rib waveguide [58]. On-chip SBS was generated using a pump, which gets backscattered from the acoustic phonons resulting in SBS at large pump powers.…”

Section: 1a Chalcogenide Waveguidesmentioning

confidence: 99%

“…In recent years, there has been a remarkable surge of interest in SBS, largely driven by the ability to harness the effect on the nanoscale. The ability to generate SBS in chip-scale nano-photonic devices [50][51][52][53][54][55] has opened a plethora of opportunities for photonic integration of applications such as Brillouin lasers and microwave generation and signal processing [56][57][58][59][60][61], tailoring the interaction between light and sound [53][54][55], Brillouin cooling, and opto-mechanics [62,63].…”

Section: Introductionmentioning

confidence: 99%

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Inducing and harnessing stimulated Brillouin scattering in photonic integrated circuits

2013

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Doc. ID 195152) We review recent progress in inducing and harnessing stimulated Brillouin scattering (SBS) in integrated photonic circuits. Exciting SBS in a chip-scale device is challenging due to the stringent requirements on materials and device geometry. We discuss these requirements, which include material parameters, such as optical refractive index and acoustic velocity, and device properties, such as acousto-optic confinement. Recent work on SBS in nano-photonic waveguides and micro-resonators is presented, with special attention paid to photonic integration of applications such as narrow-linewidth lasers, slowand fast-light, microwave signal processing, Brillouin dynamic gratings, and nonreciprocal devices.

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Section: 1a Chalcogenide Waveguidesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inducing and harnessing stimulated Brillouin scattering in photonic integrated circuits

2013

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“…A variety of micro-and nano-scale systems have recently been used to enhance and tailor the interaction between photons and phonons through engineerable structures and materials [1][2][3][4][5][6][7][8][9][10][11][12] . In the quantum limit, highly controlled photon-phonon couplings permit ground state cooling of microscopic optomechanical systems [13][14][15][16] , and offer a unique quantum interface between the optical, microwave, and phononic domains 17,18 .…”

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confidence: 99%

Control of coherent information via on-chip photonic–phononic emitter–receivers

et al. 2015

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Rapid progress in integrated photonics has fostered numerous chip-scale sensing, computing and signal processing technologies. However, many crucial filtering and signal delay operations are difficult to perform with all-optical devices. Unlike photons propagating at luminal speeds, GHz-acoustic phonons moving at slower velocities allow information to be stored, filtered and delayed over comparatively smaller length-scales with remarkable fidelity. Hence, controllable and efficient coupling between coherent photons and phonons enables new signal processing technologies that greatly enhance the performance and potential impact of integrated photonics. Here we demonstrate a mechanism for coherent information processing based on travelling-wave photon–phonon transduction, which achieves a phonon emit-and-receive process between distinct nanophotonic waveguides. Using this device, physics—which supports GHz frequencies—we create wavelength-insensitive radiofrequency photonic filters with frequency selectivity, narrow-linewidth and high power-handling in silicon. More generally, this emit-receive concept is the impetus for enabling new signal processing schemes.

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“…In the following we obtain an analytic approximation for the lifetime of the acoustic leaky modes of step-index circular waveguides. The acoustic mode of a cylindrical waveguide of radius a for the m-th azimuthal order can be written in transverse polar coordinates ρ(r, θ) = AJ m (k 1 r)e imθ for r < a BH (1) m (k 2 r)e imθ for r ≥ a , (10) where k 1 = Ω 2 /v 2 1 − q 2 , k 2 = Ω 2 /v 2 2 − q 2 , and H…”

Section: Appendixmentioning

confidence: 99%

“…Although SBS is traditionally associated with very long lengths of optical fibres, a number of recent experiments have demonstrated and exploited SBS in much shorter devices, including microtoroids, microspheres, and wedge-profiled microdisks [2][3][4], integrated optical waveguides [5] and multi-structured optical fibres [6]. These demonstrations open the door to a number of important on-chip applications, such as tunable microwave photonic filters [7,8], ultra-sensitive frequency sensors [9,10], compact generators of slow and fast light [11,12] and all-optical isolation [13,14]. In on-chip devices, SBS also provides a means of accessing the quantum optomechanical regime [15].…”

Section: Introductionmentioning

confidence: 99%

Acoustic confinement and stimulated Brillouin scattering in integrated optical waveguides

2013

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We examine the effect of acoustic mode confinement on Stimulated Brillouin Scattering in optical waveguides that consist of a guiding core embedded in a solid substrate. We find that SBS can arise due to coupling to acoustic modes in three different regimes. First, the acoustic modes may be guided by total internal reflection; in this case the SBS gain depends directly on the degree of confinement of the acoustic mode in the core, which is in turn determined by the acoustic V-parameter. Second, the acoustic modes may be leaky, but may nevertheless have a sufficiently long lifetime to have a large effect on the SBS gain; the lifetime of acoustic modes in this regime depends not only on the contrast in acoustic properties between the core and the cladding, but is also highly dependent on the waveguide dimensions. Finally SBS may occur due to coupling to free modes, which exist even in the absence of acoustic confinement; we find that the cumulative effect of coupling to these non-confined modes results in significant SBS gain. We show how the different acoustic properties of core and cladding lead to these different regimes, and discuss the feasibility of SBS experiments using different material systems.

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On-chip high sensitivity laser frequency sensing with Brillouin mutually-modulated cross-gain modulation

Cited by 3 publications

References 10 publications

Inducing and harnessing stimulated Brillouin scattering in photonic integrated circuits

Inducing and harnessing stimulated Brillouin scattering in photonic integrated circuits

Control of coherent information via on-chip photonic–phononic emitter–receivers

Acoustic confinement and stimulated Brillouin scattering in integrated optical waveguides

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