Brillouin optical correlation domain analysis with 4 millimeter resolution based on amplified spontaneous emission

Cohen, Raphael; London, Yosef; Antman, Yair; Zadok, Avi

doi:10.1364/oe.22.012070

Cited by 78 publications

(74 citation statements)

References 24 publications

(41 reference statements)

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“…The flip side of these large sensitivities is that opto-and electromechanical systems may generate exquisite sensors of various perturbations. Amongst others, current sensor research takes aim at inertial and mass sensing [275][276][277] as well as local temperature [278] and geometry mapping [279][280][281][282].…”

Section: E General Challengesmentioning

confidence: 99%

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Safavi-Naeini

Thourhout

Baets

et al. 2019

Optica

172

167

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Radio-frequency communication systems have long used bulk-and surface-acoustic-wave devices supporting ultrasonic mechanical waves to manipulate and sense signals. These devices have greatly improved our ability to process microwaves by interfacing them to orders-ofmagnitude slower and lower loss mechanical fields. In parallel, long-distance communications have been dominated by low-loss infrared optical photons. As electrical signal processing and transmission approaches physical limits imposed by energy dissipation, optical links are now being actively considered for mobile and cloud technologies. Thus there is a strong driver for wavelength-scale mechanical wave or "phononic" circuitry fabricated by scalable semiconductor processes. With the advent of these circuits, new micro-and nanostructures that combine electrical, optical and mechanical elements have emerged. In these devices, such as optomechanical waveguides and resonators, optical photons and gigahertz phonons are ideally matched to one another as both have wavelengths on the order of micrometers. The development of phononic circuits has thus emerged as a vibrant field of research pursued for optical signal processing and sensing applications as well as emerging quantum technologies. In this review, we discuss the key physics and figures of merit underpinning this field. We also summarize the state of the art in nanoscale electro-and optomechanical systems with a focus on scalable platforms such as silicon. Finally, we give perspectives on what these new systems may bring and what challenges they face in the coming years. In particular, we believe hybrid electro-and optomechanical devices incorporating highly coherent and compact mechanical elements on a chip have significant untapped potential for electro-optic modulation, quantum microwave-tooptical photon conversion, sensing and microwave signal processing.

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Section: E General Challengesmentioning

confidence: 99%

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Safavi-Naeini

Thourhout

Baets

et al. 2019

Optica

172

167

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“…Much effort is being dedicated to the enhancement of spatial resolution, driven by potential applications in the civil engineering, transportation, and aerospace sectors. Both time-domain and correlation-domain analysis protocols (B-OTDA and B-OCDA, respectively) had achieved cm-and even mm-scale resolution [5][6][7][8][9][10][11][12] . However, high-resolution Brillouin analysis still faces two inherent challenges: a) gain over short segments of fibers is weak, leading to poor signal-to-noise ratios (SNRs) and compromised sensitivity; b) the scanning over a large number of resolution points in B-OCDA requires prohibitively long experimental durations.…”

Section: Introductionmentioning

confidence: 99%

Brillouin analysis with 8.8 km range and 2 cm resolution

et al. 2015

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Brillouin analysis of a 8.8 km-long fiber with 2 cm resolution is reported. Pump and signal are jointly modulated by a binary phase Golomb code. Over 2,000 correlation peaks are simultaneously introduced and interrogated in a single trace. All 440,000 resolution points are covered in just 211 scans of peaks positions. The pump wave is amplitude modulated by a second, 10,000 bits long code. Post-processing of the output signal provides a measurement signal-tonoise ratio that is equivalent to that of 5,000 single-pulse acquisitions. A 7cm-long hot spot is identified. The uncertainty in Brillouin frequency measurements is ±3.5 MHz.

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“…In addition, Zou et al [11] successfully obtained 34-m measurement range with a 10-cm spatial resolution based on dual frequency modulations. The amplified spontaneous emission of an optical fiber amplifier was employed in noise-based BOCDA with 4-mm resolution and 2-m range by Cohen et al [17], and for the phase-coded BOCDA system, Denisov et al [18] realized a spatial resolution of 14-mm over the distance of 17.5-km. London et al [19] acquired over a 2.2 km-long fiber with a spatial resolution of 2-cm based on dual-layer hierarchal encoding of both amplitude and phase.…”

Section: Introductionmentioning

confidence: 99%

Incoherent Brillouin Optical Time-Domain Reflectometry With Random State Correlated Brillouin Spectrum

Zhang

Liu

et al. 2015

IEEE Photonics J.

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An incoherent Brillouin optical time-domain reflectometry with random state correlated Brillouin spectrum is proposed and experimentally demonstrated for the first time, which is based on a newly developed broadband random light source (chaotic laser) with a bandwidth of four times of the Brillouin spectral width in fiber. A variable optical delay line is introduced to provide location distribution of the temperature or strain in the fiber to replace the optical pulse generator. By adjusting the reference light path, the correlation of the same random state of the Stokes light and the pump light will be measured in the form of the Brillouin spectrum. The spatial resolution is inversely proportional to the bandwidth of the chaotic laser, and hence, the pump wave and Stokes wave are correlated to each other by their identical random state. The experimental result shows a 0.96-m spatial resolution (limited by the bandwidth of the chaotic laser) over a 155-m sensing range.

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Brillouin optical correlation domain analysis with 4 millimeter resolution based on amplified spontaneous emission

Cited by 78 publications

References 24 publications

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Brillouin analysis with 8.8 km range and 2 cm resolution

Incoherent Brillouin Optical Time-Domain Reflectometry With Random State Correlated Brillouin Spectrum

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