Ultra-simple fiber sensor with ultra-low strain cross-sensitivity for embedded temperature detection

Chen, Siyuan; Han, Yanhua; Li, Jinjian; Li, Changxu; Liu, Yi; Li, Yan

doi:10.1016/j.ijleo.2022.170028

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…There are two main ways for external modulation technology to generate optically‐borne MMW Cascaded modulator modulation to generate MMW signals, The parallel modulator modulates to generate a MMW signal. Literature [ 12,13 ] describes a method for generating 32‐tupling terahertz waves and obtaining output signals consisting mainly of ±16th order sidebands, with the extinction ratios of the MZMs all set above 60 dB. Some schemes use semiconductor optical amplifiers (SOA) devices and optical filters to realize four‐wave mixing to generate MMW signals, which have large spontaneous noise and low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Photon Generation Scheme of 32‐Fold Millimeter‐Wave Signal Based on Mach‐Zehnder Modulator

Wang,

Ren

et al. 2024

Annalen der Physik

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This paper proposes a 32‐tupling frequency millimeter‐wave (MMW) filter‐free system based on four Mach‐Zehnder Modulators (MZM) connected in parallel and cascaded with a simple radio‐fiber (RoF) link structure. The four MZMs are all at the maximum transmission point (MATP), and the radio frequency (RF) driving voltage phase difference between MZMs is π /2. The center carrier is suppressed by using an optical attenuator (OATT) and an optical phase shifter (OPS). Two parallel MZMs can generate ±8th order and ±12th order optical sidebands, and the ±4th order optical sidebands can be suppressed by adjusting the modulation index m of the MZM, using cascaded two dual‐parallel MZMS(DPMZM) and the phase difference of the RF signal source is π/4 to generate ±16th order optical sidebands. The theoretical analysis and simulation experiments are performed for the scheme proposed in this paper. The results show that the simulated and theoretical values of the optical sideband suppression ratio (OSSR) for ±16th order optical sideband signals are 60.02 and 59.96 dB, respectively, and the simulated and theoretical values of the RF sideband suppression ratio (RFSSR) for the 32‐tupling MMW signal are 56.34 and 53.94 dB, respectively.

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Section: Introductionmentioning

confidence: 99%

Photon Generation Scheme of 32‐Fold Millimeter‐Wave Signal Based on Mach‐Zehnder Modulator

Wang,

Ren

et al. 2024

Annalen der Physik

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Sensitivity-enhanced temperature sensor utilizing core offset and hollow core Bragg fiber

Zhao

Zuo

et al. 2023

Optical Fiber Technology

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Dual-parameter fiber sensor for temperature and strain based on SMS-FP composite structure

Chen,

He,

et al. 2023

Mod. Phys. Lett. B

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A dual-parameter sensor for simultaneous strain and temperature measurement is proposed and demonstrated based on the introduction of higher-order modes in a single-mode-multimode-single-mode (SMS) structure cascaded with a Fabry–Perot (FP) cavity as a compact and low-cost fiber optic sensor. In this structure, a multimode fiber is spliced between two single-mode fibers, and the single-mode fiber at the other end is fusion spliced to the HF-corroded single-mode fiber to form the SMS-FP cascade structure. Light transmitted from the multimode fiber to the FP cavity can couple light into the cladding, introducing higher-order modes into modal interference. Moreover, multiple-beam interference generates spectra. The experimental results indicate that the sensor performs effectively within the range of 150∘C–250∘C and 0–875[Formula: see text][Formula: see text]. The strain sensitivities of SMS and FP were found to be −2.45 and −2.34[Formula: see text]pm/[Formula: see text], respectively, and their temperature sensitivities are 11.85 and 5.59[Formula: see text]pm/∘C, respectively. The interesting features of the sensor include good operating linearity, compact size, high sensitivity, simple structure and low cost.

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Ultra-simple fiber sensor with ultra-low strain cross-sensitivity for embedded temperature detection

Cited by 3 publications

References 22 publications

Photon Generation Scheme of 32‐Fold Millimeter‐Wave Signal Based on Mach‐Zehnder Modulator

Photon Generation Scheme of 32‐Fold Millimeter‐Wave Signal Based on Mach‐Zehnder Modulator

Sensitivity-enhanced temperature sensor utilizing core offset and hollow core Bragg fiber

Dual-parameter fiber sensor for temperature and strain based on SMS-FP composite structure

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