Sensitivity enhancement of Faraday effect based heterodyning fiber laser magnetic field sensor by lowering linear birefringence.

Optics express · 2013 · Benefit · Insufficient evidence

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BenefitInsufficient evidencePaper 3108

Study snapshot

PublicationOptics express · 2013

Study typeengineering

Reported directionBenefit

Evidence ratingInsufficient

Abstract

In this paper, we demonstrate that the sensitivity of Faraday effect based heterodyning fiber laser sensors for magnetic field can be effectively enhanced by lowering the intrinsic linear birefringence inside the fiber laser cavity. Well explained by theoretical analysis and confirmed by birefringence tuning through transversal force, it shows that the sensitivity to magnetic field intensity is inversely proportional to the linear birefringence. A CO(2)-laser treatment is therefore proposed to tune the intra-cavity linear birefringence. With CO(2)-laser treatment, the intra-cavity linear birefringence can be lowered permanently to effectively enhance the sensitivity of a heterodyning fiber laser sensor to magnetic field.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering

Effect directionbenefit

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

The paper reports that sensitivity of Faraday-effect-based heterodyning fiber laser magnetic field sensors can be enhanced by lowering intrinsic linear birefringence in the fiber laser cavity. Theoretical analysis and birefringence tuning via transversal force indicate sensitivity is inversely proportional to linear birefringence, and CO2-laser treatment is proposed and reported to permanently lower intra-cavity birefringence to enhance sensitivity.

Outcomes measured

Sensor sensitivity to magnetic field intensity
Intra-cavity linear birefringence (tuning/lowering)

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": "magnetic field sensor (Faraday effect based heterodyning fiber laser)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Sensor sensitivity to magnetic field intensity",
    "Intra-cavity linear birefringence (tuning/lowering)"
  ],
  "main_findings": "The paper reports that sensitivity of Faraday-effect-based heterodyning fiber laser magnetic field sensors can be enhanced by lowering intrinsic linear birefringence in the fiber laser cavity. Theoretical analysis and birefringence tuning via transversal force indicate sensitivity is inversely proportional to linear birefringence, and CO2-laser treatment is proposed and reported to permanently lower intra-cavity birefringence to enhance sensitivity.",
  "effect_direction": "benefit",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "Faraday effect",
    "heterodyning fiber laser",
    "magnetic field sensor",
    "sensitivity enhancement",
    "linear birefringence",
    "CO2-laser treatment",
    "birefringence tuning",
    "transversal force"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1364/oe.21.030156
PubMed: 24514594

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