横穴の極化維持用K型繊維の特徴化,同時分散圧力および温度感知用
Optics express
|February 20, 2026
まとめ
この研究では,水静圧と温度を同時に測定するための新しい光ファイバーセンサーを導入しています. この突破は,エネルギーとインフラストラクチャのモニタリングに不可欠な,困難な環境における正確な分散型センシングを可能にします.
科学分野:
- 光電子学とフォトニック
- 光ファイバーセンサー技術
- センサーのための材料科学
背景:
- 分散型センシングは,マルチパラメータ測定のための堅牢な方法を必要とします.
- 既存のファイバーセンサーは,同時に圧力と温度を識別するのに苦労しています.
- 偏極化を維持する繊維は,繊細な光学測定の鍵です.
研究 の 目的:
- ポーラライゼーションを維持するK型サイドホールファイバー (SHF) を開発し,同時に分散した圧力と温度を感知する.
- SHF設計を最適化して,高差圧感度と安定した極化を実現する.
- 光学周波数領域反射計 (OFDR) を使用して圧力と温度効果の正確な分離を証明する.
主な方法:
- 特殊な円型コア方向を持つ新しいK型サイドホール繊維を使用しました.
- レイリー逆分散を利用した光学周波数域反射計 (OFDR) を採用した.
- スペクトルシフト分析とパラメータ分離のための2チャンネル多項式モデルを開発した.
主要な成果:
- 直角極化モード間で記録的な高差圧感度 (-1.9 GHz/MPaと0.7 GHz/MPa) を達成しました.
- 圧力範囲全体で安定した偏振分離が実証され,補償を防ぐ.
- ~0.1°Cと~0.1 MPaの精度で,圧力と温度を同時に分散測定した.
結論:
- 開発されたSHFセンサは,レイリーベースの最初の分散型同時圧力および温度測定を可能にします.
- センサーは,高圧感度,熱安定性,極化選択性により,信頼性の高い動作を可能にします.
- この技術は,エネルギー貯蔵,石油/ガス,および構造的健康モニタリングのアプリケーションのための多パラメータ光ファイバーセンサーを進歩させる.
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