FBGセンサーの高精度デモドレーションは,平行FBGを搭載した調整可能なMichelsonインターフェロメーターに基づいています
Optics letters
|February 13, 2026
まとめ
この研究では,調節可能なFBGとMichelsonインターフェロメーターを使用して,新しいファイバーブラッグ格レーティング (FBG) デモドレーションスキームを導入しています. このシステムは,高精度な温度とストレスの測定のための例外的な精度を達成します.
科学分野:
- オプトエレクトロニクス (光電子機器)
- ファイバー光学センサーです.
- インターフェロメトリー (インターフェロメトリー)
背景:
- ファイバー・ブラッグ・グリット (FBG) は,センシング・アプリケーションに不可欠です.
- 高精度のデモジュレーションは,正確なFBGベースの測定に不可欠です.
- 既存の方法は,高速と精度の両方を達成する上で課題に直面しています.
研究 の 目的:
- FBGのための高精度信号解調スキームを開発する.
- FBGベースのセンシングシステムの精度と速度を向上させる.
- 調節可能なFBGとインターフェロメトリーを活用して,波長のシフト再構築を改善します.
主な方法:
- ミシェルソン干渉計 (MI) とピエゾ電気トランスデューサー (PZT) を併設して調節した,多波長調節可能なFBG (CMWT-FBG) を利用しました.
- Savitzky-Golay (S-G) のフィッティングアルゴリズムを使用して,干渉信号の封筒ピークを正確に位置づけました.
- 感知FBGの波長変化をカバーすることで,感知FBGの中央波長変動を再構築した.
主要な成果:
- 1.33×10−6°Cの温度精度を達成しました.
- 1.04×10−5のストレイン精度を示した.
- CMWT-FBGs-MIシステムは,高速かつ高精度な測定において競争上の優位性を示した.
結論:
- 提案されたスキームは,FBG信号のデモジュレーションの有意な進歩を提供します.
- このシステムは,高精度センサーアプリケーションのための堅牢なプラットフォームを提供します.
- この研究は,先進的な光学センサー技術のさらなる開発をサポートします.
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