JP2012517019A - 側面照射型多点式多重パラメータ光ファイバセンサ - Google Patents
側面照射型多点式多重パラメータ光ファイバセンサ Download PDFInfo
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- JP2012517019A JP2012517019A JP2011549204A JP2011549204A JP2012517019A JP 2012517019 A JP2012517019 A JP 2012517019A JP 2011549204 A JP2011549204 A JP 2011549204A JP 2011549204 A JP2011549204 A JP 2011549204A JP 2012517019 A JP2012517019 A JP 2012517019A
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- Fluid Mechanics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Optical Integrated Circuits (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Optical Transform (AREA)
Abstract
Description
本出願は、2009年1月30日に出願された米国特許仮出願第61/148,564号の利益を主張する。
該当なし
該当なし
a.ファイバセンサにおよそ5mm以下の高空間分解能を追加的に提供することができ、正確な検出位置をピンポイントで示すことが可能な、安価なプロービング光源;
b.自動化手段によって作製することができる安価で入手が容易な市販デバイスを使用した、費用対効果の高い光ファイバセンサ・システム;
c.電磁スペクトルの赤外、可視、および紫外領域にわたって使用することができる可撓性デバイス;
d.位置合わせが容易で、曲げおよびアンビエント光のような外部からの干渉による影響を受けない、頑丈なセンシング・デバイス;
e.様々な測定対象をモニターするように適合することができる、包括的な設計が必要とされる;
f.容易に検出されうる強い信号を生成することができる、蛍光ベースおよび吸収ベースのファイバのための強力でなおかつ費用対効果の高いプロービング光源;
g.進化する技術を用いて容易にアップデートすることをできる、モジュール方式のセンシング・システム設計;および
h.所定の測定対象を検出するためにファイバの表面上に固定された化学指示薬を必要としないセンシング・システム。
92a:特定のセンシングポイント
93:検体、測定対象媒体
96:元の光ファイバ
96a:市販の光ファイバ
98:センシングファイバ、感受性光ファイバ
98a:テーパードコアを持つ光ファイバセンサ
99:反応性フィルム、感受性フィルム
100:プロービング光源
100a:LED
100b:白色光源
101:保護ジャケット
101a:プラスチックジャケット
104:光学的信号
104a:蛍光
106:光ファイバコア、コア
106a:ガラスコア
107:テーパードコア
108:検出器
108a:光検出器
108b:シリコン光検出器
108c:分光計
109:光を通さない筺体
110:信号プロセッサ
111:読み出し
112:光検出器ケーブル
114:電源
116:光ファイバクラッド
116a:プラスチッククラッド
118:光ファイバの第2の末端
120:光ファイバの第1の末端
122:反射体
124:後方伝搬モード
128:テーパードコアとクラッドとの間の界面
132:光ファイバコネクタ
134:光ファイバ支持体
138:LEDのリニアアレイ
144:照射用光ファイバ
148:遠位の反射端面
150:照射光
152:ファイバの近位端
154:いくつかの長周期格子を持つ照射用光ファイバ
156:長周期格子
157:埋め込み型誘電体ミラーを持つ照射用ファイバ
158:照射用光ファイバの束縛モードコア
160:モノクロメータ
162:放射モード
164:光検出器のオス・コネクタ
168:読み出しユニットのメス・コネクタ
170:ディスプレイ
172:容器
174:液体
176:流体界面
178:空気
180:埋め込み型誘電体ミラー
Claims (21)
- 感受性光ファイバ(98)であって、
第1(120)および第2(118)の末端を持ち、
コア(106)を持ち、
化学ルミネッセンス、りん光、螢光を発する、光を散乱または吸収する物質を含んだ環境中に配置され、
前記環境と直接に接触し、かつ前記環境によって前記感受性光ファイバが光学的に影響を受ける前記ファイバの感受性領域として機能する、少なくとも1つの露出したコア領域(92)を持つ、前記感受性光ファイバ;
前記ファイバに付随する測定対象媒体(93、93’);
プロービング光を生成する少なくとも1つのプロービング光源(100)であって、前記プロービング光は、前記環境と相互作用する前記測定対象媒体によって実質的に支援されたときに変化したプロービング光を前記感受性領域から発生させるために、前記感受性領域における前記環境と相互作用し、
前記感受性領域に関連する高信号強度を持つ光信号(104)として前記コア中へ実質的に結合される、前記プロービング光源;
前記第1の末端(120)を出たときの前記光信号の受信のため、前記光信号の強度を所定の波長範囲にわたって測定するため、および前記強度を電気信号に関連付けるために、前記感受性光ファイバの前記第1の末端(120)と光学的に結合された検出器(108);ならびに
前記検出器(108)とデータ通信する信号プロセッサ(110)であって、
それによって、前記電気信号が、測定されている前記測定対象の量に関連付けられる、前記信号プロセッサ、
を備えるセンシング・システム。 - 前記信号プロセッサとデータ通信するディスプレイ、ならびに前記プロービング光源、前記信号プロセッサおよびディスプレイに電力を供給するように構成された電源(114)をさらに備える、請求項1に記載のセンシング・システム。
- 前記信号プロセッサとデータ通信するディスプレイ、ならびに前記プロービング光源、前記検出器、前記信号プロセッサおよびディスプレイに電力を供給するように構成された電源(114)をさらに備える、請求項1に記載のセンシング・システム。
- 前記感受性光ファイバは、少なくとも2つの感受性領域を提供するために、そのクラッド区間の少なくとも2つ(92)が除去されて、少なくとも1つの露出したコア領域(92)が前記環境と直接に接触しており;
前記プロービング光源は、それぞれの感受性領域を一度に1つ個別に照射し;
前記プロービング光は、変化したプロービング光がそこから発生するように、それぞれの前記感受性領域における前記環境と個別に光学的に相互作用し、それぞれのかかる変化は、前記環境における前記測定対象媒体(93)によって実質的に影響を受けた、
請求項1に記載のセンシング・システム。 - 前記感受性光ファイバは、少なくとも2つの感受性領域を提供するために、そのクラッド区間の少なくとも2つ(92)が除去されて、少なくとも1つの露出したコア領域(92)が前記環境と直接に接触しており;
前記プロービング光源は、2つ以上の感受性領域を同時に照射し;
前記プロービング光は、変化したプロービング光がそこから発生するように、それぞれの前記感受性領域における前記環境と光学的に相互作用し、それぞれのかかる変化は、前記環境における前記測定対象媒体(93)によって実質的に影響を受けた、
請求項1に記載のセンシング・システム。 - 前記プロービング光源は、それぞれの感受性領域を一度に1つ個別に照射する、請求項1に記載のセンシング・システム。
- 前記光源は、前記感受性領域が照射されることを可能にするのに十分な、前記感受性領域から任意の距離に置くことができる、請求項1に記載のセンシング・システム。
- 前記感受性領域には化学指示薬のない、1Aに記載のセンシング・システム。
- 前記センシングファイバ(98)は、その元のファイバクラッド(116)を含むファイバを備える、請求項1に記載のセンシング・システム。
- 前記センシングファイバ(98)は、前記元のファイバクラッド上に被覆された感受性フィルム(99)を含む、請求項Gに記載のセンシング・システム。
- 前記測定対象媒体は、色、濁度、検体および屈折率のうちの1つを備える、請求項1に記載のセンシング・システム。
- 前記環境は、前記ファイバコアの1つと前記光源との間および前記ファイバコアの後ろに位置する、請求項1に記載のセンシング・システム。
- 前記ファイバコアは、前記環境によって取り囲まれている、請求項1に記載のセンシング・システム。
- 前記プロービング光の、前記測定対象媒体を持つ前記環境との前記光学的相互作用は、光吸収,散乱,および蛍光、りん光ならびに化学ルミネッセンスのうちの1つを結果として生じる、請求項1に記載のセンシング・システム。
- 前記検体は、前記環境と化学的に相互作用し、かくして前記環境の色に変化を生み出す、請求項1に記載のセンシング・システム。
- 前記感受性光ファイバは、異なった屈折率の環境を区別するために屈折計を備える、請求項1に記載のセンシング・システム。
- 前記感受性光ファイバは、前記センサと接触している液体の前記レベルを測定するために動作可能である、請求項1に記載のセンシング・システム。
- 前記センシング・システムは、それぞれの前記センシングポイントが異なった測定対象を検出することが可能な多点式光ファイバセンサである、請求項1に記載のセンシング・システム。
- 前記センシング・システムは、複数の測定対象を検出するためにそれぞれの前記センシングポイントが異なった波長の複数の光源によって照射される多点式光ファイバセンサである、請求項1に記載のセンシング・システム。
- 前記プロービング光は、照射用光ファイバによって送信され、前記照射用ファイバは、複数の誘電体ミラー(180)を持ち、前記照射用ファイバは、前記感受性光ファイバに平行して置かれ、前記誘電体ミラーは、離散的な位置における前記感受性光ファイバの前記感受性領域をある角度で照射する、センシング・システムであって、プロービング光源は、プロービング光をモノクロメータ中へ導入し、前記モノクロメータは、前記プロービング光を特定の波長へフィルタ処理し、特定の波長における前記プロービング光は、前記照射用光ファイバへ軸方向に導入され、特定の波長における前記プロービング光は、同様の波長特性を持つその特定の誘電体ミラーへ伝搬し、かつ前記特定の誘電体ミラーは、前記感受性ファイバの前記感受性領域の方へある角度で前記プロービング光の方向を変え、前記誘電体のそれぞれは、前記照射用光ファイバの前記束縛モードコアからの光を特定の波長における放射モードへ結合させるように設計され、特定の波長の前記放射モードは、前記感受性クラッド領域を照射する、請求項1に記載のセンシング・システム。
- 前記照射されるファイバの区間は、そのクラッドが除去され、クラッドが除去された前記区間は、前記感受性ファイバを照射するための束縛および漏洩モードとして前記照射用ファイバの前記コア中へそれらの光を結合させる、複数のプロービング光源によって側面照射される、請求項20に記載のセンシング・システム。
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