JP2007024561A - マイクロ計測器 - Google Patents
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12004—Combinations of two or more optical elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/4133—Refractometers, e.g. differential
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
- G01J3/26—Generating the spectrum; Monochromators using multiple reflection, e.g. Fabry-Perot interferometer, variable interference filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12083—Constructional arrangements
- G02B2006/1213—Constructional arrangements comprising photonic band-gap structures or photonic lattices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12133—Functions
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Abstract
【解決手段】本発明は、フォトニック結晶を用いて極微少量の計測が可能で、かつ外部に分光器等を必要とせず、従って超小型で低コストな、生化学計測等に応用可能な屈折率測定装置を提供する。
本発明のマイクロ計測器は、単一波長の光源と、位置に依存して共鳴波長の異なる微小共振器と、位置が検出できる光検出器から構成される。被測定物質の屈折率に応じて変化する光の透過位置を検出し、位置情報から屈折率を測定する。これにより、大掛かりな分光装置を用いることなく屈折率を測定することが可能となる。
【選択図】図6
Description
図6(A)−(D)は、本発明の実施例1の屈折率センサーの構成を示す図でありセンサー)は平面図、(B)はA−A位置で矢印方向に見た断面図、(C)はB−B位置で矢印方向に見た断面図、(D)はC−C位置で矢印方向に見た断面図である。
実施例2では、フォトニック結晶部100を一次元フォトニック結晶から二次元フォトニック結晶に変更した例を示す。
本願発明の実施例3の屈折率センサーの構成を図13(A)−(C)に示す。(A)は平面図、(B)は、(A)のA−A位置で矢印方向に見た断面図、(C)は(A)のB−B位置で矢印方向に見た断面図である。実施例3も実施例1と同様、試料セル2が基板1上に係止片3をガイドとして着脱自在に保持される。また、試料セル2には試料導入部200とこれに連なる一次元フォトニック結晶部100、および、開口部300および400が設けられる。実施例3では、試料セル2に形成される一次元フォトニック結晶部100は、線形の薄板101,102および103で形成される。薄板101,102および103は、実施例2と同様に、それぞれの間隔は等しく作成されるが、対向する薄板103間は長さ方向で間隔が異なるようになされる。実施例3では、開口部300には複数のLED302を所定の間隔で配列したLEDアレイ301が、実施例1の半導体レーザー10および導波路20に代えて配置される。さらに、開口部400には複数のレンズ402を所定の間隔で配列したレンズアレイ401と、複数のフォトダイオード404を所定の間隔で配列したフォトダイオードアレイ403とが、実施例1のフォトダイオード41,42,43および44に代えて配置される。ここで、複数のLED302の間隔と複数のレンズ402の間隔および複数のLED302の間隔と複数のフォトダイオードの間隔とが等しいものであることはいうまでも無い。
実施例4では、本願発明のマイクロ計測器をマイクロ化学チップに搭載した例を示す。マイクロ化学チップとは、試料の混合、輸送、加熱、抽出といった化学反応の諸操作をMEMS技術を用いてオンチップ化する技術である。オンチップ化することにより単なる小型化・少量化に留まらず、微小化に伴う反応の高効率化も期待されている。
Claims (5)
- 光源と共振器と受光装置から構成される計測装置であって、共振器内部に被測定物質が導入される構成であり、共振器の共鳴波長の変化を検知することにより、被測定物質の屈折率を検知することを特徴とするマイクロ計測器。
- 位置に依存して共鳴波長が変化する機能を有する複数の共振器あるいは共振器アレイと、前記共振器に光を入射する単一波長の光源と、共振器を透過する光の強度と位置を検出する複数の受光器あるいは受光器アレイとから構成され、光が透過した位置を特定することにより、被測定物質の屈折率を検知することを特徴とするマイクロ計測器。
- 前記共振器が、所定の屈折率の材料と被測定試料の流れる部分を測定光の波長オーダーの周期で繰り返した構造からなるフォトニック結晶とフォトニック結晶の内部に設けられた周期構造の不均一部分から構成されている請求項2に記載のマイクロ計測器。
- 前記共振器を構成するフォトニック結晶が所定の屈折率の材料の層と被測定試料の流れる空間とが交互に重畳された一次元フォトニック結晶であるとともに、被測定試料の流れる位置に応じて前記フォトニック結晶の内部に設けられた周期構造の不均一部分の構成を異にする請求項3に記載のマイクロ計測装置。
- 位置に依存して共鳴波長が変化する機能を有する複数の共振器あるいは共振器アレイと、前記共振器に光を入射する単一波長の光源と、共振器を透過する光の強度と位置を検出する複数の受光器あるいは受光器アレイとから構成され、光が透過した位置を特定することにより、被測定物質の屈折率を検知することを特徴とするマイクロ計測器であって、
前記複数の共振器あるいは共振器アレイと前記光源および複数の受光器あるいは受光器アレイとが異なった基板上に形成されていることを特徴とするマイクロ計測装置。
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JP2005203967A JP4118901B2 (ja) | 2005-07-13 | 2005-07-13 | マイクロ計測器 |
US11/485,294 US7450789B2 (en) | 2005-07-13 | 2006-07-13 | Micro sensor device |
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JP2005203967A JP4118901B2 (ja) | 2005-07-13 | 2005-07-13 | マイクロ計測器 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPWO2013187022A1 (ja) * | 2012-06-12 | 2016-02-04 | パナソニックIpマネジメント株式会社 | 光学的センサ |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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SE531493C2 (sv) | 2006-10-31 | 2009-04-28 | Knut Johansen | Sensor |
US20100279886A1 (en) * | 2007-04-03 | 2010-11-04 | University Of Rochester | Two-dimensional photonic bandgap structures for ultrahigh-sensitivity biosensing |
DE102008014335B4 (de) * | 2008-03-14 | 2009-12-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zur Bestimmung einer Brechzahl eines Messobjekts |
TWI418775B (zh) | 2010-04-23 | 2013-12-11 | Ind Tech Res Inst | 具光子晶體結構之檢測器 |
TWI443433B (zh) * | 2011-03-17 | 2014-07-01 | Nat Univ Tsing Hua | 一種光子晶體之調控方法 |
DE102011111604B4 (de) * | 2011-08-25 | 2023-01-19 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Strahlungsemittierendes Halbleiterbauelement |
GB201207881D0 (en) | 2012-05-04 | 2012-06-20 | Isis Innovation | Active chemical sensing using optical microcavity |
EP3408656B1 (en) | 2016-01-26 | 2023-06-07 | Danmarks Tekniske Universitet | Cuvette used for measuring the refractive index of a sample with a spectrophotometer and corresponding method |
GB201609017D0 (en) * | 2016-05-23 | 2016-07-06 | Isis Innovation | Characterisation of particles |
ES2786875A1 (es) * | 2019-04-12 | 2020-10-13 | Univ Catalunya Politecnica | Deteccion multibanda de multiples analitos en el infrarojo mediante el uso de cristales fotonicos basados en silicio macroporoso |
EP4148469A1 (en) * | 2021-09-14 | 2023-03-15 | Cambridge Enterprise, Ltd. | Photonic crystal-based sensor |
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JPH0240537A (ja) | 1988-07-29 | 1990-02-09 | Nec Corp | 屈折率変化測定装置 |
US5651047A (en) * | 1993-01-25 | 1997-07-22 | Cardiac Mariners, Incorporated | Maneuverable and locateable catheters |
JPH07198604A (ja) | 1993-12-29 | 1995-08-01 | Shimadzu Corp | 屈折率測定装置 |
AU2001293015A1 (en) * | 2000-09-25 | 2002-04-08 | Massachusetts Institute Of Technology | Optical micro-cavity sensors |
US20040069948A1 (en) * | 2000-12-18 | 2004-04-15 | Arno Feisst | Device and method for analysing the qualitative and/or quantitative composition of liquids |
WO2004100327A2 (en) * | 2003-03-05 | 2004-11-18 | California Institute Of Technology | Photonic crystal laser sources for chemical detection |
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JPWO2013187022A1 (ja) * | 2012-06-12 | 2016-02-04 | パナソニックIpマネジメント株式会社 | 光学的センサ |
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US7450789B2 (en) | 2008-11-11 |
JP4118901B2 (ja) | 2008-07-16 |
US20070014505A1 (en) | 2007-01-18 |
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