KR937000861A

KR937000861A - Waterproof Fiber Optic Chemical Sensor

Info

Publication number: KR937000861A
Application number: KR1019920702295A
Authority: KR
Inventors: 스탠리 엠. 클라이너; 디립 케이. 단자; 키쇼로이 고스와미
Original assignee: 존 씨. 프랜시스; 파이버켐, 인코포레이티드
Priority date: 1990-03-28
Filing date: 1991-03-27
Publication date: 1993-03-16

Abstract

내용 없음.No content.

Description

Waterproof Fiber Optic Chemical Sensor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 표면에 방수성의 소수성 체인이 부착되어 있는 광섬유 화학센서(FOCS)의 단면도이다,1 is a cross-sectional view of a fiber optic chemical sensor (FOCS) with a waterproof hydrophobic chain attached to its surface.

제2도는 스트리프된(striped) 클래드와 클래드 스트리프(stripe)사이의 틈(gap)에 부착된 방수성 소수성 체인을 갖는 FOCS의 단면도이다.2 is a cross-sectional view of a FOCS with a waterproof hydrophobic chain attached to a gap between the striped clad and the clad stripe.

제3도는 두꺼운 간격의 소수성 물질 단편(segment)및 두꺼운 단편 사이의 틈에 있는 박층의 소수성 물질로 덮여있는 FOCS의 단면도이다.3 is a cross-sectional view of a FOCS covered with thick spaced hydrophobic segments and a thin layer of hydrophobic material in the gap between the thick segments.

Claims

Optical fiber and optical fiber clad on it (a number of hydrophobic chains are attached to the surface of the optical fiber chemical sensor and extend to allow extraction of water molecules from the sensor surface while allowing the preselected analyte to reach the sensor surface) Waterproof optical fiber chemical sensor device comprising an optical fiber chemical sensor having a.

The device of claim 1, wherein the clad is a substantially uniform clad on the sensor surface and the hydrophobic chain is attached substantially uniformly onto the oald.

The device of claim 2, wherein the optical fiber chemical sensor is a refractive index sensor wherein the clad is a thin metal clad.

The cladding of claim 1, wherein the clad comprises a plurality of spaced strips separated by gaps, and a hydrophobic chain is attached to the gaps and extends on the clad strips to substantially clad the strips. Apparatus for extracting water molecules from the clad covering the leaf.

The apparatus of claim 4 wherein the clad comprises a plurality of thin metal strips or strips of organic or organometallic or inorganic sensing material.

6. The apparatus of claim 5 wherein the clad comprises a plurality of thin platinum strips.

The device of claim 1, wherein the hydrophobic chain is a silane polymer.

8. The device of claim 7, wherein the silane polymer is an alkyltrialkoxysilane polymer.

The device of claim 8, wherein the silane polymer is octadecyltrimethoxysilane or octyltrimethoxysilane.

The device of claim 1 wherein the hydrophobic chain is a silane polymer having the general formula:

Wherein R 1 and R 2 are each selected from the group consisting of alkyl, alkylaryl and aryl.

The device of claim 10, wherein R ₁ and R ₂ are each selected from C ₁ to C ₆ chain alkyl, phenyl, tolyl and benzyl.

The device of claim 1, wherein the hydrophobic chain is a tetrafluoroethylene polymer.

The device of claim 1 wherein the hydrophobic chain is a copolymer of tetrafluoroethylene with partially fluorinated or fully fluorinated alkyl or aryl or alkylaryl vinyl ethers or vinyl esters.

The device of claim 1 comprising a fluorescent tip on the optical fiber sensor.

The device of claim 1 comprising a refractive tip on the optical fiber sensor.

2. The apparatus of claim 1, wherein the optical fiber sensor has a dual end shape having an input end and an output end.

A method of making a fiber optic sensor waterproof, comprising attaching a plurality of hydrophobic long chains to the side surface of the sensor so that the preselected analyte molecules selectively reach the sensor surface while extracting water molecules.

18. The method of claim 17 comprising attaching the hydrophobic chain substantially uniformly to the optical fiber clad of the sensor.

18. The method of claim 17, further comprising making the sensor a clad containing a plurality of spaced strips separated by a gap and attaching a hydrophobic chain to the gap.

20. The method of claim 19, further comprising depositing the clads using a primary mask and attaching the hydrophobic chain using a secondary mask that is complementary to the primary mask;

18. The method of claim 17, further comprising attaching the hydrophobic chain by forming a patterned coating of alternating thick and thin segments of the hydrophobic chain.

※ Note: The disclosure is based on the initial application.