JPH0285355U - - Google Patents
Info
- Publication number
- JPH0285355U JPH0285355U JP16395688U JP16395688U JPH0285355U JP H0285355 U JPH0285355 U JP H0285355U JP 16395688 U JP16395688 U JP 16395688U JP 16395688 U JP16395688 U JP 16395688U JP H0285355 U JPH0285355 U JP H0285355U
- Authority
- JP
- Japan
- Prior art keywords
- gas sensor
- transmission loss
- linear gas
- cladding layer
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005253 cladding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 3
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 239000011347 resin Substances 0.000 claims 2
- 229920005989 resin Polymers 0.000 claims 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000013307 optical fiber Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Description
第１図は本実施例に係る線状ガスセンサの断面
図、第２図はその斜視図、第３図は線状ガスセン
サをトンネル内に設置した状態を示す概説図であ
る。
図面中、１０は線状ガスセンサ、１１はコア、
１２はクラツド層、１３はトンネル、ＯＴＤＲは
光後方散乱測定器である。
FIG. 1 is a sectional view of the linear gas sensor according to this embodiment, FIG. 2 is a perspective view thereof, and FIG. 3 is a schematic view showing the linear gas sensor installed in a tunnel. In the drawing, 10 is a linear gas sensor, 11 is a core,
12 is a cladding layer, 13 is a tunnel, and OTDR is an optical backscattering measuring device.
Claims (1)
周に被覆する樹脂からなるクラツド層とから構成
される光フアイバであつて、上記クラツド層を構
成する樹脂にガスと反応して着色し且つ伝送損失
を増大させる伝送損失剤が含有されてなることを
特徴とする線状ガスセンサ。 (2) 請求項１記載の線状ガスセンサにおいて、
伝送損失剤がカルバゾリル基を有する化合物であ
ることを特徴とする線状ガスセンサ。[Claims for Utility Model Registration] (1) An optical fiber consisting of a core made of quartz glass and a cladding layer made of resin covering the outer periphery of the core, the resin constituting the cladding layer being coated with gas. A linear gas sensor characterized by containing a transmission loss agent that reacts with color and increases transmission loss. (2) In the linear gas sensor according to claim 1,
A linear gas sensor characterized in that the transmission loss agent is a compound having a carbazolyl group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16395688U JPH0285355U (en) | 1988-12-20 | 1988-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16395688U JPH0285355U (en) | 1988-12-20 | 1988-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0285355U true JPH0285355U (en) | 1990-07-04 |
Family
ID=31449140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16395688U Pending JPH0285355U (en) | 1988-12-20 | 1988-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0285355U (en) |
-
1988
- 1988-12-20 JP JP16395688U patent/JPH0285355U/ja active Pending
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