JPS6052598U

JPS6052598U - Measuring device

Info

Publication number: JPS6052598U
Application number: JP14241283U
Authority: JP
Inventors: 井田　芳明
Original assignee: 三菱電機株式会社
Priority date: 1983-09-13
Filing date: 1983-09-13
Publication date: 1985-04-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の計測装置を示す構成図、第２図はこの考
案の一実施例の構晟図、第３図は光ファイバの構成図、
第４図〜第６図は他の実施例の構成図である。図におい
て、１は光源、２は第１の光ファイバ、４は偏光子、５
は検出素子、７は検光子、１２．１３は光受信器、１４
〜１６は演算器、１７は第２の光ファイバ、１８は第２
の光ファイバである。なお各図中同一符号は同−又は相
当部分を示す。Fig. 1 is a block diagram showing a conventional measuring device, Fig. 2 is a block diagram of an embodiment of this invention, Fig. 3 is a block diagram of an optical fiber,
FIGS. 4 to 6 are configuration diagrams of other embodiments. In the figure, 1 is a light source, 2 is a first optical fiber, 4 is a polarizer, and 5 is a light source.
is a detection element, 7 is an analyzer, 12.13 is an optical receiver, 14
~16 is a computing unit, 17 is a second optical fiber, and 18 is a second
is an optical fiber. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) A light source, a first optical fiber that transmits the light from this light source, a polarizer that keeps the polarization plane of the light emitted from this optical fiber constant, a detection element whose optical characteristics change depending on the physical quantity to be measured, and this detection element. an analyzer that splits the transmitted light into two vertically polarized components; a second optical fiber that transmits the first polarized component from the analyzer; and a second optical fiber that transmits the second polarized component from the analyzer and a third optical fiber whose optical loss is approximately the same as the optical loss of the second optical fiber; an optical receiver arranged at the output ends of the second and third optical fibers for photoelectric conversion; and each electric power of this optical receiver. A measuring device equipped with a calculator that calculates the ratio between the sum and difference of outputs.

(2) The first, second and third optical fibers are formed by connecting every other optical fiber of each of the cables in which 2n optical fibers are arranged concentrically, where n is an integer of 3 or more. The measuring device according to claim 1, characterized in that it is used as a bundle of two pieces at a time.

(3) Utility model registration claim 1, characterized in that the second and third optical fibers are arranged in parallel in the longitudinal direction on the flat surface of a flat tape-like member and fixed with a protective layer. Measuring device as described.

(4) Claims for registration of a utility model characterized in that the first, second, and third optical fibers are arranged in parallel in the longitudinal direction of the flat surface of a flat tape-like member and fixed with a protective layer. The measuring device according to item 1.

(5) Utility model registration claim 1, characterized in that two cores with a square cross section are arranged in parallel and placed in the same cladding layer with a rectangular cross section to form the second and third optical fibers. Measuring device described in section.