JPH0461036U

JPH0461036U -

Info

Publication number: JPH0461036U
Application number: JP10369990U
Authority: JP
Priority date: 1990-10-02
Filing date: 1990-10-02
Publication date: 1992-05-26

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す構成図、第
２図はこの考案の別の実施例を示す構成図、第３
図はこの考案のさらに別の実施例を示す構成図、
第４図は従来の装置を示す構成図である。図に於いて１は光源、２は光パルス、４は光結
合器、５は光フアイバ、１５はビームスプリツタ
、１６は分岐した第１の光パルス、１７はミラー
、１８は光減衰器、１９は分岐した第２の光パル
ス、２０は光合成器、２１は光分配器、２２は分
岐した第１の光パルス、２３は分岐した第２の光
パルス、２４は光ピークパワー検出器、２６は微
動台駆動回路、２７は電動式微動台、２９は電気
式光減衰器である。なお、図中同一または相当部
分には同一符号を付して示してある。 Fig. 1 is a block diagram showing one embodiment of this invention, Fig. 2 is a block diagram showing another embodiment of this invention, and Fig. 3 is a block diagram showing another embodiment of this invention.
The figure is a configuration diagram showing yet another embodiment of this invention.
FIG. 4 is a configuration diagram showing a conventional device. In the figure, 1 is a light source, 2 is an optical pulse, 4 is an optical coupler, 5 is an optical fiber, 15 is a beam splitter, 16 is a branched first optical pulse, 17 is a mirror, 18 is an optical attenuator, 19 is a branched second optical pulse, 20 is a light combiner, 21 is an optical distributor, 22 is a branched first optical pulse, 23 is a branched second optical pulse, 24 is an optical peak power detector, 26 2 is a fine movement table drive circuit, 27 is an electric fine movement table, and 29 is an electric optical attenuator. It should be noted that the same or equivalent parts in the drawings are designated by the same reference numerals.

Claims

[Claims for Utility Model Registration] (1) An optical splitter that splits the optical pulse emitted from the light source into a first optical pulse and a second optical pulse;
a delay optical path that provides a time delay to the first optical pulse; a light combiner that combines the optical pulse output from the delay optical path with a second optical pulse branched by the optical splitter; and an output of the optical splitter. An optical reception sensitivity measuring device comprising: an optical attenuator that adjusts the intensity of the first optical pulse or the second optical pulse. (2) an optical coupler that couples the optical pulse emitted from the light source to the optical fiber; a motorized fine movement table that holds the optical coupler; and an optical coupler that couples the optical pulse in the optical fiber to the first optical pulse and the second an optical splitter that branches the optical pulse into the first optical pulse, an optical peak power detector that outputs a signal proportional to the peak value of the first optical pulse, and an optical peak power detector that outputs a signal proportional to the peak value of the first optical pulse, and An optical reception sensitivity measuring device comprising: a fine movement table drive circuit that adjusts the amount of fine movement of the electric fine movement table. (3) an optical splitter that branches the optical pulse in the optical fiber into a first optical pulse and a second optical pulse; and an optical peak power that outputs a signal proportional to the peak value of the first optical pulse. a detector, a delay line that provides a time delay to the second optical pulse, and an electric light that adjusts the intensity of the peak value of the optical pulse that has passed through the delay line in accordance with the output of the optical peak power detector. An optical reception sensitivity measuring device comprising: an attenuator.