JPS58122464A - Spectrum analyzer - Google Patents
Spectrum analyzerInfo
- Publication number
- JPS58122464A JPS58122464A JP384582A JP384582A JPS58122464A JP S58122464 A JPS58122464 A JP S58122464A JP 384582 A JP384582 A JP 384582A JP 384582 A JP384582 A JP 384582A JP S58122464 A JPS58122464 A JP S58122464A
- Authority
- JP
- Japan
- Prior art keywords
- spectrum
- electric signal
- frequency
- wavelength
- converted
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
- G01R23/17—Spectrum analysis; Fourier analysis with optical or acoustical auxiliary devices
Landscapes
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
Description
【発明の詳細な説明】
（１）発明の技術分野
本発明はスペクトルアナライザに関し、特に、電気信号
の周波数スペクトルを時間に対するスペクトルに変換す
る装置に関する。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a spectrum analyzer, and more particularly to an apparatus for converting the frequency spectrum of an electrical signal into a spectrum with respect to time.
（２）発明の背景並びに従来技術
電子機器の実験あるいは試験等にお匹て、かかる実験あ
るいは試験に用いられ為電気信号あるいは、実験あるい
は試験において得られ良電気信号が複数の周波数成分を
含む場合、かかる電気信号の周波数スペクトルを時間に
対するスペクトルに変換して、例えはオシロスコープ等
で観測するととがで１れば好ましい場合がある。(2) Background of the invention and prior art In relation to experiments or tests on electronic equipment, when an electrical signal used in such an experiment or test or a good electrical signal obtained in an experiment or test contains multiple frequency components. In some cases, it may be preferable to convert the frequency spectrum of such an electrical signal into a spectrum with respect to time and observe it with an oscilloscope or the like, so that there is no difference.
しかしながら、このように電気信号の周波数スペクトル
を時間に対するスペクトルに変換する手段はいまだ提案
されていない。However, no means for converting the frequency spectrum of an electrical signal into a time spectrum has yet been proposed.
釦 発明の目的
本発明は、前述の如き、複数の周波数成分を含む電気信
号を、時間に対するスペクトルに変換することができる
手段を提供しょうとするｔのである・
（４）発明の構成
このため、本発明によれば、電気信号の周波数スペクト
ルを光の波長スペクＩＫ変換する素子と、前記変換素子
の出力端に接続され九波長分散の大Ｉな光伝送路とを含
むことを特徴とするスペクトルアナライザが、提供され
る。Button Purpose of the Invention The present invention aims to provide a means capable of converting an electrical signal including a plurality of frequency components into a time spectrum as described above. (4) Structure of the invention Therefore, According to the present invention, the spectrum is characterized by including an element that converts the frequency spectrum of an electrical signal into an optical wavelength spectrum (IK), and an optical transmission line connected to the output end of the conversion element and having a large IK wavelength dispersion of 9 wavelengths. An analyzer is provided.
（５）発明の実施例 以下本発明を実施例ｔ−もって詳細に説明する。(5) Examples of the invention The present invention will be explained in detail below with reference to Example t.
第１ＩＩは本発明にかかるスペクトルアナライザの基本
的構成を示す。Part 1II shows the basic configuration of the spectrum analyzer according to the present invention.
同図において、１１は電気信号の５ｒＩＬ数スペクトル
を対応する波長の光の透過率に変換する素子（以下電気
−光変換素子と称する）、１２は波長分散の大１！ｉ単
一モードの光伝送路、１３は光−電気変換素子である。In the figure, 11 is an element (hereinafter referred to as an electro-optical conversion element) that converts the 5rIL number spectrum of an electric signal into the transmittance of light of the corresponding wavelength, and 12 is a large wavelength dispersion element 1! i is a single mode optical transmission line; 13 is a photo-electrical conversion element;
このような構成において、電気−光変換素子】ｌに白色
光パルス１４を入力し、且つ該電気−光変換素子１１に
、複数の周波数成分を含む所望の電気信号を印加すると
、電気−光変換素子１１更に光伝送路１２から取り出さ
れる光は前記電気信号の周波数成分が時間に対するスペ
クトルとして出力される。図において１５は出力光を示
す。かかる出力光１５は光−電気変換素子１３において
再び電気信号に変換される。In such a configuration, when a white light pulse 14 is input to the electro-optic conversion element 11 and a desired electrical signal containing a plurality of frequency components is applied to the electro-optic conversion element 11, electro-optic conversion occurs. The light extracted from the element 11 and the optical transmission line 12 is outputted as a spectrum of the frequency components of the electric signal with respect to time. In the figure, 15 indicates output light. The output light 15 is converted into an electrical signal again in the optical-electrical conversion element 13.
このような構成において、前記電気−光変換素子は、例
えば第２図に示される構成を有する。In such a configuration, the electro-optical conversion element has the configuration shown in FIG. 2, for example.
同図において、２１は例えばリチウムナイオペー）（Ｌ
ＩＮｂＯｓ）からなる基体、２２ ｍ、 ２２ ｂｔ
ｉ前記基体１１の主面に例えばチタン（ＴＩ ）の拡散
によって形成された光伝送路、２３は前記光伝送路上に
これとほぼ直交する如く配設された電極である。In the figure, 21 is, for example, lithium niope) (L
Substrate consisting of INbOs), 22 m, 22 bt
i An optical transmission path is formed on the main surface of the substrate 11 by, for example, diffusion of titanium (TI), and 23 is an electrode disposed on the optical transmission path so as to be substantially perpendicular thereto.
このような電気−光変換素子において、一方の光伝送路
２２１の一端ＩＬから白色光を入力し、電極２３に電気
信号に対応した超音波信号を印加すると、前記超音波信
号の周波数すなわち電気信号の周波数に対応した波長の
光は偏向を受けて他方の光伝送路２２ｂへ伝送される。In such an electro-optical conversion element, when white light is input from one end IL of one optical transmission line 221 and an ultrasonic signal corresponding to an electric signal is applied to the electrode 23, the frequency of the ultrasonic signal, that is, the electric signal The light having the wavelength corresponding to the frequency is deflected and transmitted to the other optical transmission line 22b.
そして、かかる光伝送路２２１の一端ＯＬに接続された
単一モード光伝送路（第１図の１４）例えば光ファイノ
（によって出力される。かかる光ファイノ（内にあって
は、被伝送光はその波長によって被伝送速度に差を生じ
、特定波長毎に時間的にずれを生じて当該光ファイバか
ら出力される。Then, it is outputted by a single mode optical transmission line (14 in FIG. 1) connected to one end OL of the optical transmission line 221, for example, an optical fiber. The transmission speed varies depending on the wavelength, and each specific wavelength is outputted from the optical fiber with a time lag.
すなわち前記電極２３に対し、第３図に示される如き周
波数スペクトル（成分）を有する電気信号に対応した超
音波信号を印加すると、出力光として、第４図に示され
る知音時間に対する波長スペクトルを有する光出力を得
ることができる。That is, when an ultrasonic signal corresponding to an electric signal having a frequency spectrum (component) as shown in FIG. 3 is applied to the electrode 23, the output light has a wavelength spectrum corresponding to the sound detection time shown in FIG. Light output can be obtained.
かかる出力光は、前記光−電気変換素子例えばアバラン
シェ７オトダイオード（ＡＰＤ）等によって電気信号に
変換され、オシロスコープ等へ入力可能とされる。This output light is converted into an electrical signal by the optical-to-electrical conversion element, such as an avalanche 7 autodiode (APD), and can be input to an oscilloscope or the like.
（６） 発明の効果
以上のように本発明によれば、複数の周波数成分を含む
電気信号を、容１に時間に対するスペクトルに替換する
ことができる。(6) Effects of the Invention As described above, according to the present invention, an electrical signal including a plurality of frequency components can be converted into a spectrum with respect to time.
第１図は本発明にかかるスペクトルアナライザの基本構
成を示す概念図、第２図は本発明にかかる電気−光変換
素子の一例を示す外観斜視図、第３図は複数の周波数成
分を含む電気信号の周波数スペクトルを示す曲線図、第
４図は本発明Ｋかかるスペクトルアナライザからの出力
光の状態を示す曲線図である。
図において、１１・・・電気信号の周波数スペクトルを
光の波長スペクトルに変換する素子】２・・・単一モー
ドの光伝送線路
１３・・・光−電気変換素子
第 １ 図
！！８２ 図
ｚｂFIG. 1 is a conceptual diagram showing the basic configuration of a spectrum analyzer according to the present invention, FIG. 2 is an external perspective view showing an example of an electro-optical conversion element according to the present invention, and FIG. FIG. 4 is a curve diagram showing the frequency spectrum of a signal. FIG. 4 is a curve diagram showing the state of output light from the spectrum analyzer according to the present invention. In the figure, 11... an element that converts the frequency spectrum of an electrical signal into a wavelength spectrum of light] 2... a single mode optical transmission line 13... an optical-to-electrical conversion element Fig. 1! ! 82 Figure zb
Claims (1)
換する素子と、前記変換素子の出力端に接続された波長
分散の大きな光伝送路とを含むことを特命とするスペク
トルアナライザ。A spectrum analyzer specially designed to include an element that converts the frequency spectrum of an electrical signal into a wavelength spectrum of light, and an optical transmission line with large wavelength dispersion connected to the output end of the conversion element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP384582A JPS58122464A (en) | 1982-01-13 | 1982-01-13 | Spectrum analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP384582A JPS58122464A (en) | 1982-01-13 | 1982-01-13 | Spectrum analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58122464A true JPS58122464A (en) | 1983-07-21 |
Family
ID=11568516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP384582A Pending JPS58122464A (en) | 1982-01-13 | 1982-01-13 | Spectrum analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58122464A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4777433A (en) * | 1986-07-02 | 1988-10-11 | Steele Robert J | Spectrum analyzer |
| FR2634560A1 (en) * | 1988-07-19 | 1990-01-26 | France Etat Armement | ELECTRO-OPTICAL MEASUREMENT SYSTEMS FOR FREQUENTIAL ANALYSIS OF VERY BROADBAND SIGNALS |
-
1982
- 1982-01-13 JP JP384582A patent/JPS58122464A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4777433A (en) * | 1986-07-02 | 1988-10-11 | Steele Robert J | Spectrum analyzer |
| FR2634560A1 (en) * | 1988-07-19 | 1990-01-26 | France Etat Armement | ELECTRO-OPTICAL MEASUREMENT SYSTEMS FOR FREQUENTIAL ANALYSIS OF VERY BROADBAND SIGNALS |
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