JPH01142825U - - Google Patents
Info
- Publication number
- JPH01142825U JPH01142825U JP4087788U JP4087788U JPH01142825U JP H01142825 U JPH01142825 U JP H01142825U JP 4087788 U JP4087788 U JP 4087788U JP 4087788 U JP4087788 U JP 4087788U JP H01142825 U JPH01142825 U JP H01142825U
- Authority
- JP
- Japan
- Prior art keywords
- light
- spectrum
- measured
- optical
- measuring device
- 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
- 238000001228 spectrum Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000003595 spectral effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000002452 interceptive effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Spectrometry And Color Measurement (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案に係る光スペクトル測定装置の
一実施例を示す構成ブロツク図、第２図は本考案
に係る光スペクトル測定装置の第２の実施例を示
す構成ブロツク図、第３図は従来の光スペクトル
測定装置の一例を示す構成ブロツク図、第４図は
ノイズが重畳する場合に第３図装置が出力するス
ペクトル特性を示す図、第５図はノイズが無い場
合に第３図装置が出力するスペクトル特性を示す
図、第６図は第３図装置のスペクトル線幅の測定
誤差特性を示す特性曲線図である。
１６……受光素子、１９……光遮蔽手段、Ｗ…
…スペクトル線幅。
FIG. 1 is a block diagram showing an embodiment of an optical spectrum measuring device according to the present invention, FIG. 2 is a block diagram showing a second embodiment of an optical spectrum measuring device according to the present invention, and FIG. 3 is a block diagram showing a second embodiment of an optical spectrum measuring device according to the present invention. A configuration block diagram showing an example of a conventional optical spectrum measurement device. Fig. 4 is a diagram showing the spectrum characteristics output by the device in Fig. 3 when noise is superimposed. Fig. 5 is a diagram showing the spectral characteristics output by the device in Fig. 3 when there is no noise. FIG. 6 is a characteristic curve diagram showing the measurement error characteristics of the spectral line width of the device shown in FIG. 3. 16... Light receiving element, 19... Light shielding means, W...
...spectral linewidth.
Claims (1)
他方の光と干渉して生じる光ビート信号を受光素
子で検出しその周波数スペクトルからスペクトル
線幅を測定する光スペクトル測定装置において、
受光素子に入射する光を遮蔽する光遮蔽手段を備
え、光遮蔽手段が開閉した状態で測定した各スペ
クトルデータ同士を引算することにより周波数ス
ペクトルからノイズ成分を除去するように構成し
たことを特徴とする光スペクトル測定装置。 (2) 被測定光を２分した光のいずれか一方に周
波数シフトを加える請求項１記載の光スペクトル
測定装置。[Claims for Utility Model Registration] (1) The light to be measured is divided into two, one of the lights is delayed, and the optical beat signal generated by interfering with the other light is detected by a light receiving element, and the spectral linewidth is determined from the frequency spectrum. In an optical spectrum measurement device that measures
It is characterized by comprising a light shielding means for shielding light incident on the light receiving element, and configured to remove noise components from the frequency spectrum by subtracting each spectrum data measured with the light shielding means open and closed. Optical spectrum measuring device. (2) The optical spectrum measuring device according to claim 1, wherein a frequency shift is applied to one of the two light beams obtained by dividing the light to be measured into two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4087788U JPH01142825U (en) | 1988-03-28 | 1988-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4087788U JPH01142825U (en) | 1988-03-28 | 1988-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01142825U true JPH01142825U (en) | 1989-09-29 |
Family
ID=31267334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4087788U Pending JPH01142825U (en) | 1988-03-28 | 1988-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01142825U (en) |
-
1988
- 1988-03-28 JP JP4087788U patent/JPH01142825U/ja active Pending
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