Application measurements using picosecond time-gate in a gain-switched semiconductor laser
| Project/Area Number |
25420413
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Measurement engineering
|
|---|
| Research Institution | Osaka Prefecture University |
|---|
Principal Investigator |
WADA Kenji 大阪府立大学, 工学(系)研究科(研究院), 准教授 (40240543)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
|
|---|
| Keywords | 半導体レーザー / ピコ秒パルス / 利得変調 / 戻り光誘起雑音 / 時間ジッター / 光学距離計測 / 温度計測 / 光学距離測定 / 利得変調パルス |
|---|
| Outline of Final Research Achievements |
We found that the cross-correlation information of picosecond optical pulses from a gain-switched semiconductor laser could be extracted from the amplified spontaneous emission noise intensity in the delayed optical feedback system. Using the system, a simple method to measure single-mode optical fiber lengths was proposed and demonstrated using a gain-switched 1550 nm distributed feedback (DFB) laser without a fast photodetector or an optical interferometer. The measurement precision reached eight digits. Also using the system, a simple method to measure the timing jitter of a DFB laser or a Fabry-Perot (FP) laser was proposed and demonstrated. The values of timing jitter in the DFB and FP lasers operating under the given pumping parameters were estimated to be 6 ps and less than 1 ps, respectively.
|
Report
(4 results)
Research Products
(40 results)
