| Project/Area Number |
26706016
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (A)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Research Field |
Optical engineering, Photon science
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
KASAI KEISUKE 東北大学, 電気通信研究所, 助教 (80534495)
|
|---|
| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥20,410,000 (Direct Cost: ¥15,700,000、Indirect Cost: ¥4,710,000)
Fiscal Year 2015: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2014: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
|
|---|
| Keywords | レーザー / 周波数安定化 / ファブリーペロー共振器 / コヒーレント光通信 / ファブリペロー共振器 |
|---|
| Outline of Final Research Achievements |
With the aim of applying to next generation ultra-multilevel coherent optical communication, I have developed a 1.5 um frequency-stabilized laser with a high optical signal-to-noise ratio, a narrow linewidth, and low intensity noise characteristics. As an optical frequency standard, I have developed a compact and stable Fabry-Perot etalon with a linewidth as narrow as 60 MHz, which was made of a low expansion complex material based on crystal. As a coherent laser for frequency stabilization, I have constructed a 295 mW output, single frequency fiber laser with a linewidth of 5 kHz, relative intensity noise (RIN) of less than -120 dB/Hz. Furthermore, a laser diode with a linewidth of 8 kHz and a RIN of -130 dB/Hz has been developed. By stabilizing their frequency to the peak of etalon, I have successfully realized a low noise coherent laser with a frequency stability of 1E-12. In addition, I have applied these lasers to coherent optical transmission and demonstrated their usefulness.
|
