| Project/Area Number |
62850049
|
|---|
| Research Category |
Grant-in-Aid for Developmental Scientific Research
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
電子材料工学
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
IMAI Masaaki Faculty of Engineering, Hokkaido University, 工学部, 助教授 (80002103)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
黒羽 敏明 古河電気工業(株), 千葉研究所, 技師長
ODAJIMA Akira Dept. of Electrical Engineering, Hokkaido Institute of Technology, 電気工学科, 教授 (20001117)
KUROHA Toshiaki Chiba Research Laboratory, The Furukawa Electric
|
|---|
| Project Period (FY) |
1987 – 1988
|
| Project Status |
Completed (Fiscal Year 1988)
|
| Budget Amount *help |
¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1988: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1987: ¥3,200,000 (Direct Cost: ¥3,200,000)
|
|---|
| Keywords | Optical fiber / Piezoelectric copolymer / Phase modulator / 光波センシング |
|---|
| Research Abstract |
An all-fiber phase modulator that is an integrated modulator into optical fibers was made by coating single-mode fibers with a vinylidene fluoride/trifluoroethylene copolymer [P(VDF_x/TrFE_<100-x>), x = 73mol%] radially poled. The optical performance of the fiber os a phase modulator was demonstrated over a wide frequency range from 20 Hz to 50 MHz. A phase sensitivity of 2.1 x 10^<-5>rad/(V/m) per meter of fiber was measured in the low frequency region and 3.5 x 10^<-6>rad/(V/m)/m in the high frequency region. The optical response at frequencies higher than 1 MHz was found to be no longer flat and dominated by radial resonances of the fiber-jacket composite. A qualitative agreement exists between analysis and experimental data, especially, on the appearance of the double peaks measured at 7 and 18 MHz due to radial resonances.
|
