| Presentation | 1994/11/17 Time-domain optical phase reading in phase-modulated optical interferometers Shigeru Oho, Hisao Sonobe, Hiroshi Kajioka, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Time-domain characteristics of the output signal from optical interferometers were analized. The waveform moments of the interferometer signal were found to be dependent on the interferometer phase as the frequency spectra of the signal are. The peak positions of the time signal also vary with the interferometer phase, and a time-domain phase reading method that measures the peak shift was proposed. To demonstrate the time-domain technique, a phase-modulated fiber optic gyroscope and a peak-shift detection circuit were built. By modulating the original interferometer signal with a pulse train, the signal frequency was transfered to a lower one and the signal period was lengthend. With this equivalent-time scheme, the time- domain signal processing system achieved a resolution of 10^<-5> in interferometer phase reading. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Interferometry / Fiber optic gyroscope / Phase modulation / Time-domain signal processing |
| Paper # | CAS94-57,CST94-17 |
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| Conference Information | |
| Committee | CST |
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| Conference Date | 1994/11/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Concurrent System Technology (CST) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Time-domain optical phase reading in phase-modulated optical interferometers |
| Sub Title (in English) | |
| Keyword(1) | Interferometry |
| Keyword(2) | Fiber optic gyroscope |
| Keyword(3) | Phase modulation |
| Keyword(4) | Time-domain signal processing |
| 1st Author's Name | Shigeru Oho |
| 1st Author's Affiliation | The 5th System Dept., Hitachi research Laboratory, Hitachi, Ltd.() |
| 2nd Author's Name | Hisao Sonobe |
| 2nd Author's Affiliation | The 5th System Dept., Hitachi research Laboratory, Hitachi, Ltd. |
| 3rd Author's Name | Hiroshi Kajioka |
| 3rd Author's Affiliation | Optical Fiber Gyroscope Project, Takasago Branch, Hitaka-works, Hitachi Cable, Ltd. |
| Date | 1994/11/17 |
| Paper # | CAS94-57,CST94-17 |
| Volume (vol) | vol.94 |
| Number (no) | 333 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |