| Presentation | 2005/1/19 Optical response of microwave transistors and their applications to high-speed optical detectors Daisuke NAKATA, Hiroshi MURATA, Yasuyuki OKAMURA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Optical mixing in microwave transistors has been studied and their applications to high-speed optical signal detectors and mixers are reported. Optical responses of commercially available microwave transistors (GaAs-HEMT, C～Ku band, low noise and small signal amplification) by irradiation of a focused laser beam with a wavelength of 633～785nm were measured by use of an optical microscope and a precisely controlled X-Y stage. Both increase and decrease of a drain current of the HEMT were observed by changing the position of the irradiation spot of the laser beam. The small signal gain was also changed over 5dB by the irradiation of the focused laser beam to near the gate electrodes of the HEMT. Utilizing these optical responses of the HEMT by light irradiation, the detection of intensity modulated light with the modulated frequency of 13～17GHz and the conversion to IF (～1GHz) signals were experimentally demonstrated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | microwave transistor / HEMT / optical mixing / optical detection |
| Paper # | PN2004-76,OFT2004-82-1,LQE2004-130 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 2005/1/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Lasers and Quantum Electronics (LQE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical response of microwave transistors and their applications to high-speed optical detectors |
| Sub Title (in English) | |
| Keyword(1) | microwave transistor |
| Keyword(2) | HEMT |
| Keyword(3) | optical mixing |
| Keyword(4) | optical detection |
| 1st Author's Name | Daisuke NAKATA |
| 1st Author's Affiliation | Division of Advanced Electronics and Optical Science, Department of Systems Innovation Graduate School of Engineering Science, Osaka University() |
| 2nd Author's Name | Hiroshi MURATA |
| 2nd Author's Affiliation | Division of Advanced Electronics and Optical Science, Department of Systems Innovation Graduate School of Engineering Science, Osaka University |
| 3rd Author's Name | Yasuyuki OKAMURA |
| 3rd Author's Affiliation | Division of Advanced Electronics and Optical Science, Department of Systems Innovation Graduate School of Engineering Science, Osaka University |
| Date | 2005/1/19 |
| Paper # | PN2004-76,OFT2004-82-1,LQE2004-130 |
| Volume (vol) | vol.104 |
| Number (no) | 609 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |