A Light-Controlled Oscillator Using InAlAs/InGaAs High Electron Mobility Transistor (Joint Special Issue on Heterostructure Microelectronics with TWHM 2000)
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概要
- 論文の詳細を見る
In this report we demonstrate the characteristics of the opt-electrical transducer that is newly designed for a fiber-optic wireless access system. This transducer consists of a monolithic microwave integrated circuit (MMIC) oscillator whose oscillation frequency is over 30GHz. The active element of the oscillator is an InAlAs/InGaAs high electron mobility transistor (HEMT). The shift of frequency is observed when we illuminate 1.55 μm wavelength light onto the HEMT area. The size of the frequency shift is-150MHz/mW, and it does not change as a function of gate bias conditions. We also confirm that the oscillator is able to respond with an optical signal of 500MHz, which is sufficiently fast to achieve 156 Mbit/s communication. If this transducer is introduced into the base station (BS) of a fiber-optic wireless access system, a high-speed optical modulator no longer has to be incorporated into the control station. As a result, the configuration of the system becomes simpler than that of Radio on Fiber. We constructed a system that adopts the frequency shift keying technique with application of the transducer into the BS and then performed a transmission experiment at 5 Mbit/s. The demodulated data is sufficiently clear to distinguish high from low. Therefore, we can put forth that the fabricated transducer is a promising candidate as a device for the BS of a fiber-optic millimeter-wave wireless access system.
- 社団法人電子情報通信学会の論文
- 2001-10-01
著者
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Hoshino Koichi
Research Laboratory Denso Corporation
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Miyake Y
Osaka Electro-communication Univ. Neyagawa‐shi Jpn
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Miyake Yasuyuki
Research Laboratory Denso Corporation