Optical phase control of an optically injection-locked FET microwave oscillator

Esman, R.D.; Goldberg, L.; Weller, J. F.

doi:10.1109/22.40994

Cited by 40 publications

(9 citation statements)

References 23 publications

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“…Applying 200 for , which was obtained experimentally [15], the injection power estimated from (3) was 30 dB lower than that from (2). This is because the frequency response of photodetection was restricted by a longer minority carrier lifetime in the HEMT, which affected the internal photovoltaic effect [12], which in turn affected the large optical gain obtained near the dc region.…”

Section: A Setupmentioning

confidence: 86%

“…The locking range for small signal injection is derived using Adler's equation [10], and expressed as (3) where frequency of the illuminated oscillator; external quality factor of the oscillator; and power of the injected signal and oscillator output, respectively [2]. Then, considering the second term of (1), (3) can be rewritten as (4) where is a parameter that includes coupling efficiency and photo-responsivity.…”

Section: B Optical Injection-locking Rangementioning

confidence: 99%

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Optical injection locking of a 38-GHz-band InP-based HEMT oscillator using a 1.55-μm DSB-SC modulated lightwave

Furuta

Maeda²,

Nomoto³

et al. 2001

IEEE Microw. Wireless Compon. Lett.

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Optical injection locking was experimentally performed using a 38-GHz-band InP-based HEMT MMIC oscillator and a 1.55-m lightwave. Two optical modulation schemes were compared for optical injection locking, and no difference was found except for the optical modulation frequency. With suppressed carrier modulation of the lightwave, phase noise of less than 73.2 dBc/Hz at a 10-kHz frequency offset and a 14-MHz locking range were achieved.

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Section: A Setupmentioning

confidence: 86%

Section: B Optical Injection-locking Rangementioning

confidence: 99%

Optical injection locking of a 38-GHz-band InP-based HEMT oscillator using a 1.55-μm DSB-SC modulated lightwave

Furuta

Maeda²,

Nomoto³

et al. 2001

IEEE Microw. Wireless Compon. Lett.

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show abstract

“…[29] The relative phase φ between the oscillator and the optically injected locking signal is adjusted by optically tuning the oscillator frequency. The locking characteristics have been described, such as the locking bandwidth (2.6 MHz), phase tuning range (187 o ), phase modulation (β = 0.69 at 500 kHz), and optical tuning (125 MHz).…”

Section: Comparison Of the Phase Shifters Implemented By Using Opticamentioning

confidence: 99%

Novel delay-time tunable pulsed laser source

Lin

Chang

2001

SPIE Proceedings

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We propose for the first time the in-situ frequency discriminating and continuous phase-tuning of the microwave signal or pulse-train generated from directly modulated laser diode with respect to a free-running microwave clock by integrating a DC-voltage controlled optoelectronic phase shifter (OEPS) with the laser source. This technology facilitates the combination of the frequency synchronization and the phase shifting functions in one circuit. The transferred function of the phase shift versus the controlling voltage is linear with a maximum phase-tuning range and a tuning slope of up to 3.6π (640 o ) and 90 o /volt, respectively. The fluctuation and drift in phase of the controlled signal is about 0.05 o and 0.003 o /min. The tuning resolution of 0.2 o at a 3-mV increment of the controlling voltage is achieved by using a high-precision voltage regulator. Relative timing jitter of the controlled optical microwave clock is less than 5 ps. By using the delay-time tunable pulsed laser, we demonstrate for the first time the delay-line-free electro-optic sampling of the waveforms, which are RF sinusoidal and pulse signals with repetition rate of 500 MHz. The maximum sampling range and highest sampling resolution are about 1.9 periods and 0.2 ps/mV, respectively.

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“…To this purpose, the optically synchronized oscillator [ 1,2] is an efficient approach which naturally filters the signal far from the carrier, thus removing the additional noise due to the optical link. Moreover, an optically controlled oscillator delivers a constant output power, which is an interesting feature for a clock or reference frequency delivering network.…”

Section: Introductionmentioning

confidence: 99%

Optically synchronized oscillators for low phase noise microwave and RF frequency distribution

Martinez-Reyes¹,

Quadri²,

Parenty³

et al. 2003

33rd European Microwave Conference Proceedings (IEEE Cat. No.03EX723C)

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A M -Varlou# clnnlu dedicated tohigh apeetral In this study, various solutions are investigated for a purity # I g d trmsmllaion using fiber optlcs me prwented. low phase noise optical link at 10 MHz, 800 MHz and Three a P P~~~O n types are bVw@ated : refe" 3.5 GHz. Indirect synchronization has been chosen for *qnenV di'hibution at lo IF dislalbutlon at the two lower frequencies, and both indirect and direct synchronization have been investigated at 3.5 GHz using Tbe reeeptlon clrcdt h o@caUy qmh"d oldllntor, w,,,cb pro,,dr II good alpal fonditloning f.r hm the two types of active devices : an 1nP based bipolar photowme m&wg the aish input dpal quaty transistor (photo-HBT) [3], and an InP based HEMT close to the d e r .device [4]. The application goal for the 10 MHz link is the reference frequency distribution in a telecommunications satellite. The signal from the ultra stable quartz clystal microwave aynthnlaed mJa at 3J

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Optical phase control of an optically injection-locked FET microwave oscillator

Cited by 40 publications

References 23 publications

Optical injection locking of a 38-GHz-band InP-based HEMT oscillator using a 1.55-μm DSB-SC modulated lightwave

Optical injection locking of a 38-GHz-band InP-based HEMT oscillator using a 1.55-μm DSB-SC modulated lightwave

Novel delay-time tunable pulsed laser source

Optically synchronized oscillators for low phase noise microwave and RF frequency distribution

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