10 to 110 GHz tunable opto-electronic frequencysynthesis using opticalfrequency comb generator and uni-travelling-carrier photodiode

Fukushima, Seiji; Silva, C.F.C.; Muramoto, Y.; Seeds, A.J.

doi:10.1049/el:20010544

Cited by 17 publications

(6 citation statements)

References 4 publications

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“…A remarkable, recent advance has been the introduction of optical dividers in the form of frequency combs to create record low close-to-carrier phase-noise microwave signal sources 20 . Frequency combs have previously been applied to stabilize optical carrier frequencies for distribution of microwaves over optical fibre [21][22][23] , however, in this new approach an optical signal serves as the root for the ultra-high-stability microwave signal itself. Although the technique is complex, emerging technologies like frequency microcombs 24,25 and compact reference cavities [26][27][28][29] could one day lead to chip-based photonic microwave sources that exceed the performance of the best electronic sources.…”

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confidence: 99%

Microwave synthesizer using an on-chip Brillouin oscillator

2013

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Low-phase-noise microwave oscillators are important to a wide range of subjects, including communications, radar and metrology. Photonic-based microwave-wave sources now provide record, close-to-carrier phase-noise performance, and compact sources using microcavities are available commercially. Photonics-based solutions address a challenging scaling problem in electronics, increasing attenuation with frequency. A second scaling challenge, however, is to maintain low phase noise in reduced form factor and even integrated systems. On this second front, there has been remarkable progress in the area of microcavity devices with large storage time (high optical quality factor). Here we report generation of highly coherent microwaves using a chip-based device that derives stability from high optical quality factor. The device has a record low electronic white-phase-noise floor for a microcavity-based oscillator and is used as the optical, voltage-controlled oscillator in the first demonstration of a photonic-based, microwave frequency synthesizer. The synthesizer performance is comparable to mid-range commercial devices.

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confidence: 99%

Microwave synthesizer using an on-chip Brillouin oscillator

2013

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“…For rapid and large changes in the phase of the injected signal, the slave lasers capability to follow the injected phase can be calculated by linearizing and to and , relating them by the phase-amplitude coupling factor, and separating real from imaginary part of (7a). The phase is then determined by (12) If the perturbation of the field amplitude is assumed to be negligible and using the -corrected injection phase-, where is the phase of the injected field, the injection-locking rate and the relative detuning-(12) can be rewritten (13) Integration now gives [36]…”

Section: Reference Modulated Linkmentioning

confidence: 99%

“…The injection phase can now be plotted as a function of time for any initial phase value by selecting a suitable integration constant . The steady state value can be derived from either (13) or (15), and is given by . If the rate of phase shift of the master laser, is small and , the injection phase is given from (15), where is chosen to give the initial injection phase.…”

Section: Reference Modulated Linkmentioning

confidence: 99%

“…For high spectral purity and absolute frequency stability, the phase fluctuations of the two lasers need to be correlated. The most commonly used technique is optical injection locking (OIL) where one or two lasers are injection locked to an optical comb, such as generated by frequency modulation (FM) sidebands of a master laser [11], [12], or other techniques [13]. A problem with optical injection locking methods is the limited locking range.…”

Section: Introductionmentioning

confidence: 99%

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Generation and transmission of millimeter-wave data-modulated optical signals using an optical injection phase-lock loop

Johansson

Seeds

2003

J. Lightwave Technol.

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103

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Generation and transmission of millimeter-wave data-modulated optical signals is presented using an optical injection phase-lock loop (OIPLL). Millimeter-wave signal generation is demonstrated with wide locking range, 30-GHz low phase noise level, 93 dBc/Hz, and a wide frequency tuning range, 4-60 GHz generation demonstrated using optical injection locking only, verified by using OIPLL in the 26-40 GHz range. The OIPLL is also used to transmit error-free 140-Mb/s amplitude shift keying and 68-Mb/s differential phase-shift keying (DPSK) modulated millimeter-wave signals over up to 65 km of uncompensated standard singlemode fiber. The DPSK system uses reference frequency modulation, eliminating the need for optical amplification.

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“…Recent development in photodetector design for enhanced power and bandwidth performance has inspired many new applications [1,2]. Among these applications, the photonic antenna with integrated photodetector and antenna has attracted much attention due to its potential to enhance the performance of wireless communication systems [2].…”

Section: Introductionmentioning

confidence: 99%