Microwave Photonic Signal Processing

Capmany, J.; Mora, J.; Gasulla, Ivana; Sancho, Juan; Lloret, Juan Bautista Martí; Sales, Salvador

doi:10.1109/jlt.2012.2222348

Cited by 545 publications

(240 citation statements)

References 102 publications

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“…[30][31][32] The transfer function of a typical transversal filter can be described as where M is the number of taps, a n is the tap coefficient of the nth tap, and T is the time delay between adjacent taps. It should be noted that differentiators based on Eq.…”

Section: Operation Principlementioning

confidence: 99%

Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

et al. 2017

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We propose and experimentally demonstrate a microwave photonic intensity differentiator based on a Kerr optical comb generated by a compact integrated micro-ring resonator (MRR). The on-chip Kerr optical comb, containing a large number of comb lines, serves as a high-performance multi-wavelength source for implementing a transversal filter, which will greatly reduce the cost, size, and complexity of the system. Moreover, owing to the compactness of the integrated MRR, frequency spacings of up to 200-GHz can be achieved, enabling a potential operation bandwidth of over 100 GHz. By programming and shaping individual comb lines according to calculated tap weights, a reconfigurable intensity differentiator with variable differentiation orders can be realized. The operation principle is theoretically analyzed, and experimental demonstrations of the first-, second-, and third-order differentiation functions based on this principle are presented. The radio frequency amplitude and phase responses of multi-order intensity differentiations are characterized, and system demonstrations of real-time differentiations for a Gaussian input signal are also performed. The experimental results show good agreement with theory, confirming the effectiveness of our approach.

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Section: Operation Principlementioning

confidence: 99%

Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

et al. 2017

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“…The waveguides and transmission lines are important components of radio-frequency [1], photonic/optical [2][3][4] and magnonic [5][6][7] integrated systems for data communication and processing. The most obvious role of this element is transmission of signals between different parts of the system.…”

Section: Introductionmentioning

confidence: 99%

Spin waves in periodic antidot waveguide of complex base

Pan

Kłos

Mieszczak

et al. 2017

J. Phys. D: Appl. Phys.

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We consider the planar magnonic waveguide with a periodic sequence of antidots forming zig-zag pattern, where two neighboring antidots are shifted towards the opposite edges of the waveguide. This system has a complex base with two antidots in one unit cell. The Brillouin zone is here two-times narrower than the Brillouin zone for the waveguide without displacement of antidots. We have shown that for dispersion relation folded into narrower Brillouin zone, new frequency gap can be opened and their width can be controlled by the shift of the antidots. We found that, the different strength of spin wave pinning at the edges of the periodic waveguide (and their antidots) determines the dependence of the width of gap on the shift of antidots. For the systems with completely free or ideally pinned magnetization, these dependencies are qualitatively different. We have found an optimum shift of antidot for maximzing the width of the gap for the system with pinned magnetization. More interestingly, we notice that for this kind of geometry of the structure, majority of the modes are doubly degenerate at the edge of Brillouin zone and have a finite group velocity at the very close vicinity of the edge of Brillouin zone, for larger values of antidot shift. This empowers us to design magnonic waveguide to steer the spin waves.

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“…The factors previously described, together with the increasing demand for multiple communications applications with a great amount of associated information, justify the introduction of MPFs into the access optical networks [8]. Accordingly, the goal of this work is to evaluate an experimental scheme based on a hybrid fiber-radio communication system for video distribution based on a MPF consisting of four passband windows in the frequency range of 0.01-10 GHz.…”

Section: Introductionmentioning

confidence: 99%

Proposal and performance evaluation of a Fiber-To-The-Antenna system for video distribution operating in the S-band

Zaldívar-Huerta

García-Juárez

Pérez-Montaña

et al. 2015

Optics & Laser Technology

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a b s t r a c tIt is well known that fiber-radio schemes merge the high speed of the optical links with the widecoverage and mobility features of wireless systems. In this regard, we present the performance evaluation of a hybrid fiber-radio communication system for video distribution operating in the S-band. We demonstrate experimentally the generation of a series of microwave passband windows over 0.01-10 GHz range obtained by the interaction of an externally modulated multimode laser diode emitting at 1.55 mm associated to the chromatic dispersion parameter of an optical fiber as well as the length of the optical link. Also, demonstrated experimentally is the transmission of TV-signal coded on the microwave signals located at 2.27 GHz and 4.54 GHz, its propagation over an optical link of 25.24 km, and finally its distribution to multiple users by using an antenna. The originality of this work resides in the fact that the filtered microwave signals used as electrical carriers are function of the distance between the central site and the antenna; therefore it is possible to assign a particular microwave passband for certain services. Experimental results allow us to demonstrate that the Fiber-To-TheAntenna scheme is a promising technique for multiservice distribution.

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Microwave Photonic Signal Processing

Cited by 545 publications

References 102 publications

Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

Spin waves in periodic antidot waveguide of complex base

Proposal and performance evaluation of a Fiber-To-The-Antenna system for video distribution operating in the S-band

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