Widely Tunable Microwave Photonic Notch Filter Based on Slow and Fast Light Effects

Xue, Weiqi; Sales, Salvador; Mørk, Jesper; Capmany, J.

doi:10.1109/lpt.2008.2009468

Cited by 68 publications

(4 citation statements)

References 21 publications

(14 reference statements)

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“…Even though an MPNF can provide large rejection, high resolution, bandwidth reconfigurability, and wideband tunability, achieving all these qualities using a single technique is difficult. Over the last two decades there have been a variety of MPNF demonstrations based on techniques like microresonators [151][152][153][154][155][156], optical delay lines [62,157,158], phase modulator incorporated Sagnac loop [159], fiber Bragg gratings (FBG) [160,161], slow and fast light effects [162] and SBS [21,[163][164][165][166][167][168][169][170][171][172].…”

Section: Mwp Notch Filtersmentioning

confidence: 99%

Microwave photonics applications of stimulated Brillouin scattering

Varun¹,

Mishra²,

Pant³

2022

J. Opt.

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Generation, processing, and sensing of microwave signals using photonic technologies offer immunity from electromagnetic interference, allow high-speed operation over a wide frequency range, and reduce the overall system weight. Recent developments in integrated photonic technologies further increase the attractiveness of photonics-based RF systems. Stimulated Brillouin scattering (SBS), due to its inherently narrow bandwidth, wavelength transparent nature, low threshold, and bandwidth reconfigurability, has emerged as a potential contender for microwave photonic generation and signal processing. In this article, we present a review of recent developments in the area of SBS-based microwave photonics. We discuss different SBS-based techniques for realizing some of the key microwave photonic signal processing functionalities such as radio frequency generation, filtering, and true time delay. Implementation of these tasks using fiber and on-chip platforms is presented along with the effect of system parameters such as dispersion on their performance. Novel architectures to mitigate these impairments are discussed.

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Section: Mwp Notch Filtersmentioning

confidence: 99%

Microwave photonics applications of stimulated Brillouin scattering

Varun¹,

Mishra²,

Pant³

2022

J. Opt.

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“…Even so, the tunability may lead to changes of the free spectral range (FSR) during the tuning process. Therefore, different kinds of microwave photonic filters with complex coefficients have been proposed in recent years to solve such problems by introducing a phase shift between the taps [11] using either a wideband 90 hybrid coupler [12], a dual-parallel Mach-Zehnder modulator [13], a phase-shift FBG [14], an all-optical differentiator [15], or an SOA with slow and fast light effects [16]. Note that most schemes are achieved utilizing two laser sources that may bring about certain disadvantages, including increased cost and complexity.…”

Section: Introductionmentioning

confidence: 99%

A Tunable Microwave Photonic Filter With a Complex Coefficient Based on Polarization Modulation

et al. 2013

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A tunable microwave photonic filter with a complex coefficient based on polarization modulation and a single laser source is proposed and demonstrated. Two outof-phase microwave signals with orthogonal polarization states are generated using a polarization modulator and then combined into one special polarization state to introduce certain phase shifts after filtering out one sideband. The tunability of the filter with the complex coefficient is achieved by adjusting the phase shifts between two taps. In addition, the frequency response of the proposed filter from 10 to 11 GHz with FSR of 400 MHz is measured.

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“…Slow and fast lights have indeed been used for phased array antennas [7], where the direction of a beam can be steered [8] without introducing beam distortion and without resorting to mechanical means that limit the speed of the system; tuneable microwave notch filter at 20 GHz for broad band access networks [9]; and optoelectronic processing functions for defense applications [10,11].…”

Section: Introduction: Group Velocity Control In Semiconductor Opticamentioning

confidence: 99%