RF Engineering Meets Optoelectronics: Progress in Integrated Microwave Photonics

Iezekiel, Stavros; Burla, Maurizio; Klamkin, Jonathan; Marpaung, David; Capmany, J.

doi:10.1109/mmm.2015.2442932

Cited by 93 publications

(45 citation statements)

References 114 publications

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“…The successful integration of the wireless and fiber segments thus relies on the possibility of implementing agile and reconfigurable MWP subsystems, featuring broadband operation, as well as low space, weight and power consumption metrics. The solution consists in resorting to integrated microwave photonics (IMWP) [8,9] chips allocated either in the BTS and/or the central office in combination with radio over fiber transmission in the fiber segment connecting them [10,11]. The two fundamental issues to be solved in IMWP are related respectively to technology and architecture.…”

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confidence: 99%

A monolithic integrated photonic microwave filter

et al. 2016

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Meeting the ever increasing demand for transmission capacity in wireless networks will require evolving towards higher regions in the radiofrequency spectrum, reducing cell sizes as well as resorting to more compact, agile and power efficient equipment at the base stations, capable of smoothly interfacing the radio and fiber segments. Photonic chips with fully functional microwave photonic systems are promising candidates to achieve these targets. Over the last years, many integrated microwave photonic chips have been reported in different technologies. However, and to the best of our knowledge, none of them have fully integrated all the required active and passive components. Here, we report the first ever demonstration of a microwave photonics tunable filter completely integrated in an Indium Phosphide chip and packaged. The chip implements a reconfigurable RF-photonic filter, it includes all the required elements, such as lasers, modulators and photodetectors, and its response can be tuned by means of control electric currents. This demonstration is a fundamental step towards the feasibility of compact and fully programmable integrated microwave photonic processors.Emerging information technology scenarios, such as 5G mobile communications and Internet of Things (IoT), will require a flexible, scalable and future-proof solution capable for seamlessly interfacing the wireless and fiber segments of communication networks [1,2,3]. Microwave photonics (MWP) [4,5],the interdisciplin ary approach that combines radiofrequency and photonic systems, is the best positioned technology to achieve this target. A very relevant example is 5G wireless communications, which targets an extremely ambitious range of requirements including [6,7], a 1000-fold increase in capacity, connectivity for over 1 billion users, strict latency control, as well as network flexibility via agile software programming. These objectives call for a paradigm shift in the access network to incorporate smaller cells, exploit the millimeter wave regions of the radiofrequency spectrum and implement massive multiple-input multiple-output at the base stations (BTSs) [7]. The successful integration of the wireless and fiber segments thus relies on the possibility of implementing agile and reconfigurable MWP subsystems, featuring broadband operation, as well as low space, weight and power consumption metrics. The solution consists in resorting to integrated microwave photonics (IMWP) [8,9] chips allocated either in the BTS and/or the central office in combination with radio over fiber transmission in the fiber segment connecting them [10,11]. The two fundamental issues to be solved in IMWP are related respectively to technology and architecture. First, there is the need to identify the best material platform where to implement MWP chips. Second, whether it would be better to follow an application specific photonic integrated circuit (ASPIC) approach, where a specific architecture is employed to implement a specific functionality, or to resort to a ...

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A monolithic integrated photonic microwave filter

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“…Indeed, photonic integration has assumed a prominent role in microwave photonics research within the last few years [50], [51]. Integration of a structure as complex as that shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

Rapidly Tunable Dual-Comb RF Photonic Filter for Ultrabroadband RF Spread Spectrum Applications

Kim

Leaird

Weiner

2016

IEEE Trans. Microwave Theory Techn.

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Abstract-We demonstrate a rapidly frequency-tunable radio frequency (RF) filter using microwave photonics technology for ultrawideband RF spread spectrum applications. A pair of electro-optic frequency combs is arranged as a dispersive tapped delay line in a differential detection configuration to implement a programmable finite impulse response RF filter. Our photonic scheme enables both fast frequency tuning on the order of tens of nanoseconds and wide tuning range (>7.5 GHz) with minimal variation of RF gain and passband shape. The low control voltage (ca. 1 V) and the linear relationship between control voltage and passband frequency facilitate agile frequency tuning for processing of signals with time-varying frequency content, while differential detection increases the photocurrent by a factor of two and suppresses common mode intensity noise. We exploit the rapid tunability of the implemented filter to demonstrate dynamic tracking of frequency-hopped and chirped RF signals. An experiment that performs dynamic filtering of an input chirp signal (3.92-GHz center frequency, up-chirped by >2 GHz within 100 ns) obscured by strong broadband noise achieves ∼11-dB signal-to-noise ratio (SNR) improvement. The SNR obtained is in addition to that available from standard matched filtering or pulse compression processing, suggesting strong potential for enhanced resistance against broadband noise jamming.

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“…With the recent explosive growth of connected objects, for example in Home Area Networks, the wireless and optical communication technologies see more opportunity to merge with low cost Micro-Wave-Photonics (MWP) technologies [1]. Millimeter frequency band from 57GHz to 67GHz is used to accommodate the very high speed wireless data communication requirements [2].…”

Section: Introductionmentioning

confidence: 99%

Improving the opto-microwave performance of SiGe/Si phototransistor through edge-illuminated structure

et al. 2016

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This paper demonstrates the experimental study of edge and top illuminated SiGe phototransistors (HPT) implemented using the existing industrial SiGe2RF Telefunken GmbH BiCMOS technology for opto-microwave (OM) applications using 850nm Multi-Mode Fibers (MMF). Its technology and structure are described. Two different optical window size HPTs with top illumination (5x5µm 2 , 10x10µm 2) and an edge illuminated HPTs having 5µm x5µm size are presented and compared. A two-step post fabrication process was used to create an optical access on the edge of the HPT for lateral illumination with a lensed MMF through simple polishing and dicing techniques. We perform Opto-microwave Scanning Near-field Optical Microscopy (OM-SNOM) analysis on edge and top illuminated HPTs in order to observe the fastest and the highest sensitive regions of the HPTs. This analysis also allows understanding the parasitic effect from the substrate, and thus draws a conclusion on the design aspect of SiGe/Si HPT. A low frequency OM responsivity of 0.45A/W and a cutoff frequency, f-3dB , of 890MHz were measured for edge illuminated HPT. Compared to the top illuminated HPT of the same size, the edge illuminated HPT improves the f-3dB by a factor of more than two and also improves the low frequency responsivity by a factor of more than four. These results demonstrate that a simple etched HPT is still enough to achieve performance improvements compared to the top illuminated HPT without requiring a complex coupling structure. Indeed, it also proves the potential of edge coupled SiGe HPT in the ultra-low-cost silicon based optoelectronics circuits with a new approach of the optical packaging and system integration to 850nm MMF.

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RF Engineering Meets Optoelectronics: Progress in Integrated Microwave Photonics

Cited by 93 publications

References 114 publications

A monolithic integrated photonic microwave filter

A monolithic integrated photonic microwave filter

Rapidly Tunable Dual-Comb RF Photonic Filter for Ultrabroadband RF Spread Spectrum Applications

Improving the opto-microwave performance of SiGe/Si phototransistor through edge-illuminated structure

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