True time-delay scheme for feeding optically controlled phased-array antennas using chirped-fiber gratings

Corral, J.L.; Martí, J.; Fuster, J.M.; Laming, R.I.

doi:10.1109/68.634731

Cited by 93 publications

(32 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 A common scheme exploits dispersion, with the time delay being varied by tuning the laser wavelength and propagating through high dispersion fibers 3,4 or chirped fiber gratings. [5][6][7] This scheme is, however, relatively bulky and complex. Recently, both slow light effects 8 and microring resonators 9 have been exploited to achieve microwave time delays.…”

mentioning

confidence: 99%

Tunable true-time delay of a microwave photonic signal realized by cross gain modulation in a semiconductor waveguide

Xue

Mørk

2011

Applied Physics Letters

View full text Add to dashboard Cite

We experimentally demonstrate the realization of a tunable true-time delay for microwave signals by exploiting cross gain modulation among counter-propagating optical beams in a semiconductor optical amplifier. Broadband operation from ∼5 to ∼35 GHz is observed. The physical effect originates from the combination of carrier dynamics and propagation effects, and the experimental results are well accounted for by a numerical model. We find that, in contrast to the case of the co-propagating beams, the bandwidth is not limited by the lifetime of excited carriers. The trade-off between the magnitude of the true-time delay and the microwave bandwidth is discussed.

show abstract

mentioning

confidence: 99%

Tunable true-time delay of a microwave photonic signal realized by cross gain modulation in a semiconductor waveguide

Xue

Mørk

2011

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

“…The advantages of TTD are small size, low loss and lightweight. For this application a number of TTD scheme have been proposed using wide bandwidth chirped-fiber Bragg gratings (CFBGs) [1][2] and tunable dispersion medium (TDM) [3]. On the other hand, RF signal is transmitted into an optical fiber as an optical signal, it is more practical that TTD for phased array antenna should be optically controlled without electrical signal processing.…”

Section: Introductionmentioning

confidence: 99%

True-time delay beamforming using semiconductor optical amplifier and tunable dispersion medium

Yamato

Matsuura

2014

2014 4th IEEE International Conference on Network Infrastructure and Digital Content

View full text Add to dashboard Cite

We demonstrated optical phased array antenna based on true-time delay (TTD) beamforming for radio-over-fiber (RoF) using semiconductor optical amplifier (SOA) and tunable dispersion medium. In the case of the full range of beam direction, the required delay time per antenna element was 194 ps. As a result, the full true time delay was obtained by adjusting the dispersion value of the tunable dispersion medium (TDM) from 400 ps/nm to +400 ps/nm. We successfully achieved the high TTD performance for various output beam angles.

show abstract

“…A versatile, compact and flexible PMPS will increase dramatically the applications of the MWP techniques. Several technologies have been proposed for the PMPS since the early beginning of the MWP till the recent days: fiber optics [4], optical filter with complex phase-response [5], liquid crystals [6], chirped FBGs [7], electrooptic polymers [8] amongst others.…”

Section: Introductionmentioning

confidence: 99%

Microwave photonics processing controlling the speed of light in semiconductor waveguides

Xue

Chen

Sales

et al. 2009

2009 11th International Conference on Transparent Optical Networks

View full text Add to dashboard Cite

We review the theory of slow and fast light effect in semiconductor waveguides and potential applications of these effects in microwave photonic systems as RF phase shifters. Recent applications as microwave photonic filters is presented. Also, in the presentation more applications like optoelectronic oscillators and arbitrary waveform generators will be described. Some work related to the noise and distortion will also be discussed.

show abstract

True time-delay scheme for feeding optically controlled phased-array antennas using chirped-fiber gratings

Cited by 93 publications

References 8 publications

Tunable true-time delay of a microwave photonic signal realized by cross gain modulation in a semiconductor waveguide

Tunable true-time delay of a microwave photonic signal realized by cross gain modulation in a semiconductor waveguide

True-time delay beamforming using semiconductor optical amplifier and tunable dispersion medium

Microwave photonics processing controlling the speed of light in semiconductor waveguides

Contact Info

Product

Resources

About