Broadband arbitrary waveform generation based on microwave frequency upshifting in optical fibers

Azaña, José; Berger, N.K.; Levit, Boris; Fischer, Baruch

doi:10.1109/jlt.2006.875212

Cited by 41 publications

(30 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, temporal optical imaging is an important, general signal-processing concept, which can be used to enhance the time-bandwidth performance of systems devoted to the generation or measurement of high-frequency electronic and RF signals [10]- [12], or ultrafast optical information [13]- [20]. Recently, temporal imaging of incoherent-light waveforms has been demonstrated using a time-domain equivalent of a spatial pinhole camera [9].…”

Section: Introductionmentioning

confidence: 99%

“…The demonstrated scheme involves a combination of dispersion and temporal gating with a short pulse waveform (temporal pinhole [15]), and it has been shown to be particularly interesting to process RF waveforms over long temporal field of views, well into the nanosecond range [9]. Contrary to previous designs for imaging temporal RF waveforms [11], [12], the incoherent-light scheme avoids the need for broadband pulsed laser sources [9]. However, as a critical practical limitation, the temporal pinhole camera exhibits a relatively poor resolution: well below the capabilities of previously reported time-lens systems [10]- [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Temporal Imaging of Incoherent-Light Intensity Waveforms Based on a Gated Time-Lens System

Azaña

2015

IEEE Photonics J.

View full text Add to dashboard Cite

We experimentally demonstrate temporal imaging of incoherent-light intensity waveforms using a combination of a temporal gating process and a time lens. This design allows one to set the system temporal field of view and resolution in an independent fashion, thus overcoming the intrinsic time-bandwidth product tradeoff of previous incoherent-light schemes based on the temporal pinhole camera concept. In a proof-ofconcept experiment, we report incoherent-light temporal compression of intensity waveforms by a factor of 2.86, with a time-bandwidth product exceeding 300, i.e., resolution of ∼26 ps (approximately fourfold improvement over the corresponding pinhole-only design) along a temporal field of view of ∼8 ns, using a basic linear-optics setup.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temporal Imaging of Incoherent-Light Intensity Waveforms Based on a Gated Time-Lens System

Azaña

2015

IEEE Photonics J.

View full text Add to dashboard Cite

show abstract

“…For example, in optical communications ultra-dense wavelength division multiplexing (UD-WDM) uses tightly spaced optical channels (<50 GHz spacing) generated from spectrally sliced optical combs to transmit data in both access and long-haul networks requiring large channel counts, and Zeller et al suggested that optical combs generated from mode-locked lasers are suitable sources for test and measurement of DWDM systems [1]. Optical combs are also finding application in the microwave regime where they have been used to implement photonic microwave filters [2], and the frequency up-shifting of arbitrary microwave waveforms [3], where tunability is a key parameter. More recently a novel optical transmission format, known as Coherent Wavelength Division Multiplexing (CoWDM) [4], has been proposed, which relies on a stable phase relationship between adjacent channels [5].…”

Section: Introductionmentioning

confidence: 99%

Multi-wavelength source using low drive-voltage amplitude modulators for optical communications

Healy¹,

Gunning²,

Ellis³

et al. 2007

Opt. Express

107

View full text Add to dashboard Cite

A simple and cost-effective technique for generating a flat, square-shaped multi-wavelength optical comb with 42.6 GHz line spacing and over 0.5 THz of total bandwidth is presented. A detailed theoretical analysis is presented, showing that using two concatenated modulators driven with voltages of 3.5 V π are necessary to generate 11 comb lines with a flatness below 2dB. This performance is experimentally demonstrated using two cascaded Versawave 40 Gbit/s low drive voltage electro-optic polarisation modulators, where an 11 channel optical comb with a flatness of 1.9 dB and a side-mode-suppression ratio (SMSR) of 12.6 dB was obtained.

show abstract

“…In recent years different techniques have been investigated and utilized to photonically generate ultra-wideband arbitrary waveforms [1][2][3][4][5][6][7]. The use of ultrafast optical pulse shaping followed by frequency-to-time mapping, via optical fiber dispersion, and optical-to-electrical conversion for the generation of arbitrary RF electrical waveforms has been demonstrated [1-2] which also enabled to synthesize matched waveforms to compensate ultrawideband (UWB) antenna link dispersion [8-9] and measure the frequencydependant delay of broadband antennas [10].…”

mentioning

confidence: 99%

Photonically implemented ultrawideband RF matched filtering

Weiner

Hamidi

2008

LEOS 2008 - 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society

View full text Add to dashboard Cite

We demonstrate matched filtering of ultrawideband radio frequency waveforms via programmable optical phase filters implemented in a hyperfine resolution pulse shaper. As an example we demonstrate compression of frequency modulated and pseudorandom sequence waveforms.The photonic generation of radio frequency (RF) waveforms has been of interest due to its appealing features such as programmability and ultrawide bandwidth. In recent years different techniques have been investigated and utilized to photonically generate ultra-wideband arbitrary waveforms [1][2][3][4][5][6][7]. The use of ultrafast optical pulse shaping followed by frequency-to-time mapping, via optical fiber dispersion, and optical-to-electrical conversion for the generation of arbitrary RF electrical waveforms has been demonstrated [1-2] which also enabled to synthesize matched waveforms to compensate ultrawideband (UWB) antenna link dispersion [8-9] and measure the frequencydependant delay of broadband antennas [10]. On the other hand photonic processing of radio frequency signals has been extensively investigated only as microwave spectral amplitude filters which enable bandpass filtering of microwave signals [11][12][13]. However, practical techniques with large fractional bandwidth to detect and process arbitrary signals for UWB applications such as code division multi-access are still lacking. In microwave engineering, due to the lack of arbitrary phase filters, matched filtering is commonly carried out through correlation, i.e., by mixing with an RF reference waveform, which requires synchronism and suffers from timing jitter, while digital signal processing solutions are limited by analog-to-digital converters' speed and dynamic range [14].Real time matched filtering can be used for asynchronous detection of UWB microwave waveforms which also enables to differentiate different waveforms for multi-access application while improving the signal-to-noise ratio. The available solution for UWB RF waveform matched filtering is surface acoustic wave (SAW) devices; however, for UWB operation SAW filters have been demonstrated only for center frequencies up to 3.63 GHz with 1.1 GHz bandwidth [15], which has a small fractional bandwidth and is well below the bandwidths accessible via photonic waveform generation techniques. Recently programmable photonic microwave filters with arbitrary UWB phase response were implemented via hyperfine resolution optical pulse shaping [16] which unveils a new approach for asynchronous detection of UWB electrical waveforms with large fractional bandwidth through matched filtering.

show abstract

Broadband arbitrary waveform generation based on microwave frequency upshifting in optical fibers

Cited by 41 publications

References 17 publications

Temporal Imaging of Incoherent-Light Intensity Waveforms Based on a Gated Time-Lens System

Temporal Imaging of Incoherent-Light Intensity Waveforms Based on a Gated Time-Lens System

Multi-wavelength source using low drive-voltage amplitude modulators for optical communications

Photonically implemented ultrawideband RF matched filtering

Contact Info

Product

Resources

About