Chirped-pulse-based broadband RF channelization implemented by a mode-locked laser and dispersion

Hao, Wenhui; Dai, Yitang; Yin, Feifei; Zhou, Yue; Li, Jianqiang; Dai, Jian; Li, Wangzhe; Xu, Kun

doi:10.1364/ol.42.005234

Cited by 41 publications

(17 citation statements)

References 18 publications

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“…Generally, the operative bandwidth of an electric channelized receiver is limited to a few GHz, because the "Electronic Bottleneck" resists in it [12,13]. In a photonics-assisted channelized receiver, the operative bandwidth can reach several GHz (tens of GHz) [14][15][16][17][18]. Moreover, photonics-assisted channelized receivers have other advantages such as high compactness, low loss, and immunity to electromagnetic interference [19,20].…”

Section: Introductionmentioning

confidence: 99%

Photonics-Assisted Multi-Band Microwave Receiver Based on Spectrum Analysis and Coherent Channelization

et al. 2020

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Due to the limitation of analog-to-digital/digital-to-analog converters, photonics-assisted channelized receivers are thought to be a promising approach to receiving wideband microwave signals. Herein, based on the spectrum analysis and the coherent channelization, we develop a photonics-assisted channelized receiver for multi-band microwave signals. In the proposed channelized receiver, the instantaneous spectral analysis is introduced to determine the frequencies and bandwidth of a dynamic wideband signal. The dynamic wideband signal is then received by a multi-band coherent channelizer. By exploiting transparency of the optoelectronic devices, we equivalently build a multi-band coherent channelizer that can work for dynamic microwave signals, where a few optoelectronic devices are required. Compared with the existing coherent channelizers, the operative bandwidth of the proposed multi-band coherent channelizer is much larger (up to 28 GHz). The proposed photonics-assisted channelized receiver doesn't need tunable optical comb generators and radio frequency sources, and it also doesn't require knowing the spectrum information in advance. Moreover, the designed example of the proposed photonics-assisted channelized receiver for a 4 GHz original signal in 2-30 GHz microwave bands is given and discussed. The spectrum information of the dynamic original signals is obtained by monitoring the optical power in each sub-channel. We verify the feasibility of the multi-band coherent channelizer by channelizing two 4 GHz linearly-chirped signals with center frequencies of 4 and 28 GHz into four 1 GHz sub-channels, respectively.

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Section: Introductionmentioning

confidence: 99%

Photonics-Assisted Multi-Band Microwave Receiver Based on Spectrum Analysis and Coherent Channelization

et al. 2020

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“…The other category of photonic RF channelizers operates in a much more compact and efficient way by employing the Vernier effect between a multiwavelength source and periodic optical filter to achieve a precisely stepped and broadband RF spectral channelization. Diverse types of devices and platforms have been used for this, such as stimulated Brillouin scattering [16][17][18], parametric processes in nonlinear fiber [19,20], spectrally sliced incoherent sources [21], discrete laser arrays [22], electro-optic modulator-based frequency combs [11,23,24], and others [25,26]. Yet those approaches face limitations in channel number, spectral resolution, and ease of being monolithically integrated, due to bulky discrete components.…”

Section: Introductionmentioning

confidence: 99%

Photonic RF channelizer based on 49GHz soliton crystal microcombs

Moss¹,

Morandotti²,

Mitchell³

et al. 2020

Preprint

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We report a broadband radio frequency (RF) channelizer with up to 92 channels using a coherent microcomb source. A soliton crystal microcomb, generated by a 49 GHz micro-ring resonator (MRR), is used as a multi-wavelength source. Due to its ultra-low comb spacing, up to 92 wavelengths are available in the C band, yielding a broad operation bandwidth. Another high-Q MRR is employed as a passive optical periodic filter to slice the RF spectrum with a high resolution of 121.4 MHz. We experimentally achieve an instantaneous RF operation bandwidth of 8.08 GHz and verify RF channelization up to 17.55 GHz via thermal tuning. Our approach is a significant step towards the monolithically integrated photonic RF receivers with reduced complexity, size, and unprecedented performance, which is important for wide RF applications ranging from broadband analog signal processing to digital-compatible signal detection.

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“…In Ref. [13], a scheme based on a mode-locked laser and a dispersive fiber is proposed, but the generation scheme of dual optical combs is much complicated. Ref.…”

Section: Introductionmentioning

confidence: 99%

An Ultra-Wideband Microwave Photonic Channelizer Based on Coherent Optical Frequency Combs and Image-Reject Down-Conversion

et al. 2020

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Radio frequency (RF) channelization receiver is one of the most effective methods for processing ultra-wideband RF signals. In this paper, an ultra-wideband microwave photonic channelizer based on coherent optical frequency combs (OFCs) and image-reject down-converter is proposed and demonstrated. The OFCs used in the system are generated by two dual parallel Mach-Zehnder modulators (DPMZM), and the free spectrum range (FSR) is flexibly adjustable. The image-reject down-converter can not only effectively achieve image separation but also suppress the seven-order distortion and DC offset using balanced detection. A K-and Ka-band RF signal covering the frequency band from 25 to 30 GHz is sliced into 5 sub-channels with 1-GHz bandwidth, two-tone signals with frequencies of 27.5 and 27.51GHz are used to measure the spurious free dynamic range (SFDR) which is 116.8 dB•Hz 2∕3 , the image-rejection is over 66.4 dB, and the error vector magnitude (EVM) is 4.2%. INDEX TERMS Microwave photonics, channelization, optical frequency comb (OFC), image rejection. balanced detection.

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Chirped-pulse-based broadband RF channelization implemented by a mode-locked laser and dispersion

Cited by 41 publications

References 18 publications

Photonics-Assisted Multi-Band Microwave Receiver Based on Spectrum Analysis and Coherent Channelization

Photonics-Assisted Multi-Band Microwave Receiver Based on Spectrum Analysis and Coherent Channelization

Photonic RF channelizer based on 49GHz soliton crystal microcombs

An Ultra-Wideband Microwave Photonic Channelizer Based on Coherent Optical Frequency Combs and Image-Reject Down-Conversion

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