Characterization of a coherent optical RF channelizer based on a diffraction grating

Wang, Wenshen; Davis, Richard L.; Jung, Thomas; Lodenkamper, R.; Lembo, Lawrence J.; Brock, John C.; Wu, M.C.

doi:10.1109/22.954820

Cited by 161 publications

(25 citation statements)

References 13 publications

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“…Electronics-based techniques for frequency measurement can realize high measurement resolution, but the operation bandwidth is usually limited. Currently, numerous measurement approaches based on MWP techniques have been proposed, including frequency-to-power mapping, frequency-to-space mapping, and frequency-to-time mapping [11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Photonic-assisted multi-functional system for simultaneous distance, velocity and frequency measurement

Huang¹,

Wo²,

Yao

2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

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A photonic-assisted multi-functional system that can implement simultaneous distance, velocity and frequency measurement is proposed and experimentally demonstrated. The distance and the radial velocity of a moving target are measured by transmitting a complementarily (V-shaped) linear-frequency-modulated microwave waveform, and by mixing the reflected microwave waveform with the transmitted microwave waveform, two de-chirped waveforms with different carrier frequencies are generated. The distance and the radial velocity are measured by analyzing the de-chirped microwave waveforms. Frequency measurement can also be performed by the system which is done by modulating a received unknown signal on an optical carrier which is mixed with a frequency-sweeping light. By passing the mixed signal through an electrical bandpass filter, short electrical pulses are generated. By measuring the time delay difference between adjacent pulses, the frequency of the unknown signal is measured. The operation of the proposed system is evaluated experimentally. The results show that the distance and velocity can be measured with mean absolute errors of 2.95 cm and 6.09 cm/s, respectively, with a range resolution better than 5.5 cm. The frequency measurement function with the capability of implementing single-tone, multi-tone and broadband signals is verified for an input signal with a frequency ranging from 1 to 20 GHz. The mean absolute error of the frequency measurement is 34.22 MHz.

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Section: Introductionmentioning

confidence: 99%

Photonic-assisted multi-functional system for simultaneous distance, velocity and frequency measurement

Huang¹,

Wo²,

Yao

2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

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“…In recent years, the emerging microwave photonic channelized receiving technology has been proved to be superior to the traditional technology in frequency measurement bandwidth, real-time performance and anti-interference [2].And the advantages of photonic integration make it easier to realize integration and miniaturization of the system, which is crucial for airborne, space-borne and other SWaP restricted platforms. Channelized reception is divided into several types, including free space based optics [3], Time division multiplexing [4], optical filter banks [5] and optical frequency comb [6].…”

Section: Introductionmentioning

confidence: 99%

Microwave photonic channelization for ultra-wideband frequency hopping systems

Liu²

2023

AOPC 2022: Advanced Laser Technology and Applications

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For the urgent demand of the broadband, high efficient, parallel processing and high speed frequency hopping capability in the field of ultra-wideband measurement control and communication, this paper puts forward a kind of channelized receive technology based on microwave photonic technology. The coherent optical comb generation module generates the signal optical comb and the local oscillator optical comb, and coherent optical comb with high repetition frequency is obtained by using cascade modulator and nonlinear technique. In order to satisfy the 10 comb teeth designed for the system, the FSR of coherent optical frequency comb is greater than 100GHz and 99.4GHz respectively, and the channel bandwidth is 600MHz. The channel division module receives the frequency hopping signal from the RF front-end and modulates it to the optical frequency comb. By DPMZM single sideband modulation, 10 optical combs can be used to shift the frequency of the oscillator frequency comb. At the same time, according to the position of the frequency hopping signal, the frequency comb is carefully controlled. After the WDM multiplexing device, it is selected by the high-speed optical switch controlled by the control unit. And photoelectric detection and mirror frequency suppression are realized by coherent demodulation, which consists of an optical mixer, a balance detector and a bridge. Which realizes channelized reception and cross-frequency conversion of any 6GHz wideband signal from the DC to 40 GHz band. Achieve 3dB channel consistency and mirror frequency suppression above 30dB. The results are verified by simulation and experiment. This method can be used to receive ultra-wideband ultra-high speed frequency hopping signals.

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“…In recent years, microwave photonics channelized receivers are widely used in broadband signal reception, which can be primarily classified into three categories. The first category employs bandpass filters to partition the wideband radio-frequency (RF) signal into subchannels [2]. However, this approach necessitates the utilization of highly precise filters and is with large signal losses [3].…”

Section: Introductionmentioning

confidence: 99%

Broadband microwave signal reception based on optical down-conversion and coherent demodulation

Luo,

Lyu,

Sun

et al. 2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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Characterization of a coherent optical RF channelizer based on a diffraction grating

Cited by 161 publications

References 13 publications

Photonic-assisted multi-functional system for simultaneous distance, velocity and frequency measurement

Photonic-assisted multi-functional system for simultaneous distance, velocity and frequency measurement

Microwave photonic channelization for ultra-wideband frequency hopping systems

Broadband microwave signal reception based on optical down-conversion and coherent demodulation

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