Photonic signal processing of microwave signals

Minasian, R.A.; Chan, Erwin H. W.; Yi, Xiaoke

doi:10.1109/acoft.2010.5929926

Cited by 66 publications

(85 citation statements)

References 10 publications

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“…The corresponding fractional orders are 0.17, 0.33, 0.5, 0.67, 0.83, and 1, respectively. To implement the fractional Hilbert transformer, we use a transversal filter approach that offers high performance and reconfigurability in terms of filtering shapes [51][52][53][54][55][56][57][58][59]. In a transversal filter, discrete frequency samples of the optical signal containing the RF modulation are time delayed, weighted, summed together, and finally detected by a photodetector to generate the RF output.…”

Section: Principle Of Operationmentioning

confidence: 99%

Microwave and RF Photonic Fractional Hilbert Transformer Based on a 50 GHz Kerr Micro-Comb

Tan

Mitchell

Moss

et al. 2019

J. Lightwave Technol.

137

136

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We report a photonic microwave and RF fractional Hilbert transformer based on an integrated Kerr micro-comb source. The micro-comb source has a free spectral range (FSR) of 50GHz, generating a large number of comb lines that serve as a high-performance multiwavelength source for the transformer. By programming and shaping the comb lines according to calculated tap weights, we achieve both arbitrary fractional orders and a broad operation bandwidth. We experimentally characterize the RF amplitude and phase response for different fractional orders and perform system demonstrations of real-time fractional Hilbert transforms. We achieve a phase ripple of < 0.15 rad within the 3-dB pass-band, with bandwidths ranging from 5 to 9 octaves, depending on the order. The experimental results show good agreement with theory, confirming the effectiveness of our approach as a new way to implement high-performance fractional Hilbert transformers with broad processing bandwidth, high reconfigurability, and greatly reduced size and complexity.

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Section: Principle Of Operationmentioning

confidence: 99%

Microwave and RF Photonic Fractional Hilbert Transformer Based on a 50 GHz Kerr Micro-Comb

Tan

Mitchell

Moss

et al. 2019

J. Lightwave Technol.

137

136

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show abstract

“…A commonly used microstrip patch antenna controls the size by using a substrate with a different permittivity. However, this design involves some disadvantages, such as narrow bandwidth and low efficiency [1]. Magnetodielectric material, an alternative to high-permittivity dielectric materials, can provide variable permeability.…”

Section: Resultsmentioning

confidence: 99%

“…Photonic signal processors have attracted significant interest because of their potential advantages in processing high bandwidth signals, immunity to electromagnetic interference, and tunability [1]. Many techniques for realizing microwave photonic filters have been reported.…”

Section: Introductionmentioning

confidence: 99%

Continuously tunable, equivalent multiple‐tap negative‐tap microwave photonic notch filter

Chan

2010

Micro & Optical Tech Letters

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“…An attractive application of microwave photonics is photonic filtering because of their features like low loss, immunity to electromagnetic interference, wide tunability and reconfigurability. [1][2][3] These features are difficult to realize in traditional RF filtering techniques. Microwave photonic filtering can be classified in two regimes known as the coherent and noncoherent regime.…”

Section: Introductionmentioning

confidence: 99%

“…The noncoherent regime offers stable behavior against environmental conditions and eliminates the issue of optical interference at the output. [1][2][3] However, noncoherent regime requires separate laser source for each tap. Therefore, the cost of the system will increase in line with increase in the number of optical taps.…”

Section: Introductionmentioning

confidence: 99%

Microwave photonic filtering based on optical carrier suppression modulation

Umar

Mirza

Ghafoor

2019

Micro & Optical Tech Letters

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Microwave photonic filters have the advantages of wide tunability, low loss, and ease of reconfiguration. In this article, we propose a simple and cost‐efficient technique for the implementation of microwave photonic filter through simulations. This technique for the implementation of microwave photonic filter is employing a multiwavelength source and dispersive fiber. The multiwavelengths have been generated by employing optical carrier suppression based modulation. It has been shown that the free spectral range (FSR) of the filter may be tuned from 4.26 to 3.55 GHz by simply varying the frequency of the RF sinusoidal signal being used for modulation from 25 to 30 GHz, respectively. Furthermore, the bandwidth of the filter may be tuned by varying the number of filter taps.

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Photonic signal processing of microwave signals

Cited by 66 publications

References 10 publications

Microwave and RF Photonic Fractional Hilbert Transformer Based on a 50 GHz Kerr Micro-Comb

Microwave and RF Photonic Fractional Hilbert Transformer Based on a 50 GHz Kerr Micro-Comb

Continuously tunable, equivalent multiple‐tap negative‐tap microwave photonic notch filter

Microwave photonic filtering based on optical carrier suppression modulation

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