Photonic Generation of Microwave Pulse Using a Phase-Modulator-Based Sagnac Interferometer and Wavelength-to-Time Mapping

Li, Wei; Wang, Wei Yu; Wang, Wen Ting; Liu, Jian Guo; Zhu, Ning Hua

doi:10.1109/jphot.2014.2374595

Cited by 41 publications

(4 citation statements)

References 18 publications

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“…Moreover, the bandwidth of the PM is 40 GHz, which implies that the phase of the generated microwave pulse could be changed with a high speed when a high speed control electrically signal is employed to the RF port of the PM. We have demonstrated this property [8]. Moreover, if a balanced PD is used to convert the optical signal into the electrical signal, the background-free high frequency microwave pulse could also be generated [15].…”

Section: Methodsmentioning

confidence: 72%

“…where α=V π TE / V π TM [8]. It is obviously indicated that the FSR of the optical comb filter could be changed.…”

Section: Principlementioning

confidence: 99%

“…wave signals [5][6][7][8]. The key component in the proposed method is the spectral shaper to slice the optical spectrum of a broadband optical source based on all-fiber approaches or free-space methods.…”

Section: Introductionmentioning

confidence: 99%

“…The limitations of the SLM-based configuration motivate the emergence of the pure fiber-based spectral shaper. To do so, numerous methods based on fiber optics have been proposed to generate high frequency microwave pulses based on differential group delay (DGD) elements [6][7] or Sagnac fiber loops as optical comb filters [5,8] in combination with WTT mapping in a dispersive element. However, the drawback associated with the all optical fiber structure is that the transmission response of that is fixed once fabricated.…”

Section: Introductionmentioning

confidence: 99%

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Photonic Generation of Pulsed Microwave Signal Based on Phase Shifted Lyot Optical Filter

Wang

Liu

Mei

et al. 2015

IEEE Photon. Technol. Lett.

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We propose and experimentally verify an approach to generate pulsed microwave signal with continuously tunable phase and discrete tuning in microwave frequency based on phase shifted Lyot optical filter in conjunction with wavelength-to-time (WTT) mapping technology. The Lyot optical filter with the discretely tunable spectral spacing is realized by changing the state of polarization (SOP) of the bidirectionally propagated optical signals. The frequency response of the filter is continuously tuned over a full free-spectral range (FSR) keeping its shape and FSR unchanged by simple adjusting the bias voltage of the phase modulator (PM). The proposed approach could also obtain pulsed microwave frequency multiplication with a discretely tunable multiplication factor (MF) by simply cascading multiple Lyot optical filters in the form of series. The proposed scheme is theoretically analyzed and experimentally demonstrated.Index Terms-Lyot optical filter, pulsed microwave signal, frequency multiplication.

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Section: Methodsmentioning

confidence: 72%

“…where α=V π TE / V π TM [8]. It is obviously indicated that the FSR of the optical comb filter could be changed.…”

Section: Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photonic Generation of Pulsed Microwave Signal Based on Phase Shifted Lyot Optical Filter

Wang

Liu

Mei

et al. 2015

IEEE Photon. Technol. Lett.

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Generation of Microwave Vortex Beams Using Metasurfaces

Yin¹,

Cui²

2021

Electromagnetic Vortices

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Semiconductor Emitters in Entropy Sources for Quantum Random Number Generation

Alkhazragi,

Lu,

Yan

et al. 2023

Annalen der Physik

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Random number generation (RNG) is needed for a myriad of applications ranging from secure communication encryption to numerical simulations to sports and games. However, generating truly random numbers can be elusive. Pseudorandom bit generation using computer algorithms provides a high random bit generation rate. Nevertheless, the reliance on predefined algorithms makes it deterministic and predictable once initial conditions are known. Relying on physical phenomena (such as measuring electrical noise or even rolling dice) can achieve a less predictable sequence of bits. Furthermore, if the physical phenomena originate from quantum effects, they can be truly random and completely unpredictable due to quantum indeterminacy. Traditionally, physical RNG is significantly slower than pseudorandom techniques. To meet the demand for high‐speed RNG with perfect unpredictability, semiconductor light sources are adopted as parts of the sources of randomness, i.e., entropy sources, in quantum RNG (QRNG) systems. The high speed of their noise, the high efficiency, and the small scale of these devices make them ideal for chip‐scale QRNG. Here, the applications and recent advances of QRNG are reviewed using semiconductor emitters. Finally, the performance of these emitters is compared and discuss their potential in future technologies.

show abstract

Photonic Generation of Microwave Pulse Using a Phase-Modulator-Based Sagnac Interferometer and Wavelength-to-Time Mapping

Cited by 41 publications

References 18 publications

Photonic Generation of Pulsed Microwave Signal Based on Phase Shifted Lyot Optical Filter

Photonic Generation of Pulsed Microwave Signal Based on Phase Shifted Lyot Optical Filter

Generation of Microwave Vortex Beams Using Metasurfaces

Semiconductor Emitters in Entropy Sources for Quantum Random Number Generation

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