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Photonics
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Integrated Microwave Photonics
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Integrated Microwave Photonics

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 13789

Special Issue Editors

Prof. Dr. Wenting Wang

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Guest Editor
Xiongan Institute of Innovation, Chinese Academy of Sciences, Xiong’an, China
Interests: integrated photonics; microwave photonics; precision measurement
Prof. Dr. Weifeng Zhang

E-Mail Website
Guest Editor
School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
Interests: integrated microwave photonics for signal generation and processing
Prof. Dr. Sha Zhu

E-Mail Website
Guest Editor
College of Microelectronics, Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
Interests: microwave photonic signal generation; procession and transmission; lithium niobate on insulator devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the past decade, integrated microwave photonics have attracted significant attention due to advances in photonic integration. The ability to combine different integrated material platforms such as silicon, silicon nitride, indium phosphide, and lithium niobate has resulted in chip-scale low-noise microwave generation, millimeter-wave and sub-millimeter wave generation, optical frequency synthesizers, low-loss and high-bandwidth electro-optic modulators, chip-scale signal processing, and so on. This Special Issue will highlight novel optical sources such as narrow linewidth lasers, broadband frequency combs, electro-optic modulators, photodetectors, amplifiers and integrated microwave photonics systems, including signal generation, processing, distribution, and detection. Moreover, this issue will include studies on applications of microwave photonics such as in 5/6G, satellite communication, information processing, imaging, distance metrology, precision frequency metrology, and so on. The purpose of this issue to report and summarize the recent progress on this topic.

Prof. Dr. Wenting Wang
Prof. Dr. Weifeng Zhang
Prof. Dr. Sha Zhu
Guest Editors

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Keywords

  • integrated photonics
  • precision measurement

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Published Papers (4 papers)

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Research

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14 pages, 6449 KiB  
Communication
A Model of Dual Fabry–Perot Etalon-Based External-Cavity Tunable Laser Using Finite-Difference Traveling-Wave Method
by Xinhao Du, Changda Xu, Ya Jin, Kunpeng Zhai, Wenting Wang, Wei Chen and Ninghua Zhu
Photonics 2023, 10(5), 579; https://doi.org/10.3390/photonics10050579 - 16 May 2023
Viewed by 2188
Abstract
A physical model of an external-cavity tunable laser (ECTL) utilizing the vernier effect of a dual Fabry–Perot (FP) etalon is presented and simulated using the finite-difference traveling wave (FDTW) method. In this paper, we provide a detailed explanation of the physical principle and [...] Read more.
A physical model of an external-cavity tunable laser (ECTL) utilizing the vernier effect of a dual Fabry–Perot (FP) etalon is presented and simulated using the finite-difference traveling wave (FDTW) method. In this paper, we provide a detailed explanation of the physical principle and construction process of the model, as well as the simulation results for the laser. The model is precisely established by studying the time-dependent changes in the carrier concentration and optical field of different wavelengths inside the laser before reaching a steady state. By determining multiple parameters in the tuning region and gain region, the proposed model can calculate and predict various laser parameters, such as output power and side-mode suppression ratio (SMSR). Moreover, the FDTW method displays the change process of various parameters, such as carrier concentration and spectrum, in the convergence of various positions in the laser with femtosecond time resolution. This capability is promising for in-depth research on the inner mechanism of lasers. Full article
(This article belongs to the Special Issue Integrated Microwave Photonics)
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8 pages, 1379 KiB  
Communication
An All-Optical Microwave Frequency Divider with Tunable Division Factors Based on DP-DPMZM
by Kunpeng Zhai, Xuhua Cao, Sha Zhu, Huashun Wen, Yinfang Chen, Ya Jin, Xinyan Zhang, Wei Chen, Jiabin Cui and Ninghua Zhu
Photonics 2023, 10(2), 138; https://doi.org/10.3390/photonics10020138 - 30 Jan 2023
Viewed by 1797
Abstract
Based on a dual-polarization dual-parallel Mach–Zehnder modulator (DP-DPMZM), an all-optical frequency divider is proposed and experimentally demonstrated. Two radio frequency (RF) signals are modulated on an optical carrier to work as a dual-beam master laser (ML). The optical signals of the ML are [...] Read more.
Based on a dual-polarization dual-parallel Mach–Zehnder modulator (DP-DPMZM), an all-optical frequency divider is proposed and experimentally demonstrated. Two radio frequency (RF) signals are modulated on an optical carrier to work as a dual-beam master laser (ML). The optical signals of the ML are injected into a distributed feedback (DFB) laser to initiate the period-two (P2) state oscillation. By beating the output of the slave laser (SL) via circulator in a photodetector, a frequency divider with tunable factors can be achieved. The innovation of the scheme lies in having a simple structure and only requires optical devices, which is operated in wide RF frequency range without any electrical amplifiers before the photodetector to increase the conversion gain. Experiment results also demonstrate that the frequency division factors can be adjusted. Full article
(This article belongs to the Special Issue Integrated Microwave Photonics)
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9 pages, 2100 KiB  
Communication
Photonic Generation of Background-Free Phase-Coded Microwave Pulses with Elimination of Power Fading
by Mengyuan Guan, Lu Wang, Fangping Li, Xiaoyu Chen, Ming Li, Ninghua Zhu and Wei Li
Photonics 2023, 10(1), 66; https://doi.org/10.3390/photonics10010066 - 7 Jan 2023
Cited by 4 | Viewed by 1756
Abstract
We report a novel photonic scheme to generate background-free phase-coded microwave pulses with elimination of power fading by cascading a dual-polarization dual-parallel Mach–Zehnder modulator (DP-DPMZM) and a polarization modulator (PolM). The DP-DPMZM is driven by a radio frequency (RF) signal to generate two [...] Read more.
We report a novel photonic scheme to generate background-free phase-coded microwave pulses with elimination of power fading by cascading a dual-polarization dual-parallel Mach–Zehnder modulator (DP-DPMZM) and a polarization modulator (PolM). The DP-DPMZM is driven by a radio frequency (RF) signal to generate two first-order optical sidebands with an orthogonal polarization state, while the PolM is driven by a three-level electrical coding signal. By properly adjusting the polarization state, a series of background-free frequency-doubled phase-coded microwave pulses can be generated after optical-to-electrical conversion. Benefiting from the carrier-suppressed single-sideband (CS-SSB) modulation, the proposed signal generator can suppress the chromatic-dispersion-induced power-fading effect, which has excellent potential for long-distance fiber transmission. In addition, the system can directly generate phase-coded microwave signals in pulse mode by truncating continuous wave (CW) microwave signals. Moreover, the microwave signal generator has wideband tunability since no optical filter is involved in our scheme. The proposed method was theoretically analyzed and experimentally verified. Phase-coded microwave pulses centered at 14 GHz and 19.2 GHz with a bit rate of 0.5 Gb/s were successfully generated. Full article
(This article belongs to the Special Issue Integrated Microwave Photonics)
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Review

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17 pages, 4797 KiB  
Review
The Progress and Trend of Heterogeneous Integration Silicon/III-V Semiconductor Optical Amplifiers
by Wenqi Shi, Canwen Zou, Yulian Cao and Jianguo Liu
Photonics 2023, 10(2), 161; https://doi.org/10.3390/photonics10020161 - 3 Feb 2023
Cited by 9 | Viewed by 6920
Abstract
Silicon photonics is a revolutionary technology in the integrated photonics field which has experienced rapid development over the past several decades. High-quality III-V semiconductor components on Si platforms have shown their great potential to realize on-chip light-emitting sources for Si photonics with low-cost [...] Read more.
Silicon photonics is a revolutionary technology in the integrated photonics field which has experienced rapid development over the past several decades. High-quality III-V semiconductor components on Si platforms have shown their great potential to realize on-chip light-emitting sources for Si photonics with low-cost and high-density integration. In this review, we will focus on semiconductor optical amplifiers (SOAs), which have received considerable interest in diverse photonic applications. SOAs have demonstrated high performance in various on-chip optical applications through different integration technologies on Si substrates. Moreover, SOAs are also considered as promising candidates for future light sources in the wavelength tunable laser, which is one of the key suitable components in coherent optical devices. Understanding the development and trends of heterogeneous integration Silicon/III-V SOA will help researchers to come up with effective strategies to combat the emerging challenges in this family of devices, progressing towards next-generation applications. Full article
(This article belongs to the Special Issue Integrated Microwave Photonics)
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