Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997758
M. Fok, Qidi Liu, Mei Yang
Biomimicry offers effective solutions to critical challenges in our society by learning and mimicking the strategies used by living organisms. In this paper, biomimicry in microwave photonics and soft robotics will be introduced. Bio-inspired approaches has been used to provide promising solutions to the field of microwave photonic such as localization, jamming avoidance, and steganography. The analog solution provided by bio-inspired approaches does not propose a bandwidth limitation because there is no need for digitization. In recent years, soft robotics has been a promising alternative to conventional robots by offering safer robot-to-human interaction. Unique embedding configurations allow fiber optic sensor to be used in soft robotic to provide feedback for precise control. The second part of this paper will introduce several bio-inspired soft robots with embedded fiber optic sensors. Fiber optics provide flexible and light weight sensing solution, making it a promising candidate for sensing in soft robotics.
{"title":"Biomimicry in Microwave Photonics and Soft Robotic with Fiber Optics Sensors","authors":"M. Fok, Qidi Liu, Mei Yang","doi":"10.1109/MWP54208.2022.9997758","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997758","url":null,"abstract":"Biomimicry offers effective solutions to critical challenges in our society by learning and mimicking the strategies used by living organisms. In this paper, biomimicry in microwave photonics and soft robotics will be introduced. Bio-inspired approaches has been used to provide promising solutions to the field of microwave photonic such as localization, jamming avoidance, and steganography. The analog solution provided by bio-inspired approaches does not propose a bandwidth limitation because there is no need for digitization. In recent years, soft robotics has been a promising alternative to conventional robots by offering safer robot-to-human interaction. Unique embedding configurations allow fiber optic sensor to be used in soft robotic to provide feedback for precise control. The second part of this paper will introduce several bio-inspired soft robots with embedded fiber optic sensors. Fiber optics provide flexible and light weight sensing solution, making it a promising candidate for sensing in soft robotics.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117063194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997742
E. Nazemosadat, S. García, I. Gasulla
We experimentally demonstrate a microwave frequency measurement scheme using a heterogeneous multicore fiber (MCF). Taking advantage of the inherently different differential group delays (DGDs) among four cores of the heterogeneous MCF, two individual 2-tap microwave filters with different free spectral ranges (FSRs) are constructed and the power ratio between their frequency responses is used as the amplitude comparison function (ACF). Since the DGD among the cores and the FSR of the filters are wavelength-dependent, by tuning the operational wavelength over a set of different values, we can obtain a set of different ACF traces. The collective information provided by these ACFs is then used to estimate the unknown frequency. Compared to many previous microwave frequency measurement approaches using dispersive elements, this scheme offers higher flexibility, tunability and compactness, along with higher measurement resolution (±71 MHz) over a broader radiofrequency range (0.5–40 GHz).
{"title":"Broadband Microwave Frequency Measurement Using a Heterogeneous Multicore Fiber","authors":"E. Nazemosadat, S. García, I. Gasulla","doi":"10.1109/MWP54208.2022.9997742","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997742","url":null,"abstract":"We experimentally demonstrate a microwave frequency measurement scheme using a heterogeneous multicore fiber (MCF). Taking advantage of the inherently different differential group delays (DGDs) among four cores of the heterogeneous MCF, two individual 2-tap microwave filters with different free spectral ranges (FSRs) are constructed and the power ratio between their frequency responses is used as the amplitude comparison function (ACF). Since the DGD among the cores and the FSR of the filters are wavelength-dependent, by tuning the operational wavelength over a set of different values, we can obtain a set of different ACF traces. The collective information provided by these ACFs is then used to estimate the unknown frequency. Compared to many previous microwave frequency measurement approaches using dispersive elements, this scheme offers higher flexibility, tunability and compactness, along with higher measurement resolution (±71 MHz) over a broader radiofrequency range (0.5–40 GHz).","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126375826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997737
Yaheng Wang, L. Yi, M. Tonouchi, T. Nagatsuma
Long focal depth property of lens/mirrors is of practical importance in terahertz (THz) imaging systems where the sample position is usually uncertain. A 600-GHz-band THz imaging scanner system using an integrated off-axis parabolic (OAP) mirror is presented for this requirement. Both simulation and experiment results show that a spatial resolution of ~2 mm can be achieved at a focal distance of 100 mm. Moreover, owing to the astigmatism of the proposed OAP mirror, a long focal depth of ~170 mm was validated with the imaging experiment. Finally, a real imaging experiment was provided for recognizing the hidden metal object, which can be potentially used for imaging targets at different distances.
{"title":"600-GHz-band Terahertz Imaging Scanner System with Enhanced Focal Depth","authors":"Yaheng Wang, L. Yi, M. Tonouchi, T. Nagatsuma","doi":"10.1109/MWP54208.2022.9997737","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997737","url":null,"abstract":"Long focal depth property of lens/mirrors is of practical importance in terahertz (THz) imaging systems where the sample position is usually uncertain. A 600-GHz-band THz imaging scanner system using an integrated off-axis parabolic (OAP) mirror is presented for this requirement. Both simulation and experiment results show that a spatial resolution of ~2 mm can be achieved at a focal distance of 100 mm. Moreover, owing to the astigmatism of the proposed OAP mirror, a long focal depth of ~170 mm was validated with the imaging experiment. Finally, a real imaging experiment was provided for recognizing the hidden metal object, which can be potentially used for imaging targets at different distances.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129097594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997642
Chaojiong Wei, Xiaojun Xie, Yongtao Du, Ziyun Wang, J. Ye, Z. Zeng, X. Zou, Lian-shan Yan
We experimentally demonstrate >110 GHz charge-compensated modified uni-traveling carrier (CC-MUTC) photodiodes by flip-chip bonding on diamond submount. The typical dark current is ~200 nA at −3 V bias voltage and the measured responsivity reaches 0.15 A/W. Photodiodes with 6-μm, 8-μm, and 10-μm diameter exhibit 3-dB bandwidths of >110 GHz, 90 GHz, and 80 GHz, respectively. The RF output power reaches 8.4 dBm at 90 GHz at room temperature.
{"title":">110 GHz High-Power Photodiode by Flip-Chip Bonding","authors":"Chaojiong Wei, Xiaojun Xie, Yongtao Du, Ziyun Wang, J. Ye, Z. Zeng, X. Zou, Lian-shan Yan","doi":"10.1109/MWP54208.2022.9997642","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997642","url":null,"abstract":"We experimentally demonstrate >110 GHz charge-compensated modified uni-traveling carrier (CC-MUTC) photodiodes by flip-chip bonding on diamond submount. The typical dark current is ~200 nA at −3 V bias voltage and the measured responsivity reaches 0.15 A/W. Photodiodes with 6-μm, 8-μm, and 10-μm diameter exhibit 3-dB bandwidths of >110 GHz, 90 GHz, and 80 GHz, respectively. The RF output power reaches 8.4 dBm at 90 GHz at room temperature.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133992644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997784
J. Panasiewicz, Nisrine Arab, F. Destic, G. M. Pacheco, A. Rissons
This study proposes a new architecture for the phase detector in an all-digital Optical-Phase-Locked Loop (OPLL) to demodulate a digitally modulated optical signal from a long-distance Free Space Optics (FSO) communications system. The performance of the proposed architecture is evaluated and compared with an OPLL using an analog phase detector. In addition, a non-negligible delay is considered in the system analyses. Finally, the impact of wind speed on communication quality through the obtained Bit Error Rate (BER) from the recovered data is studied under three different atmospheric turbulence scenarios.
{"title":"All-Digital Optical Phase-Locked Loop for satellite communications under Turbulence Effects","authors":"J. Panasiewicz, Nisrine Arab, F. Destic, G. M. Pacheco, A. Rissons","doi":"10.1109/MWP54208.2022.9997784","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997784","url":null,"abstract":"This study proposes a new architecture for the phase detector in an all-digital Optical-Phase-Locked Loop (OPLL) to demodulate a digitally modulated optical signal from a long-distance Free Space Optics (FSO) communications system. The performance of the proposed architecture is evaluated and compared with an OPLL using an analog phase detector. In addition, a non-negligible delay is considered in the system analyses. Finally, the impact of wind speed on communication quality through the obtained Bit Error Rate (BER) from the recovered data is studied under three different atmospheric turbulence scenarios.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127854593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997669
P. Morton, J. Khurgin, M. Morton
A practical all-optical linearization scheme for a Mach-Zehnder modulator (MZM) for use within Microwave Photonic systems is proposed and demonstrated. It utilizes the complimentary output of a 2-output MZM to create a linearized transmitter. The concept is validated using fiber interconnected discrete components, achieving record linearity for a nonamplified link, with spurious free dynamic range (SFDR) of 118.5 dB.Hz2/3 for a single fiber system. This novel linearization scheme can be easily incorporated into photonic integrated circuits, such as on the Silicon Photonics platform with heterogeneous III–V integration, enabling high-performance, high-volume, low-cost systems.
{"title":"Linearized Mach-Zehnder Modulators for Microwave Photonic Applications","authors":"P. Morton, J. Khurgin, M. Morton","doi":"10.1109/MWP54208.2022.9997669","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997669","url":null,"abstract":"A practical all-optical linearization scheme for a Mach-Zehnder modulator (MZM) for use within Microwave Photonic systems is proposed and demonstrated. It utilizes the complimentary output of a 2-output MZM to create a linearized transmitter. The concept is validated using fiber interconnected discrete components, achieving record linearity for a nonamplified link, with spurious free dynamic range (SFDR) of 118.5 dB.Hz2/3 for a single fiber system. This novel linearization scheme can be easily incorporated into photonic integrated circuits, such as on the Silicon Photonics platform with heterogeneous III–V integration, enabling high-performance, high-volume, low-cost systems.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129300769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997665
Changlong Du, Shifeng Liu, Li Yang, Mingzhen Liu, Dan Zhu, S. Pan
Low-phase-noise dual-tone radio frequency (RF) signal generation is realized by injecting a low-frequency signal into a dual-passband optoelectronic oscillator (OEO). The dual-passband OEO is realized by paralleling two individual electrical filters with different center frequencies in the oscillation loop, and the injection signal’s frequency equals the frequency difference between the two generated oscillation signals. Due to the modulation nonlinearity of the oscillation loop, the low-frequency injection signal enables mutual frequency conversion between the two oscillation frequencies, leading to sustained mutual injection locking. In a proof-of-concept experiment, two RF signals with frequencies of 10.6637 GHz and 14.0008 GHz are simultaneously generated by injecting a 3.3371-GHz signal into the proposed OEO. The phase noises at a 10-kHz frequency offset of the generated RF signals are −140.06 dBc/Hz and −140.13 dBc/Hz, respectively, and the side-mode suppression ratios are larger than 60 dB.
{"title":"Low-phase-noise Dual-tone RF Signal Generation Based on an Optoelectronic Oscillator","authors":"Changlong Du, Shifeng Liu, Li Yang, Mingzhen Liu, Dan Zhu, S. Pan","doi":"10.1109/MWP54208.2022.9997665","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997665","url":null,"abstract":"Low-phase-noise dual-tone radio frequency (RF) signal generation is realized by injecting a low-frequency signal into a dual-passband optoelectronic oscillator (OEO). The dual-passband OEO is realized by paralleling two individual electrical filters with different center frequencies in the oscillation loop, and the injection signal’s frequency equals the frequency difference between the two generated oscillation signals. Due to the modulation nonlinearity of the oscillation loop, the low-frequency injection signal enables mutual frequency conversion between the two oscillation frequencies, leading to sustained mutual injection locking. In a proof-of-concept experiment, two RF signals with frequencies of 10.6637 GHz and 14.0008 GHz are simultaneously generated by injecting a 3.3371-GHz signal into the proposed OEO. The phase noises at a 10-kHz frequency offset of the generated RF signals are −140.06 dBc/Hz and −140.13 dBc/Hz, respectively, and the side-mode suppression ratios are larger than 60 dB.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116661838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997651
Xi Wang, Wei Wei, Weilin Xie, Yi Dong
We present an ultra-stable wideband signal distribution system via a star-like fiber network. By inserting a 26 GHz probe signal and precisely measuring its round-trip delay variation with double optical mixing, the link length variation has been accurately compensated, leading to a distributed transmission network with stability on the order of femtosecond. Experimentally, a wideband signal ranging from 8 GHz to 12 GHz is distributed from a local end to 2 remote ends via 20 km fiber links. The root-mean-square delay jitters of the transmitted wideband signals are between 10 to 20 femtoseconds within an hour. The proposed wideband signal transfer scheme is highly desired for distributed systems with high stability and strict coherence requirements.
{"title":"Ultra-stable wideband signal transfer for distributed systems","authors":"Xi Wang, Wei Wei, Weilin Xie, Yi Dong","doi":"10.1109/MWP54208.2022.9997651","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997651","url":null,"abstract":"We present an ultra-stable wideband signal distribution system via a star-like fiber network. By inserting a 26 GHz probe signal and precisely measuring its round-trip delay variation with double optical mixing, the link length variation has been accurately compensated, leading to a distributed transmission network with stability on the order of femtosecond. Experimentally, a wideband signal ranging from 8 GHz to 12 GHz is distributed from a local end to 2 remote ends via 20 km fiber links. The root-mean-square delay jitters of the transmitted wideband signals are between 10 to 20 femtoseconds within an hour. The proposed wideband signal transfer scheme is highly desired for distributed systems with high stability and strict coherence requirements.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126198457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.1109/MWP54208.2022.9997699
A. Kanno
We discuss the convergence technologies between terahertz and optical networks to realize 6G and beyond systems. Advantages and challenges for 100-Gbit/s or higher capacity link and network are also discussed.
{"title":"Convergence between terahertz and optical systems for 6G and beyond networks","authors":"A. Kanno","doi":"10.1109/MWP54208.2022.9997699","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997699","url":null,"abstract":"We discuss the convergence technologies between terahertz and optical networks to realize 6G and beyond systems. Advantages and challenges for 100-Gbit/s or higher capacity link and network are also discussed.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125720117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A dual-wavelength optically injected semiconductor laser system working with period-one dynamic is proposed for generation of frequency-modulated microwave signals. In the proposed system, two master lasers with different frequencies are combined and injected into a slave laser simultaneously. Thanks to the period-one oscillations, frequency-modulated microwave signals can be generated without using extra modulates or signal generates. Numerical simulations based on a set of modified nonlinear rate equations are conducted to investigate the performance of the proposed system, and a proof-of-concept experiment is carried out, in which a frequency-modulated microwave signal having a bandwidth of 5.3 GHz (13.2–18.5 GHz) is successfully generated.
{"title":"Frequency-modulated Microwave Signal Generation by Dual-Wavelength Optically Injected Semiconductor Laser","authors":"Xiaoyue Yu, Fangzheng Zhang, Guanqun Sun, Boyang Wu, S. Pan, Yuewen Zhou","doi":"10.1109/MWP54208.2022.9997620","DOIUrl":"https://doi.org/10.1109/MWP54208.2022.9997620","url":null,"abstract":"A dual-wavelength optically injected semiconductor laser system working with period-one dynamic is proposed for generation of frequency-modulated microwave signals. In the proposed system, two master lasers with different frequencies are combined and injected into a slave laser simultaneously. Thanks to the period-one oscillations, frequency-modulated microwave signals can be generated without using extra modulates or signal generates. Numerical simulations based on a set of modified nonlinear rate equations are conducted to investigate the performance of the proposed system, and a proof-of-concept experiment is carried out, in which a frequency-modulated microwave signal having a bandwidth of 5.3 GHz (13.2–18.5 GHz) is successfully generated.","PeriodicalId":127318,"journal":{"name":"2022 IEEE International Topical Meeting on Microwave Photonics (MWP)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114574224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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