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2023 Optical Fiber Communications Conference and Exhibition, OFC 2023

作者： Bahmanian, Meysam Fard, Saeed Scheytt, Christoph Paderborn University System and Circuit Technology Group Heinz Nixdorf Institute Paderborn Germany

ISBN: (纸本)9781957171180

In this demo we show an ultra-low phase noise optoelectronic PLL (OEPLL) based on optical clock source. The output signal of this type of PLL is in the electrical domain and its reference oscillator, typically a mode-locked laser, operates in the optical domain. The OEPLL has a frequency range of 2-20 GHz. The OEPLL has an in-band phase noise of below -150 dBc/Hz at 100-kHz offset frequency for a carrier frequency of 10 GHz. This phase noise level is 10-20 dB better than state-of-the-art commercial frequency synthesizers. © 2023 The Author(s).

关键词： Phase locked loops

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Nonlinear Noise Mechanisms in Active Devices: Additive Amplitude Noise and Phase Noise

arXiv

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arXiv 2024年

作者： Bahmanian, Meysam System and Circuit Technology Group Heinz Nixdorf Institute Paderborn University Paderborn33102 Germany

In this report, we lay the foundation for amplitude noise and phase noise analysis in nonlinear devices. We build a theoretical framework that helps us to analyze extremely difficult problems which include both nonlinearity and noise of semiconductors. Using our proposed framework, we analytically calculate the amplitude noise and phase noise of nonlinear RC circuits in the presence of nonlinear capacitance and conductance. As a more practical example, we analyze the amplitude noise and phase noise of a common-emitter stage bipolar transistor. © 2024, CC BY-NC-ND.

关键词： Phase noise

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A 28-Gb/s 27.2mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS technology

A 28-Gb/s 27.2mW NRZ Full-Rate Bang-Bang Clock and Data Reco...

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BiCMOS and Compound Semiconductor Integrated circuits and technology Symposium (BCICTS)

作者： Mohammed Iftekhar Harshan Gowda Pascal Kneuper Babak Sadiye Wolfgang Mueller J. Christoph Scheytt Department of System and Circuit Technology Heinz Nixdorf Institute Paderborn University Paderborn Germany

This paper presents a 28-Gb/s full-rate NRZ bang-bang clock and data recovery (CDR) in 22 nm FD-SOI CMOS technology. In order to reduce supply voltage and power dis-sipation, class-AB current-mode logic (CML) and forward-body biasing (FBB) are extensively used. Furthermore, the clock driver and clock path in the bang-bang phase detector are carefully optimized. The circuit operates reliably in a wide range of supply voltages from 0.8 to 1.2 V without adjustment of the body biasing. The CDR core dissipates 27.2mW at 0.8V supply voltage and 54.4 mW at 1.2 V supply voltage. The recovered full-rate data surpasses jitter tolerance with a good margin (BER less than 10– 12 ) over the entire supply voltage range. A figure-of-merit (FoM) of 0.97 mW/ Gb/s for 0.8 V supply voltage is achieved. This FoM represents the best FoM for full-rate NRZ bang-bang CDRs above 20 Gb/s and compares reasonably well with high-speed half-rate and quarter-rate NRZ CDR FoM $s$ .

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Broadband Mach-Zehnder Modulator with Linear Driver in Electronic-Photonic Co-Integrated Platform

Broadband Mach-Zehnder Modulator with Linear Driver in Elect...

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Integrated Photonics Research, Silicon and Nanophotonics, IPR 2022

作者： Kress, Christian Schwabe, Tobias Rhee, Hanjo Kerman, Sarp Scheytt, J. Christoph Paderborn University Department of Circuit & System Technology Heinz Nixdorf Institute Warburger Str. 100 Paderborn33098 Germany Sicoya GmbH Carl-Scheele-Straße 16 Berlin12489 Germany

ISBN: (纸本)9781557528209

A monolithically integrated electronic-photonic Mach-Zehnder modulator is presented, incorporating electronic linear drivers along photonic components. An electrooptical 3 dB & 6 dB bandwidth of 24 GHz and 34 GHz respectively was measured. The on-chip drivers decrease the Vπ by a factor of 10. © Optica Publishing Group 2022.

关键词： Light modulators

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Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics

Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channel...

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CLEO: Science and Innovations, S and I 2022

作者： Misra, Arijit Singh, Karanveer Meier, Janosch Kress, Christian Schwabe, Tobias Preussler, Stefan Scheytt, J. Christoph Schneider, Thomas THz Photonics Group Technische Universität Braunschweig Schleinitzstraße 22 Braunschweig38106 Germany Paderborn University System and Circuit Technology Heinz Nixdorf Institute Fürstenalle 11 Paderborn33098 Germany

We report for the first time, inter-symbol-interference (ISI) free demultiplexing of Nyquist optical time division multiplexed (OTDM) signals using a reconfigurable orthogonal sinc-pulse sampling enabled by silicon ph... 详细信息

ISBN: (纸本)9781557528209

关键词： Silicon photonics

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Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics

Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channel...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Arijit Misra Karanveer Singh Janosch Meier Christian Kress Tobias Schwabe Stefan Preussler J. Christoph Scheytt Thomas Schneider THz Photonics Group Technische Universität Braunschweig Braunschweig Germany System and Circuit Technology Heinz Nixdorf Institute Paderbom University Paderbom Germany

We report for the first time, inter-symbol-interference (ISi) free demultiplexing of Nyquist optical time division multiplexed (OTDM) signals using a reconfigurable orthogonal sinc-pulse sampling enabled by silicon ph... 详细信息

ISBN: (数字)9781957171050

ISBN: (纸本)9781665466660

关键词： Mach-Zehnder interferometers Demultiplexing Lasers and electrooptics Electro-optic modulators Silicon photonics Time division multiplexing Optical modulation

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High modulation efficiency segmented mach-zehnder modulator monolithically integrated with linear driver in 0.25 µm BiCMOS technology

High modulation efficiency segmented mach-zehnder modulator ...

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Integrated Photonics Research, Silicon and Nanophotonics, IPR 2021 - Part of OSA Advanced Photonics Congress 2021

作者： Kress, Christian Singh, Karanveer Schwabe, Tobias Preußler, Stefan Schneider, Thomas Christoph Scheytt, J. System and Circuit Technology Group Heinz Nixdorf Institut Universität Paderborn Fürstenallee 11 Paderborn33102 Germany THz-Photonics Group Technische Universität Braunschweig Schleinitzstr. 22 Braunschweig38106 Germany

We present a monolithically integrated electronic-photonic Mach-Zehnder modulator with a linear, segmented driver on the same silicon substrate. As metric for the modulation efficiency, the external Vπ is hereby redu... 详细信息

ISBN: (纸本)9781557528209

关键词： Efficiency

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Optical PRBS generation with threefold bandwidth of the employed electronics and photonics

Optical PRBS generation with threefold bandwidth of the empl...

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Signal Processing in Photonic Communications, SPPCom 2021 - Part of OSA Advanced Photonics Congress 2021

作者： Singh, Karanveer Meie, Janosch Preußler, Stefan Kress, Christian Scheytt, J. Christoph Schneider, Thomas THz-Photonics Group Technische Universität Braunschweig Schleinitzstr. 22 Braunschweig38106 Germany Research Group System and Circuit Technology Heinz Nixdorf Institut Universität Universität Paderborn F¨urstenallee 11 Paderborn33102 Germany

We present the optical generation of a 300 Gbaud PRBS-7 data signal based on time-division multiplexing of Nyquist sinc-pulse sequences. The employed electronic and photonic components need only one-third of the final...

ISBN: (纸本)9781557528209

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Phase Noise Investigation for a Radar system with Optical Clock Distribution

Phase Noise Investigation for a Radar System with Optical Cl...

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European Radar Conference (EURAD)

作者： Stephan Kruse Meysam Bahmanian Pascal Kneuper Christian Kress Heiko G. Kurz Thomas Schneider J. Christoph Scheytt Heinz Nixdorf Institute and System and Circuit Technology Paderborn University Germany Volkswagen Aktiengesellschaft Germany THz-Photonics Technische Universität Braunschweig Germany

ISBN: (数字)9782874870613

ISBN: (纸本)9781728170602

This paper presents an analytical investigation of the phase noise in radar systems with optical clock distribution. In a first theoretical analysis, the phase noise of a frequency-modulated continous-wave (FMCW) optical clock signal is analyzed. In a second investigation, it is shown that the noise of the overall radar system is mainly degraded by the laser relative intensity noise and the frequency synthesizer phase noise. The theoretical analysis is validated by measurements. The measurements also show that the phase noise due to the optical components such as laser diodes, modulators, and photo detectors, is small compared to electronicially induced phase noise.

关键词： Phase noise Laser radar Semiconductor lasers Phase modulation Optical noise Clocks Photonics

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Above 60 GHz Bandwidth 10 GS/s Sampling Rate Track-and-Hold Amplifier in 130 nm SiGe BiCMOS technology

Above 60 GHz Bandwidth 10 GS/s Sampling Rate Track-and-Hold ...

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IEEE International Symposium on circuits and systems (ISCAS)

作者： Liang Wu Maxim Weizel J. Christoph Scheytt System and Circuit Technology Heinz Nixdorf Institute University of Paderborn Germany

ISBN: (数字)9781728133201

ISBN: (纸本)9781728133218

This paper presents a broadband track-and-hold amplifier (THA) based on switched-emitter-follower (SEF) topology. The THA exhibits both large- and small-signal bandwidth exeeding 60 GHz. It achieves an effective number of bits (ENOB) of 7 bit at 34 GHz input frequency and an ENOB of >5 bit over the whole input frequency bandwidth at sampling rate of 10 GS/s. Much higher sampling rates are possible but lead to somewhat worse performance. The chip was fabricated in a 130 nm SiGe BiCMOS technology from IHP (SG13G2). It draws 78 mA from a −4.8 V supply voltage, dissipating 375 mW.

关键词： Clocks Bandwidth Transmission line measurements Semiconductor device measurement Silicon germanium BiCMOS integrated circuits Oscilloscopes

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