Low Crosstalk Simultaneous 12 ch x 25 Gb/s Operation of High-Density Silicon Photonics Multichannel Receiver

Aoki, Tsuyoshi; Akiyama, T.; Sugama, Atsushi; Hayakawa, A.; Muranaka, Hidenobu; Simoyama, T.; Tanaka, Shinsuke; Nishizawa, Motoyuki; Hatori, Nobuaki; Sobu, Yohei; Chen, Yanfei; Mori, Toshihiko; Sekiguchi, Satoshi; Jeong, Seok–Hwan; Tao, Yu; Morito, Ken

doi:10.1364/ofc.2017.w1a.2

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The RC equalizer de-emphasizes the excess EO response by a factor of 1/η 2 to expand the bandwidth. The 3-dB bandwidth can be calculated using (1).…”

Section: A Rc Equalization Techniquementioning

confidence: 99%

“…HE strong demand for large transmission capacities of optical network applications has resulted in an interest in low-cost and low-power integrated transceivers. This is one of the major motivations toward the development of silicon photonics-integrated circuits (Si-PIC) [1]. The Si-PICs offer numerous advantages, such as compatibility with complementary metal-oxide-semiconductor (CMOS) processes in standard foundries and realization of highly dense photonics-integrated circuits with good temperature immunity.…”

Section: Introductionmentioning

confidence: 99%

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High-Speed Optical Digital-to-Analog Converter Operation of Compact Two-Segment All-Silicon Mach–Zehnder Modulator

Sobu

Huang

Tanaka

et al. 2021

J. Lightwave Technol.

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An optical digital-to-analog converter (DAC) is a promising solution for the efficient generation of multilevel modulation signals without a high-speed electrical DAC and a large swing linear driver. We report the design and characterization of an all-Si segmented Mach-Zehnder modulator for an optical DAC transmitter. The modulator comprises a forward-biased positive intrinsic negative (PIN) phase shifter integrated with a passive resistance and capacitance (RC) equalizer (PIN-RC) to optimize a tradeoff between modulation efficiency and analog bandwidth. We successfully confirmed an eye diagram of 90-Gbaud NRZ signal owing to a wide 3-dB bandwidth of 43.9 GHz. Additionally, a 70-Gbaud four-level pulse amplitude modulation (PAM4) waveform can be obtained via the optical DAC operation using a lumped segmented modulator because of its broad electro-optic bandwidth and uniform characteristics. A two-segmented modulator has a compact footprint of 300 μm × 600 μm. Error-free performances based on the patterns of the PRBS11 of NRZ signals were obtained at 50-70 Gbaud. The bit-error-rates of 60-Gbaud PAM4 and 70-Gbaud PAM4 were less than the 7% hard and 25.5% soft decision forward error correction limits, respectively. The optical DAC transmitter using an all-Si segmented PIN-RC modulator is suitable for next-generation high-speed multilevel transmitters.

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“…The RC equalizer de-emphasizes the excess EO response by a factor of 1/η 2 to expand the bandwidth. The 3-dB bandwidth can be calculated using (1).…”

Section: A Rc Equalization Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Speed Optical Digital-to-Analog Converter Operation of Compact Two-Segment All-Silicon Mach–Zehnder Modulator

Sobu

Huang

Tanaka

et al. 2021

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…They can achieve a highly dense photonics integrated circuit (PIC) due to its high index contrast with the Si/SiO 2 waveguide. To date, some Si PICs have successfully demonstrated their largecapacity and highly-dense data transmission [3], [4]. A further increase in the transmission bandwidth is required for the next-generation standard of 400 Gbps and beyond while maintaining a low cost and a low power consumption.…”

Section: Introductionmentioning

confidence: 99%

High-Speed-Operation of All-Silicon Lumped-Electrode Modulator Integrated with Passive Equalizer

Sobu

Tanaka

Tao

2020

IEICE Trans. Electron.

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Silicon photonics technology is a promising candidate for small form factor transceivers that can be used in data-center applications. This technology has a small footprint, a low fabrication cost, and good temperature immunity. However, its main challenge is due to the high baud rate operation for optical modulators with a low power consumption. This paper investigates an all-Silicon Mach-Zehnder modulator based on the lumped-electrode optical phase shifters. These phase shifters are driven by a complementary metal oxide semiconductor (CMOS) inverter driver to achieve a low power optical transmitter. This architecture improves the power efficiency because an electrical digital-to-analog converter (DAC) and a linear driver are not required. In addition, the current only flows at the time of data transition. For this purpose, we use a PIN-diode phase shifter. These phase shifters have a large capacitance so the driving voltage can be reduced while maintaining an optical phase shift. On the other hand, this study integrates a passive resistance-capacitance (RC) equalizer with a PIN-phase shifter to expand the electro-optic (EO) bandwidth of a modulator. Therefore, the modulation efficiency and the EO bandwidth can be optimized by designing the capacitor of the RC equalizer. This paper reviews the recent progress for the high-speed operation of an all-Si PIN-RC modulator. This study introduces a metal-insulator-metal (MIM) structure for a capacitor with a passive RC equalizer to obtain a wider EO bandwidth. As a result, this investigation achieves an EO bandwidth of 35.7-37 GHz and a 70 Gbaud NRZ operation is confirmed.

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Ultra-Low-Power (1.59 mW/Gbps), 56-Gbps PAM4 Operation of Si Photonic Transmitter Integrating Segmented PIN Mach-Zehnder Modulator and 28-nm CMOS Driver

Tanaka

Simoyama

Aoki

et al. 2017

2017 European Conference on Optical Communication (ECOC)

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Low Crosstalk Simultaneous 12 ch x 25 Gb/s Operation of High-Density Silicon Photonics Multichannel Receiver

Cited by 6 publications

References 4 publications

High-Speed Optical Digital-to-Analog Converter Operation of Compact Two-Segment All-Silicon Mach–Zehnder Modulator

High-Speed Optical Digital-to-Analog Converter Operation of Compact Two-Segment All-Silicon Mach–Zehnder Modulator

High-Speed-Operation of All-Silicon Lumped-Electrode Modulator Integrated with Passive Equalizer

Ultra-Low-Power (1.59 mW/Gbps), 56-Gbps PAM4 Operation of Si Photonic Transmitter Integrating Segmented PIN Mach-Zehnder Modulator and 28-nm CMOS Driver

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