A two-segment optical DAC 40 Gb/s PAM4 silicon microring resonator modulator transmitter in 65nm CMOS

Roshan-Zamir, Ashkan; Wang, Binhao; Telaprolu, Shashank; Yu, Kunzhi; Li, Cheng; Seyedi, M. Ashkan; Fiorentino, Marco; Beausoleil, Raymond G.; Palermo, Samuel

doi:10.1109/oic.2017.7965503

Cited by 17 publications

(10 citation statements)

References 4 publications

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“…A hybrid-integrated PAM4 transmitter prototype with a 10 µm radius two-segment carrier-depletion microring modulator and a 65 nm CMOS IC driver using an optical DAC is shown in Fig. 11(a) [75]. The 40 Gb/s PAM4 optical measurement results are depicted in the eye-diagrams of Fig.…”

Section: Carrier-depletion Microring Modulatorsmentioning

confidence: 99%

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Modulation on Silicon for Datacom: Past, Present, and Future (Invited Review)

Wang¹,

Huang²,

Chen³

et al. 2019

PIER

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Datacenters become an important part of technical infrastructure. The Datacom traffic grows exponentially to satisfy the demands in IT services, storage, communications, and networking to the growing number of networked devices and users. High bandwidth and energy efficient optical interconnects are critical to improve overall productivity and efficiency in data centers. Mega-data centers are expected to address the power consumption and the cost in which optical interconnects contribute quite a large part. Silicon photonics is a promising platform to offer savings in power and potential increase in bandwidth for Datacom. Several modulation techniques are developed in silicon photonics to reduce the optical mode volume or enhance the light matter effect to further improve the modulation efficiency. Many other materials such as III-V and LiNbO 3 are integrated on silicon photonics to maximize the optical link performance. This paper reviews several modulation techniques for Datacom, from vertical-cavity surface-emitting laser (VCSEL) direct modulation to silicon photonics modulators then to hybrid silicon modulators.

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Section: Carrier-depletion Microring Modulatorsmentioning

confidence: 99%

“…(a) Hybrid-integrated PAM4 transmitter prototype with a 10 µm radius two-segment carrier-depletion microring modulator and a 65 nm CMOS IC driver; (b) Measured optical eye diagrams at 40 Gb/s[75].…”

mentioning

confidence: 99%

Modulation on Silicon for Datacom: Past, Present, and Future (Invited Review)

Wang¹,

Huang²,

Chen³

et al. 2019

PIER

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“…Wavelength tuning with an efficiency of < 20 mW/π over a full free-spectral range was also demonstrated. Similar to the segmentation of the electrodes in an MZM to realize an optical DAC, several groups [81][82][83] have investigated segmentation of phase shifters in a MRM. To implement PAM-4 modulation with a single MRM driven by two simple NRZ drivers, the MRM is modified by utilizing two phase shifters with a longer MSB segment and a shorter LSB segment as shown in figure 12(a).…”

Section: Mzms For Pammentioning

confidence: 99%

“…Higher voltage-swing and faster transistors available in BiCMOS pave the way for demonstration of BiCMOS driver and SiP modulator co-design for PAM-M modulation format [97,98]. In [98], a monolithic integration of the driver and optical PAM-4 modulator in BiCMOS process Figure 17: Demonstrations of electronic-photonic integrated PAM-4 transmitters: a) hybrid integration of a 3-segment MZM employing SISCAP phase shifter and a 40-nm-CMOS driver [100]; b) monolithic integration of a 2-segment MZM and a CMOS driver using a 90-nm CMOS process [96]; c) a segmented MRM and a hybrid integrated driver in 65-nm CMOS [82].…”

Section: Electronic-photonic Integrated Transmittersmentioning

confidence: 99%

Silicon photonic modulators for PAM transmissions

Shi

Sepehrian

et al. 2018

J. Opt.

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High-speed optical interconnects are crucial for both high performance computing and data centers. High power consumption and limited device bandwidth have hindered the move to higher optical transmission speeds. Integrated optical transceivers in silicon photonics using pulse-amplitude modulation (PAM) are a promising solution to increase data rates. In this paper, we review recent progress in silicon photonics for PAM transmissions.

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“…In this manuscript we focus on different silicon photonic (SiP) travelling wave Mach Zehnder modulator (TWMZM) architectures which enable PAM-4 signal generation in the optical domain versus generating the PAM-4 signal in electrical domain. Over the past few years, there has been significant work on PAM-4 generation using vertical-cavity surface-emitting lasers (VCSEL)s [7][8], silicon photonic ring modulators [9][10][11][12][13], silicon-germanium electrooptic modulators [14][15], III-V-onsilicon modulators [16] silicon hybrid modulators [17], TWMZMs [18][19][20][21][22][23][24], electro-optic polymer modulators [25] and LiNbO3 modulators [26]. In the majority of the presented works, PAM-4 is generated in the electrical domain either by passive power combination of two OOK signals or using digital to analog convertors (DACs) and digital signal processing (DSP).…”

Section: Introductionmentioning

confidence: 99%

Silicon Photonic Mach–Zehnder Modulator Architectures for on Chip PAM-4 Signal Generation

Samani

El-Fiky

Morsy-Osman

et al. 2019

J. Lightwave Technol.

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Four level pulse amplitude modulation (PAM-4) has become the modulation format of choice to replace on-off keying (OOK) for the 400 Gb/s short reach optical communications systems. In this manuscript, we investigate the possible modifications to conventional Mach-Zehnder modulator structures to improve the system performance. We present 3 different Silicon photonic Mach-Zehnder modulator architectures for generating PAM-4 in the optical domain using OOK electrical driving signals. We investigate the transfer function and linearity of each modulator, and experimentally compare their PAM-4 generation and transmission performance with and without use of digital signal processing (DSP). We achieve the highest reported PAM-4 generation and transmission without the use of DSP. The power consumption of each modulator is presented, and we experimentally show that multi-electrode Mach-Zehnder modulators provide a clear advantage at higher symbol rates compared to conventional Mach-Zehnder modulators.

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A two-segment optical DAC 40 Gb/s PAM4 silicon microring resonator modulator transmitter in 65nm CMOS

Cited by 17 publications

References 4 publications

Modulation on Silicon for Datacom: Past, Present, and Future (Invited Review)

Modulation on Silicon for Datacom: Past, Present, and Future (Invited Review)

Silicon photonic modulators for PAM transmissions

Silicon Photonic Mach–Zehnder Modulator Architectures for on Chip PAM-4 Signal Generation

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