TeraPHY: An O-Band WDM Electro-Optic Platform for Low Power, Terabit/s Optical I/O

Sun, Chen; Jeong, Daniel; Zhang, Mason; Bae, Woorham; Zhang, Chong; Bhargava, Pavan; Orden, Derek Van; Ardalan, Shahab; Ramamurthy, Chandarasekaran; Anderson, Erik; Katzin, Austin; Lü, He‐Zuo; Buchbinder, Sidney; Beheshtian, Behrooz; Khilo, Anatol; Rust, Michael; Li, Chen; Sedgwick, Forrest G.; Fini, John M.; Meade, Roy; Stojanović, Vladimir; Wade, Mark T.

doi:10.1109/vlsitechnology18217.2020.9265012

Cited by 23 publications

(10 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, to realize it, the energy efficiency of optical interconnects must be improved a lot. Currently, the Full-size  DOI: 10.7717/peerj-cs.420/fig- 13 bandwidth-efficiency product of commercial optical interconnects (long-reach) is almost 1,000x lower than that of electrical interconnects (Sun et al, 2020). Then why does a present optical interconnect consume that much power?…”

Section: Future Directionsmentioning

confidence: 99%

“…As a result, there are so many interfaces even in a single communication module, where electrical signals come out to the real analog world and experience bulky parasitics, which leads to such poor energy efficiency. That is, monolithic integration where optical devices and VLSI circuits are integrated in a single chip can be a solution for reducing the power consumption ( Sun et al, 2015a , 2015b , 2020 ; Narasimha et al, 2007 ). In addition to the monolithic integration, dense wavelength division multiplexing (DWDM) enables transmitting multiple data streams through a single optical fiber, which significantly improves the bandwidth density of optical interconnect.…”

Section: Interconnectmentioning

confidence: 99%

“…In fact, it has been more than 30 years ago that the optical interconnect began to gain attention, but there have been no succeed until recently. However, recently, the accumulated efforts are coming out with promising engineering samples such as 5-pJ/bit monolithic DWDM ( Sun et al, 2020 ), 6-pJ/bit 112-Gb/s PAM-4 ( Li et al, 2020 ), so the time will really come soon.…”

Section: Interconnectmentioning

confidence: 99%

See 2 more Smart Citations

Today’s computing challenges: opportunities for computer hardware design

Bae

2021

PeerJ Computer Science

Self Cite

View full text Add to dashboard Cite

Due to the explosive increase of digital data creation, demand on advancement of computing capability is ever increasing. However, the legacy approaches that we have used for continuous improvement of three elements of computer (process, memory, and interconnect) have started facing their limits, and therefore are not as effective as they used to be and are also expected to reach the end in the near future. Evidently, it is a large challenge for computer hardware industry. However, at the same time it also provides great opportunities for the hardware design industry to develop novel technologies and to take leadership away from incumbents. This paper reviews the technical challenges that today’s computing systems are facing and introduces potential directions for continuous advancement of computing capability, and discusses where computer hardware designers find good opportunities to contribute.

show abstract

Section: Future Directionsmentioning

confidence: 99%

Section: Interconnectmentioning

confidence: 99%

Section: Interconnectmentioning

confidence: 99%

See 1 more Smart Citation

Today’s computing challenges: opportunities for computer hardware design

Bae

2021

PeerJ Computer Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, to realize it, the energy efficiency of optical interconnects must be improved a lot. Currently, the bandwidthefficiency product of commercial optical interconnects (long-reach) is almost 1000x lower than that of electrical interconnects [160]. Then why does a present optical interconnect consume that much power?…”

Section: B Future Directionsmentioning

confidence: 99%

Peer Review #1 of "Today’s computing challenges: opportunities for computer hardware design (v0.1)"

2021

View full text Add to dashboard Cite

Due to explosive increase of digital data creation, demand on advancement of computing capability is ever increasing. However, the legacy approaches that we have used for continuous improvement of three elements of computer (process, memory, and interconnect) have started facing limit, and therefore they are not as effective as they used to be and are also expected to reach the end in the near future. Evidently, it is a big challenge for computer hardware industry. However, at the same time it also provides great opportunities to hardware design industry to develop novel technologies and to take leadership away from incumbents. This paper reviews the technical challenges that today's computing systems are facing and introduces potential directions for continuous advancement of computing capability, and discusses where computer hardware designers find good opportunities to contribute.

show abstract

“…Towards 800 G silicon photonic optical modules, there are many viable solutions such as PSM 4 × 200 G, PSM 8 × 100 G, and WDM 8 × 100 G [12][13][14]. There are also a few demonstrations of Terabit/s optical I/O chiplets integrated with multiple wavelength lasers and ASICs [15,16], which show the great potential for large capacity optical communication using the WDM techniques.…”

Section: Introductionmentioning

confidence: 99%

Numerical Demonstration of 800 Gbps WDM Silicon Photonic Transmitter with Sub-Decibel Surface-Normal Optical Interfaces

Zhang

et al. 2022

Micromachines

View full text Add to dashboard Cite

We propose and numerically demonstrate an 800 Gbps silicon photonic transmitter with sub-decibel surface-normal optical interfaces. The silicon photonic transmitter is composed of eight silicon Mach–Zehnder optical modulators and an interleaved AMMI WDM device. This WDM device comprises two 1 × 4 angled MMI and a Mach–Zehnder interferometer (MZI) optical interleaver with an apodized bidirectional grating which has about −0.5 dB coupling loss. Both the Mach–Zehnder electro-optical modulators and MZI optical interleaver regard the bidirectional grating coupler as vertical optical coupler and 3-dB power splitter/combiner. By importing the S-parameter matrices of all the components which have been carefully designed in simulation software, the circuit-level model of the optical transmitter can be built up. On this basis, the static and dynamic performance characterization were carried out numerically. For NRZ modulation, the optical transmitter exhibits the overall optical loss of 4.86–6.72 dB for eight wavelength channels. For PAM4 modulation, the optical loss is about 0.5 dB larger than that of NRZ modulation, which varies between 5.38–7.27 dB. From the eye diagram test results, the WDM silicon photonic transmitter can achieve single channel data transmission at 100 Gb/s NRZ data or 50 GBaud/s PAM4 symbol rate with acceptable bit error rate.

show abstract

TeraPHY: An O-Band WDM Electro-Optic Platform for Low Power, Terabit/s Optical I/O

Cited by 23 publications

References 1 publication

Today’s computing challenges: opportunities for computer hardware design

Today’s computing challenges: opportunities for computer hardware design

Peer Review #1 of "Today’s computing challenges: opportunities for computer hardware design (v0.1)"

Numerical Demonstration of 800 Gbps WDM Silicon Photonic Transmitter with Sub-Decibel Surface-Normal Optical Interfaces

Contact Info

Product

Resources

About