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Monday, January 6, 2025 at 2:35PM Gazettabyte is asking industry figures to pick their reads of the year. In the penultimate entry, Prof. Yosef Ben Ezra, Dave Welch, William Webb, and Abdul Rahim share their favourite reads.
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Professor Yosef Ben Ezra, PhD, CTO, NewPhotonics
My reading in 2024 continued to augment my technical knowledge with insights on how to bring innovation to the market.
Tuesday, October 29, 2024 at 3:47PM What will be the leading markets for photonic integrated circuits (PICs) by the decade's end? And what are the challenges facing the PIC industry?
SiLC Technologies' Lidar PIC. Source: SiLC Technologies.
A panel session at the recent PIC Summit Europe event held in Eindhoven, The Netherlands, looked at what would be the markets for photonic integrated circuits by 2030.
The market for PICs is dominated by datacom and telecom. However, emerging applications include medical and wearable devices, optical computing, autonomous vehicles, and sensing applications for the oil, gas, water, and agriculture industries.
Friday, September 1, 2023 at 6:07PM Dave Welch on how entrepreneurial problem-solving skills can tackle some of society's biggest challenges
Dave Welch is best known for being the founder and chief innovation officer at Infinera, the optical equipment specialist. But he has a history of involvement in social causes.
In 2012, Welch went to court to fight for the educational rights of children in schools in California, a story covered by newspapers in the US and abroad and featured on the front cover of Time magazine.
Tuesday, October 4, 2022 at 1:57PM Gazettabyte is asking industry and academic figures for their thoughts after attending ECOC 2022, held in Basel, Switzerland. In particular, what developments and trends they noted, what they learned, and what, if anything, surprised them.
In Part 1, Infinera's David Welch, Cignal AI's Scott Wilkinson, University of Cambridge's Professor Seb Savory, and Huawei's Maxim Kuschnerov share their thoughts.
Tuesday, September 15, 2020 at 8:31PM Ciena and Infinera have each demonstrated the transmission of 800-gigabit wavelengths over near-1,000km distances, continuing coherent's marked progress. But what next for coherent now that high-end optical transmission is approaching the theoretical limit? Can coherent compete over shorter spans and will it find new uses?
The first of several articles addressing what next for coherent.
Part 1: XR Optics
“I’m going to be a bit of a historian here,” says Dave Welch, when asked about the future of coherent.
Interest in coherent started with the idea of using electronics rather than optics to tackle dispersion in fibre. Using electronics for dispersion compensation made optical link engineering simpler.
Dave Welch
Coherent then evolved as a way to improve spectral efficiency and reduce the cost of sending traffic, measured in gigabit-per-dollar.
“By moving up the QAM (quadrature amplitude modulation) scale, you got both these benefits,” says Welch, the chief innovation officer at Infinera.
400ZR, 5G, Coherent, DAA, Dave Welch, II-VI, Infinera, Lumentum, Nyquist sub-carriers, Rob Shore, XR Optics Print Article Thursday, February 27, 2020 at 11:38AM The 50th anniversary of two key optical developments will be celebrated at the upcoming OFC show to take place in San Diego starting March 8th.
Back in 1970 the first low-loss fibre and the first room-temperature semiconductor laser were demonstrated.
Jun Shan Wey“The low-loss fibre had a loss of 16 decibels-per-kilometre,” says Jun Shan Wey of ZTE and the OFC programme co-chair. “Without such optical fibre, there would be no chance of any long-distance communication.”
The advent of a semiconductor laser operating at room temperature was another development of key importance, she adds.
Friday, September 27, 2019 at 7:04AM An optical architecture for traffic aggregation that promises to deliver networking benefits and cost savings was unveiled by Infinera at this week’s ECOC show, held in Dublin.
Traffic aggregation is used widely in the network for applications such as fixed broadband, cellular networks, fibre-deep cable networks and business services.
Dave Welch
Infinera has developed a class of optics, dubbed XR optics, that fits into pluggable modules for traffic aggregation. And while the company is focussing on network edge applications such as 5G, the technology could be used in thedata centre.
Optics is inherently a point-to-point communications technology. Yet optics is applied to traffic aggregation, a point-to-multipoint architecture, resulting in inefficiencies, says Infinera.
“The breakthrough here is that, for the first time in optics’history, we have been able to make optics work to match the needs of an aggregation network,” says Dave Welch, founder and chief innovation officer at Infinera.
