First 50G-PON merchant silicon spurs operator trials

Broadcom has unveiled the industry’s first merchant silicon for the 50-gigabit passive optical network (50G-PON) access standard. Until now, only access equipment players such as Huawei and ZTE had their own 50G-PON silicon.  

A 50G-PON network. Source: Adtran.

Broadcom has announced two 50G-PON devices: an optical line terminal (OLT) chip and the optical networking unit (ONU) 50-PON port to the users.  Both chips include custom hardware from Broadcom to run artificial intelligence (AI) machine-learning algorithms. 

Jim Muth, senior manager of product marketing at Broadcom, says supporting AI benefits the operator and the quality of the end user’s broadband service. 

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ECOC 2024 industry reflections - Part II

Gazettabyte is asking industry figures for their thoughts after attending the recent 50th-anniversary ECOC show in Frankfurt. Here are contributions from Nubis Communications' Dan Harding, imec's Peter Ossieur, and Chris Cole.

Dan Harding, CEO, Nubis Communications

Our biggest takeaway from ECOC is the increased confidence not just in 200-gigabit electrical and optical interfaces but also in 400 gigabit. It is becoming clear that in 2025 and 2026, the industry will broadly launch platforms using a 200 gigabit per lane serdes [serialiser/deserialiser interfaces] that will connect to 200 gigabit per lane optics.

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ECOC 2024 industry reflections

Gazettabyte is asking industry figures for their thoughts after attending the recent 50th-anniversary ECOC show in Frankfurt. Here are the first contributions from Huawei's Maxim Kuschnerov, Coherent's Vipul Bhatt, and Broadcom's Rajiv Pancholy.

Source: Shutterstock

Maxim Kuschnerov, Director R&D, Optical & Quantum Communication Laboratory at Huawei.

At ECOC, my main interest concerned the evolution of data centre networking to 400 gigabits per lane for optics and electronics. Historically, the adoption of new optical line rates always preceded the serdes electrical interconnects but now copper cables are likely to drive much of the leading development work at 400 gigabit per lane.

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Pluggable optics in need of a makeover

Current pluggable optics have stunted optical innovation for the last decade. So argues Chris Cole, industry veteran and an advisor at start-up Quintessent.

Chris Cole

Cole calls for a new form factor supporting hundreds of electrical and optical channels. In a workshop on massively parallel optics held at the recent ECOC conference and exhibition in Frankfurt, he outlined other important specifications such a module should have.

Cole, working with other interested parties in the new form factor, will present their proposal to the OIF industry body at its next meeting in November.

"I'm very optimistic it will be approved," says Cole.

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ECOC 2024: AI and Optics

Being interview by Gareth Spence of Adtran at the recent ECOC 2024 conference and exhibition

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Users embrace OpenLight's silicon photonics platform

OpenLight, the open silicon photonics platform provider, can point to a successful 2024 signing up new customers. 

In 2023, OpenLight had three customers bringing photonic integrated circuit (PIC) designs to market. OpenLight has since added 14 more.  

OpenLight was formed in 2022 when Juniper Networks carved out its silicon photonics arm. Synopsys acquired a three-quarters stake in OpenLight, while Juniper retained a quarter.

“In the past, the company hadn’t really done any revenue, including when they were in Juniper,” says Adam Carter, OpenLight’s CEO (pictured). “We’ve seen a ten times increase and shown that we can be very profitable.”

The start-up has been creating industry partnerships to better serve its customers' circuit design, chip manufacturing, and packaging needs.

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Ciena sends a 1.6T optical lambda over a 470km link

• Ciena details its first live trial result using its latest WaveLogic 6 Extreme coherent modem.
• The modem will be generally available at the end of the month.  

Ciena has detailed its newest coherent modem's first optical networking performance: sending 1.6 terabits of data over a 470km fibre link.   

Helen Xenos

The field trial used Ciena's WaveLogic 6 Extreme coherent modem in telecom operator Arelion's live network.

The link connects an Equinix data centre in Ashburn to a Telxius submarine cable landing station also in Virginia. 

"The fact that we are achieving 1.6-terabit wavelengths across close to 500 kilometres is a testament to the performance and integrity of the design," says Helen Xenos, senior director of portfolio marketing at Ciena.

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