Teramount’s scalable fibre-attach for co-packaged optics

Part 2: Co-packaged optics: fibre-attach

Hesham Taha recently returned from a trip to the US to meet with leading vendors and players serving the silicon photonics industry.

“It is important to continue probing the industry,” says Taha, the CEO of start-up Teramount.

Teramount specialises in fibre assembly technology: coupling fibre to silicon photonics chips.

Taha is now back in the US, this time to unveil Teramount’s latest product at this week’s OFC show being held in San Diego. The company is detailing a new version of its fibre assembly technology, dubbed Teraverse-XD, that doubles the density of fibres connected to a silicon photonics chip.

Teramount is also announcing it is working with GlobalFoundries, a leading silicon-photonics foundry.

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A coherent roadmap for co-packaged optics

Is coherent optics how co-packaged will continue to scale? Pilot Photonics certainly thinks so.

Part 1: Co-packaged optics 

Frank Smyth

Frank Smyth, CTO and founder of Pilot Photonics, believes the firm is at an important inflection point. 

Known for its comb laser technology, Pilot Photonics has just been awarded a €2.5 million European Innovation Council grant to develop its light-source technology for co-packaged optics. 

The Irish start-up is also moving to much larger premises and is on a recruitment drive. “Many of our projects and technologies are maturing,” says Smyth. 

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DustPhotonics raises funding for 800G and 1.6T modules

• DustPhotonics has raised $24 million in funding.
• The start-up has taped out its 200 gigabit-per-lane optical chip.
• DustPhotonics expects the 1.6-terabit module market to ramp, starting year-end.

Ronnen Lovinger

DustPhotonics, which develops chips for transmit optical sub-assemblies (TOSAs) for 400 and 800-gigabit pluggable optical modules, has raised $24 million. The funding extends its Series B funding round.

"When you start ramping up products, you have to iron out the creases around supply chain, production, and everything else," says Ronnen Lovinger, CEO of DustPhotonics.

DustPhotonics has several customers and a backlog of orders for its 400 and 800-gigabit photonic integrated circuits (PICs). The company has also taped out its 200 gigabit-per-lane chip and will have products later this year.

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imec's novel ADC promises faster sampling rates

The analogue-to-digital and digital-to-analogue converters (ADCs/DACs) are like the equals sign in mathematics.

Joris Van Driessche

The equals sign is taught as showing two sides of an equation being the same. But really, it is a gateway between two worlds. The same applies to the ADC and DAC, which equate between the analogue and digital worlds.

Progress in wireline communications, whether client-side optics or coherent optical modems at 800 gigabits and soon 1.6 terabit, means converters must sample at higher rates.

In February, at the IEEE International Solid-State Circuits Conference (ISSCC) in San Francisco, imec detailed a proof-of-concept chip design that promises to advance high-speed ADCs.

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OFC 2024 reflects a mature industry with new offshoots

• The three General Chairs preview the upcoming Optical Fiber Communications (OFC) conference and discuss photonics developments and trends.
• The General Chairs' role is to choose the plenary speakers, programme theme, and conference schedule.
• OFC takes place during March 24th-28th in San Diego, CA.*

Photonics, at least for traditional applications, has become a mature industry. So says Professor Dimitra Simeonidou, one of this year's OFC General Chairs.

Professor Dimitra Simeonidou

By traditional, Simeonidou is referring to classical optical communications.

But she also stresses new developments: the use of optical fibres for environmental sensing, optics for satellites, and quantum.

"Quantum is like a micro-OFC," says Simeonidou. "You have issues from technology to subsystem to system applications now appearing in the OFC programmes."

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The OIF's coherent optics work gets a ZR+ rating

The OIF has started work on a 1600ZR+ standard to enable the sending of 1.6 terabits of data across hundreds of kilometres of optical fibre. 

The initiative follows the OIF's announcement last September that it had kicked off 1600ZR. ZR refers to an extended reach standard, sending 1.6 terabits over an 80-120km point-to-point link. 

1600ZR follows the OIF's previous work standardising the 400-gigabit 400ZR and the 800-gigabit 800ZR coherent pluggable optics.      

The decision to address a 'ZR+' standard is a first for the OIF. Until now, only the OpenZR+ Multi-Source Agreement (MSA) and the OpenROADM MSA developed interoperable ZR+ optics.

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Optical transmission: sending more data over a greater reach

• Keysight Technologies' chart plots the record-setting optical transmission systems of recent years.

Source: Keysight Technologies

The chart, compiled by Dr Fabio Pittalá, product planner, broadband and photonic center of excellence at Keysight, is an update of one previously published by Gazettabyte. 

The latest chart adds data from last year's conferences at OFC 2023 and ECOC 2023. And new optical transmission achievements can be expected at the upcoming OFC 2024 show, to be held in San Diego, CA in March.

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