Multi-wavelength Photonics Delivers Higher Throughput for AI Fabrics

Oct. 7, 2025

Xspace Photonics’ ChromX delivers 10X the throughput compared to single-channel fiber.

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Artificial intelligence (AI) gobbles up all available memory, compute power, and communication bandwidth. It’s in this space where fiber optics shines, with the ability to deliver more bandwidth to cloud data centers. At this point, most fiber links utilize a single wavelength, but the fibers are capable of handling multiple wavelengths simultaneously.

I talked with Vivek Raghunatham, CEO at Xscape Photonics, about the company’s ChromX technology, which supports multiple-wavelength communication on a single fiber (watch the video above). The CMOS silicon wafer platform is an optically pumped laser platform that can deliver more than 10X the bandwidth of a single-wavelength system while reducing overall power requirements as well (see figure).

Transmitters and receivers are in the foreground; the oscilloscope shows the 16 wavelength channels on one fiber — The transmitters and receivers are in the foreground; the oscilloscope shows the 16 wavelength channels on one fiber. The key is consistency between channels.

One key aspect of Xscape’s approach is that the performance of each wavelength is consistent. This is important because it provides consistency at the transmit and receiver ends. These would otherwise need to be adjusted or accommodated to provide reliable communication.

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Silicon Photonics

Data traveling at the speed of light may be the future of connectivity and computing.

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William G. Wong | Senior Content Director - Electronic Design and Microwaves & RF

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