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NeoPhotonics Laser Targets Low Earth Orbit Satellites

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Radiation tolerant coherent low noise tuneable Laser has flexible software to extend operating life

NeoPhotonics has announced its new Radiation Tolerant version of its industry leading Nano ultra-pure light tunable laser which has been designed for use in low earth orbit satellite communications applications.

NeoPhotonics' current Nano-ITLA laser is in high volume production for terrestrial fibre optics applications and is used by many of the leading optical networking companies in their most advanced coherent pluggable modules and high-speed embedded systems. This new radiation tolerant laser introduces enhancements including an adaptive approach to achieve extended lifetime operation of the proven Nano laser hardware in a radiation flux environment to enable reliable operation in space without compromise to performance and stability.

Multiple companies are now deploying or developing constellations of low earth orbit satellites to bring high bandwidth communications to areas not currently served by wireless infrastructure. These constellations consist of thousands of satellites which must have high bandwidth connections between them to avoid service drop-outs. These satellite-to-satellite communications links are now shifting from microwave to coherent optical technology, taking advantage of the vast increase in transmission capacity developed for terrestrial fibre optic communications, where 800Gbps is now regularly transmitted on a single wavelength.

One example of the laser control subsystem electronics which is particularly vulnerable to ionizing radiation is the memory (RAM and FLASH) that microprocessors rely on. While radiation effects on memory can be lessened by using special packaging or by more expensive hardware components, the effects of ionizing radiation on memory corruption can also be mitigated by incorporating radiation tolerant software enhancements, resulting in greatly improved reliability, recovery and resilience, as has been demonstrated during laboratory testing designed to simulate low earth orbit conditions

“NeoPhotonics has been a leader in the design, development and high-volume production of ultra-narrow linewidth tuneable lasers for coherent communications over the last decade, and we are excited to offer our high performance to the exciting new application of satellite communications” said Tim Jenks, Chairman and CEO of NeoPhotonics. “We have used our long experience and deep understanding of lasers technology to develop an innovative software-centric approach to radiation tolerance that speeds time to market, while maintaining performance and limiting costs,” concluded Jenks.

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