HardwareSemiconductorsTechnology

Copper-Free Photonic Chips Unlock Reliable Multi-Wavelength Light Generation

Scientists have discovered that removing trace copper ions from photonic integrated circuits enables perfect generation of optical frequency combs. This breakthrough addresses thermal instability issues that have hampered chip-scale photonic applications for decades.

Breakthrough in Photonic Chip Purity

Researchers have demonstrated that eliminating microscopic copper contamination from photonic integrated circuits enables reliable generation of sophisticated light spectra, according to a recent study published in Nature. The findings, reportedly from Ji and colleagues, reveal that even trace amounts of copper ions—previously considered negligible—can severely degrade the performance of optical microchips used in communications and sensing applications.

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BT Announces Leadership Transition in Network Security Division as Watson Retires

BT Group has revealed executive changes in its network leadership team. Howard Watson will retire from his chief security and networks officer position in March 2026, with Greg McCall taking over the role effective January 2026. The transition comes as BT pushes forward with major network expansion initiatives.

Executive Transition at BT’s Network Division

BT Group has announced that Howard Watson, the company’s long-serving chief security and networks officer, will retire from his position in March 2026, according to company reports. Sources indicate that Greg McCall, currently chief networks officer, will assume the expanded role of chief security and networks officer effective January 1, 2026, marking a significant leadership transition for the telecommunications giant.