News on China's scientific and technological development.

vincent

Grumpy Old Man
Staff member
Moderator - World Affairs
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China Mobile launched the first 800G hollow-core fiber (HCF) transmission technology test network in Shenzhen-Dongguan, Guangdong

I'm not technical enough to understand the significance here
可突破实芯光纤的容量极限和时延极限两大物理瓶颈

Probably has higher upper limits on transmission capacity and speed. Light travels slower in denser material like glass?
 

BoraTas

Captain
Registered Member
可突破实芯光纤的容量极限和时延极限两大物理瓶颈

Probably has higher upper limits on transmission capacity and speed. Light travels slower in denser material like glass?
My cursory search tells me you are right. There are several benefits
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They may be useful for data transmission, particularly in cases where a very low latency (time delay) is vital. Also, one may exploit low-loss data transmission in spectral regions where the absorption losses of solid-core silica fibers are too high. By transmitting light with an overall substantially larger optical bandwidth, one may realize higher transmission capacities in terms of data rate.
 

supercat

Major
AM Turing Award (computer science) winner Andrew Yao renounced his US citizenship after returning to China about 20 years ago.

Xi acclaims AI expert Andrew Yao who renounced US citizenship after return to China​

  • Turing prizewinner Yao earlier wrote to Xi, saying he wanted to contribute to the ‘great rejuvenation of the Chinese nation’
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