Optical fiber serves as a backbone infrastructure supporting global information and communication society. In order to meet exponentially increase of telecommunication traffics due to explosive expansion of service demands including cloud storages and 5G mobile communication network, it is essential to increase the transmission capacity of optical communication systems. Therefore, improvement on the optical fiber performance including transmission loss reduction is highly anticipated.
In 1988,
In 2017,
Examples of applications of Z-PLUS Fiber 150 with a transmission loss of 0.144 dB/km
Transoceanic submarine optical cable systems*3
Terrestrial trunk line, such as transcontinental networks
Transmission lines for quantum cryptography communication
Sensor applications, such as earthquake detection and fire detection
Various optical communication technologies that require ultra-low-loss characteristics
History of world records in optical fiber transmission loss
History of world records in optical fiber transmission loss
(The symbols of '?' and '?' represent the records set by
*1 Low-loss pure-silica core optical fiber
Optical fiber that achieves a low transmission loss by applying pure silica (SiO2) glass to the core area
*2 World-record transmission loss: 0.1419 dB/km
Reported on
https://global-sei.com/company/press/2017/03/prs029.html
*3 Advantages of ultra-low loss optical fiber for submarine optical cable systems
For example, transoceanic ultra-long-haul submarine cable systems are equipped with huge number of optical repeaters along the transmission line to amplify the attenuated optical signals. By applying the ultra-low-loss optical fiber newly released by
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