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Optical Communications Laboratory

To contribute to the development of connected society, we are promoting the continuous innovation of optical fiber technologies fundamental to the broadband communication network and its expansion into data centers and households.
We are also working on the applications of optical technologies to new fields.

Optical fiber

Since early 1970s, we have developed the vapor-phase axial deposition (VAD) method, the Japanese original technology to produce optical fibers efficiently. Based on this technology, we have been innovating advanced optical fibers and technologies to produce them efficiently.

Ultra-low loss optical fiber with pure silica core
Ultra-low loss optical fiber with pure silica core

Our ultra-low loss optical fibers based on pure-silica core technology are best for long-distance high-capacity communications, such as submarine optical cables. After our continuous innovation in glass and coating technologies, we achieved a transmission loss of 0.1419 dB/km at 1560 nm wavelength in 2017, which is a new record of lowest loss.

Next generation optical fibers / Connection technology

We are conducting R&D on innovative multi-core optical fibers (MCFs) and connection technology that overcome the limitation of conventional standard single-core fiber and pave the way for petabit optical transmission.

Multi-Core/single-core conversion connector
Multi-Core/single-core conversion connector

High-capacity interconnection technologies

We are developing high-capacity interconnections by our metal and optical cable technologies for rapidly expanding data centers, where high speed as well as low power consumption are required.
We are also working on the development of new high speed cables for appliances.

High-capacity interconnection technologies
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