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Provide a peace of mind High-Capacity Optical Communications (Next-Generation Communication Network)

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Silica glass based optical waveguide device for the coherent optical communication.

A major feature of PLC is that remarkably low loss waveguides can be formed at low cost in comparison with other waveguide materials like polymers and semiconductors. However, further minimization is required to realize large-scale optical circuits. For this purpose, development to greatly increase the refractive index of the waveguide and low transmission loss PLC were necessary.

We achieved the PLC of refractive index Δ=5.5 % and having equivalent loss performance to the conventional PLC; using this technology, we have succeeded to the experimental manufacturing of a compact coherent mixer of 4 mm x 2 mm.

This achievement was awarded to Best Paper Award in the international conference (OECC2013).

Conventional PLC component
Conventional PLC component
Compact PLC component (Experimental manufacturing)
Compact PLC component (Experimental manufacturing)

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