Okamura chaired IEC SC86C (Fibre Optic Systems and Active Devices) during IEC TC86 meeting (on-line).
Four Working Groups below are under SC86C.
| WG 1 | Fibre optic communications systems and sub-systems |
| WG 2 | Fibre optic sensors |
| WG 3 | Optical amplifiers and dynamic modules |
| WG 4 | Fibre optic active components and devices |
