Two-way transmission experiments over a single optical fibre at the same wavelength using micro-optic 3 dB couplers

Two-way transmission of 10 Mb/s pulse signals at the same optical wavelength over a single 600 m optical fibre cable has been realise by employing newly developed small size and low loss micro-optic 3 dB couplers, GeAlAS l.e.d.s, a SELFOC® fibre cable, and conventional Si p.d.s and compact electronic circuits with TTL level interface.