Wavelength division two-way fibre-optic transmission experiments using micro-optic duplexers

Experimental two-way transmission of high-speed digital pulse signals over a single 10 km optical fibre line has been realised at 800 nm band, employing newly developed small size and low-loss micro-optic duplexers, AlGaAs d.h. lasers of different emission wavelengths, a spliced graded-index high-silica fibre and Si-a.p.d.s.