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Passive alignment of semiconductor lasers and singlemode fibres has been achieved for the first time using a micro-machined silicon substrate. Mechanical alignment features fabricated on the substrate surface were used to align the active regions of an InGaAsP/InP laser array to four singlemode fibres held in V grooves. Optical coupling efficiencies have been achieved that are comparable to values...
A new thin-film transfer technique has been developed that eliminates the handling of fragile, free-standing films. This, process was used to demonstrate the first long wavelength laser fabricated on a host substrate by a thin-film transfer technique. Ridge waveguide lasers operating at a wavelength of 1.3 mu m were fabricated on both GaAs and silicon substrates. The light-current characteristics...
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