III-V Optoelectronic Integrated Circuits
The integration of functionality in optical systems
is often limited by the difficulty of packaging and alignment. As a
result, it is very desirable to lithographically align devices with
different functionality on a single chip. Typical opto-electronic
circuits are constructed on III-V semiconductor substrates through
fabrication and regrowth, and I have had the opportunity to fabricate
such devices for signal processing,
heterodyning, and
wavelength-division multiplexers and de-multiplexers. Typical of this
work is the paper entitled
“Simultaneous multiple wavelength
operation of a multistripe array grating integrated cavity
lasers” which emerged from a collaboration with Julian Soole. This paper describes an array of 40 lasers that
are coupled to a single output waveguide and serves as a compact
integrated multi-wavelength source with a 1nm spectral resolution. A
similar paper with metal-semiconductor-metal detectors was also written
to complete this wavelength-division multiplexing scheme.
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