Wavelength multiplexing and demultiplexing using multiwavelength VCSEL and resonance-enhanced photodetector arrays

A novel wavelength-division-multiplexed optical interconnect is demonstrated in which optical data from a monolithic wavelength-chirped VCSEL array is multiplexed onto a single fiber, and then demultiplexed using an array of wavelength-selective resonance-enhanced photodetectors with closely matched/resonance wavelengths. This is demonstrated under both DC and 125 Mb/s data modulation, achieving an optical crosstalk rejection ratio of /spl sim/-10 dB (-7.5 dB) for channels that are spaced 6 nm (4 nm) apart.