Abstract
Integrated optical asymmetric Mach–Zehnder interferometer-based dense wavelength
division multiplexing (DWDM) channel interleaver structures (2 × 2) have been
theoretically studied using various single-mode waveguide geometries in
silicon-on-insulator platform. Subsequently, a dispersion-free interleaver design has
been proposed, fabricated, and characterized. It was designed to separate alternate DWDM
channels with 100 GHz spacings. Some of the fabricated prototype devices have been fiber
pigtailed and packaged in a suitably designed metal housing. The transmitted spectra
(1520 nm < λ < 1600 nm) at each of the output ports reveal that
alternate DWDM channel wavelengths are separated with a uniform inter-channel extinction
of ~18 dB. Each of the channel passbands shows their 3-dB bandwidth of ~40 GHz.
© 2011 IEEE
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