Demir, V. A. Sabnis, Jun-Fei Zheng, O. Fidaner, J. S. Harris, Jr., and
D. A. B. Miller, "Scalable wavelength-converting crossbar switches,"
IEEE Photonics Technology Letters 16, No.10, p.2305-7 (Oct. 2004)
We report scalable low-power
wavelength-converting crossbar switches that monolithically integrate
two-dimensional compact arrays of surface-normal photodiodes with
quantum-well waveguide modulators. We demonstrate proof-of-concept,
electrically reconfigurable 2*2 crossbars that perform unconstrained
wavelength conversion across 35 nm in the C-band (1530-1565 nm), using
only <4.3-mW absorbed input optical power, and with 10-dB extinction
ratio at 1.25 Gb/s. Such wavelength-converting crossbars provide
complete flexibility to selectively convert any of the input wavelengths
to any of the output wavelengths at high data bit rates in
telecommunication, with the input and output wavelengths being
arbitrarily chosen within the C-band.
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