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(a) Schematic diagram of the VIDOT, (b) top view of the fabricated device with waveguide length .
Nonlinear s-shape current–voltage characteristics of a MQW VIDOT.
Light vs current characteristic curves for the cavity length VIDOT operating at .
Spectral output of WDOT-LD with input a bias current 1.22 times threshold. Optical input light of is used for DFB-LD at .
Spectral output of VIDOT with a bias current 1.22 times threshold. Optical input light of is used for DFB-LD at . The peak wavelength of emission is at .
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