Abstract
A scheme of triangular-shaped pulses with full duty cycle generation is proposed and analyzed.
Benefiting from the feature of orthogonal polarization, two approximate sinusoidal signals on different
polarization states can be combined without inducing coherent interference. By tuning the time
mismatching between the two signals, an approximately triangular-shaped profile can be obtained in the
optical intensity. It is found that the modulation index β is no longer a fixed one, but it can be
aligned within a proper range of 0.92 to 1.57. To evaluate the proposal, impacts of radio frequency
voltage fluctuation, bias voltage drift, and time mismatching are discussed. Within the defined fitting
error (η≤3%), the tolerable range of the modulation index, time mismatching, and voltage have been
found, which insures a simple operation in practice.
© 2017 Chinese Laser Press
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