Abstract
A novel triangular-shaped plasmonic metal-insulator-metal (MIM) Bragg grating
waveguide is introduced, whose band-gap is narrower than that of the conventional
step type and wider than that of the sawtoothshaped one. Moreover apodized
triangular-shaped MIM Bragg grating structures are proposed in order to reduce the
side lobes of the transmission spectrum, because the Bragg reflector with a sawtooth
profile has a smoother transmission spectrum than that of a triangular-shaped one.
The performance of the proposed structures is simulated by using the finite
difference time domain method.
© 2011 Optical Society of Korea
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