Sensitivity improvement of broadband electro-optic polymer-based optical phase modulator using 1D and 2D photonic crystal structures
2017
This Letter introduces the design and simulation of a microstrip-line-based electro-optic (EO) polymer optical
phase modulator (PM) that is further enhanced by the addition of photonic crystal (PhC) structures that are in
close proximity to the optical core. The slow-wave PhC structure is designed for two different material configurations
and placed in the modulator as a superstrate to the optical core; simulation results are depicted for both
1D and 2D PhC structures. The PM characteristics are modeled using a combination of the finite element
method and the optical beam propagation method in both the RF and optical domains, respectively.
The phase-shift simulation results show a factor of 1.7 increase in an effective EO coefficient (120 pm/V) while
maintaining a broadband bandwidth of 40 GHz.
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