Abstract
In this paper, we demonstrate the use of photonic crystal (PC) directional
couplers to separate light of wavelengths at 1.31 and 1.55 µm. The PC structure consists of InAlGaAs nanorods
arranged in hexagonal lattice. The simulation of our device is implemented
by the finite-difference time-domain method. The devices are fabricated by
e-beam lithography and conventional photolithography. We use the strong inverse
method (SIM) of e-beam lithography to make the pattern smoother. The measurement
results confirm that 1.31/1.55-µm wavelength splitter can be realized in PC structures formed by
nanorods.
© 2008 IEEE
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