Transmission and reflection characteristics of in-plane hetero-photonic crystals

Bong-Shik Song; Asano, Takashi; Akahane, Yoshihiro; Tanaka, Yoshinori; Noda, Susumu
November 2004
Applied Physics Letters;11/15/2004, Vol. 85 Issue 20, p4591
Academic Journal
We report transmission and reflection characteristics of in-plane hetero-photonic crystals (IP-HPCs) consisting of two serially connected photonic crystal waveguides with differing lattice constants. We show experimentally and theoretically that the transmission spectrum of the structure corresponds to the transmission frequency range common to both waveguides. Also, there exists a frequency gap where the structure has a guiding mode for one waveguide hut not for the neighboring one. Our calculated results reveal that light within the common frequency range is transmitted with approximately 100% efficiency through the waveguides while light within the gap is almost perfectly reflected.


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