Design, fabrication, and characterization of Si-based ARROW photonic crystal bend waveguides and power splitters.
Silicon-based (Si-based) photonic crystal waveguide based on antiresonant reflecting optical waveguide (ARROW PCW) structures consisting of 60° bends and Y-branch power splitters were designed and first efficiently fabricated and characterized. The ARROW structure has a relatively large core size suitable for efficient coupling with a single-mode fiber. Simple capsule-shaped topography defects at 60° photonic crystal (PC) bend corners and Y-branch PC power splitters were used for increasing the broadband light transmission. In the preliminary measurements, the propagation losses of the ARROW PC straight waveguides lower than 2 dB/mm with a long length of 1500 μm were achieved. The average bend loss of 60° PC bend waveguides was lower than 3 dB/bend. For the Y-branch PC power splitters, the average power imbalance was lower than 0.6 dB. The results show that our fabricated Si-based ARROW PCWs with 60° bends and Y-branch structures can provide good light transmission and power-splitting ability.
Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, Hsinchu 30010, Taiwan. hackerking.ee94g@nctu.edu.tw
Jian-Hua
JH
Chen
Yang-Tung
YT
Huang
Yu-Lin
YL
Yang
Ming-Feng
MF
Lu
Jia-Min
JM
Shieh
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods; D008027:Light; D055100:Optical Fibers; D012031:Refractometry / Q000295:instrumentation; D012825:Silicon / Q000737:chemistry
D012825:Silicon