Transmission of slow light through photonic crystal waveguide bends.
The spectral dependence of the bending loss of cascaded 60 degrees bends in photonic crystal (PhC) waveguides is explored in a slab-type silicon-on-insulator system. An ultralow bending loss of (0.05 +/- 0.03) dB/bend is measured at wavelengths corresponding to the nearly dispersionless transmission regime. In contrast, the PhC bend is found to become completely opaque for wavelengths corresponding to the slow-light regime. A general strategy is presented and experimentally verified to optimize the bend design for improved slow-light transmission.
IBM TJ Watson Research Center Yorktown Heights, New York 10536, USA. sassefa@us.ibm.com
Solomon
S
Assefa
Sharee J
SJ
McNab
Yurii A
YA
Vlasov