Silicon photonic circuit with polarization diversity.
We devised a silicon photonic circuit with polarization diversity that consists of polarization splitters and polarization rotators. The splitter is based on a simple directional coupler and the rotator has an off-axis double-core structure. Both devices can be made by using planar fabrication technology and require no complex proceses for the fabrication of three-dimensional structures. We fabricated a polarization-independent wavelength filter based on Si wire waveguides as an application of the polarization diversity. The filter consists of the polarization splitters, the rotators, and a ring resonator. The polarization-dependent loss of the filter is about 1 dB. A 10-Gbps data transmission with scrambled polarization is demonstrated.
Fukuda
Hiroshi
H
NTT Microsystem Integration Laboratories, 3-1, Morinosato-Wakamiya, Atsugi-Shi, Kanagawa, Japan. hfukuda@aecl.ntt.co.jp
Yamada
Koji
K
Tsuchizawa
Tai
T
Watanabe
Toshifumi
T
Shinojima
Hiroyuki
H
Itabashi
Sei-Ichi
S
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation* / Q000379:methods; D008027:Light; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D017785:Photons; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D012825:Silicon / Q000737:chemistry*
D012825:Silicon