Polarization-independent vertical coupler for photonics integration.
We present the first systematic design approach for compact polarization-independent mode-size transformers based on tapered resonant vertical couplers with transfer efficiencies greater than 90%. Resonant coupling occurs at a critical taper width having equal TE and TM effective index. Being polarization-independent broadens the usefulness of vertical coupler as a building block for minimizing insertion loss in photonic integrated circuits.
Chin
Mee-Koy
MK
Lee
Chee-Wei
CW
Shen
Jinyuan
J