Polarization-independent vertical coupler for photonics integration

• Published in: Optics express Vol. 12; no. 1; pp. 117 - 123
• Main Authors: Chin, Mee-Koy, Lee, Chee-Wei, Shen, Jinyuan
• Format: Journal Article
• Language: English
• Published: United States 12.01.2004

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 polari...