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- Wangqing Yuan, Keisuke Kojima, +4 authors Eiji Yagyu
- Optics express
- 2012
A mode-evolution-based polarization rotator-splitter built on InP substrate is proposed by combining a mode converter and an adiabatic asymmetric Y-coupler. The mode converter, consisting of a… (More)
- Wangqing Yuan, Keisuke Kojima, +4 authors Eiji Yagyu
- 2012 38th European Conference and Exhibition on…
- 2012
A novel polarization splitter on an InP substrate utilizing an MMI coupler with a patterned gold layer and a tilted joint is proposed. The MMI section is less than 540 μm. Simulations show… (More)
- Wangqing Yuan, C. S. Seibert, D. C. Hall
- IEEE Journal of Selected Topics in Quantum…
- 2010
The matched-bends criterion, a method for effectively reducing the straight-bend-straight transition loss in planar optical waveguides, is applied to design a single-facet teardrop laser utilizing an… (More)
- Christopher S Seibert, Wangqing Yuan, Douglas C. Hall, Xiangning Luo, Tony Moretti, Alan R Sugg
- CLEO/QELS: 2010 Laser Science to Photonic…
- 2010
A high-index-contrast single output teardrop laser fabricated via oxygen-enhanced non-selective wet oxidation is demonstrated. The device offers a low (55 mA) threshold and high (138 mW) output power… (More)
- Wangqing Yuan, D. C. Hall
- Journal of Lightwave Technology
- 2011
A scaling rule is introduced for reducing the dimensions of a matched waveguide bend without inducing additional transition loss and applied to photonic integrated circuits employing high index… (More)
- Xiu Mei Xing, Wangqing Yuan, Douglas V. Hall, Patrick Fay
- 68th Device Research Conference
- 2010
Pseudomorphic high electron-mobility transistors (pHEMTs) have demonstrated excellent high-speed, power and noise performance, and have been widely used in microwave and millimeter-wave circuits, as… (More)
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