论文标题
与侧壁光栅DFB激光集成的无重生算法MQW极化控制器
Regrowth-free AlGaInAs MQW polarization controller integrated with sidewall grating DFB laser
论文作者
论文摘要
我们报告了由偏振模式转换器PMC，差分相变（DPS）和侧壁光栅分布式反馈DFB激光组成的极化控制光的多个量子良好整合的源。我们展示了一个不对称的步进山脊波导PMC，以实现TE到TM极化转换和对称的直波导DPS，以实现从大约逆时针循环圆极化到线性极化的极化旋转。基于相同的外延层方案，所有PMC，DPS和DFB激光器都只能单层整合，仅使用一步的金属蒸气相和III V材料干燥蚀刻的两个步骤。对于DFB-PMC设备，在1555 nm波长下，在广泛的DFB注入电流中，高为TM到TM极化转换效率为98％。对于DFB-PMC-DPS设备，在IDFB时从0 V到-4.0 V的Poincaré球上获得了STOKES向量的60度旋转，为170 mA。
We report an AlGaInAs multiple quantum well integrated source of polarization controlled light consisting of a polarization mode converter PMC, differential phase shifter(DPS), and a side wall grating distributed-feedback DFB laser. We demonstrate an asymmetrical stepped-height ridge waveguide PMC to realize TE to TM polarization conversion and a symmetrical straight waveguide DPS to enable polarization rotation from approximately counterclockwise circular polarization to linear polarization. Based on the identical epitaxial layer scheme, all of the PMC, DPS, and DFB laser can be integrated monolithically using only a single step of metalorganic vapor phase epitaxy and two steps of III V material dry etching. For the DFB-PMC device, a high TE to TM polarization conversion efficiency 98% over a wide range of DFB injection currents is reported at 1555 nm wavelength. For the DFB-PMC-DPS device, a 60 degree rotation of the Stokes vector was obtained on the Poincaré sphere with a range of bias voltage from 0 V to -4.0 V at IDFB is 170 mA.
