Author(s): Sun, X (Sun, Xiao); Ye, SW (Ye, Shengwei); Cheng, WQ (Cheng, Weiqing); Liang, S (Liang, Song); Huang, YG (Huang, Yongguang); Qiu, BC (Qiu, Bocang); Li, ZB (Li, Zhibo); Xiong, JC (Xiong, Jichuan); Liu, XF (Liu, Xuefeng); Marsh, JH (Marsh, John H.); Hou, LP (Hou, Lianping)

Source: IEEE PHOTONICS JOURNAL Volume: 14 Issue: 3 Article Number: 6632606 DOI: 10.1109/JPHOT.2022.3176547 Published: JUN 2022

Abstract: An AlGaInAs multiple-quantum-well (MQW) polarization mode controller (PMC) using a stepped height ridge waveguide is presented, which is monolithically integrated with a sidewall grating distributed feedback laser using quantum well intermixing (QWI). QWI is used to create a 100 nm blueshift in the PMC and to partially eliminate the anisotropy and birefringence of the MQW structure. The PMC structure is modelled and optimized using a 3D full-vectorial Finite-Element Method package. The maximum polarization conversion efficiency (PCE) is around 96% for a 537-mu m-long PMC operating at a wavelength of 1550 nm. To maintain a PCE of >= 90%, the fabrication tolerances of the dry-etch corner and ridge waveguide widths are +/- 0.05 mu m and +/- 0.03 mu m respectively. The main advantages of the proposed design are that only a single step of MOPVE and two steps of dry etching are required for the whole integrated device, significantly reducing complexity and cost.

Accession Number: WOS:000808067200008

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Xiong, Jichuan                  0000-0002-7051-802X

ISSN: 1943-0655

eISSN: 1943-0647

Full Text: https://ieeexplore.ieee.org/document/9779477