Photonics Research, Volume. 10, Issue 2, 364(2022)

Broadband adiabatic polarization rotator-splitter based on a lithium niobate on insulator platform: publisher’s note

Zhaoxi Chen1、†, Jingwei Yang1、†, Wing-Han Wong1, Edwin Yue-Bun Pun1,2, and Cheng Wang1,2、*
Author Affiliations
  • 1Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
  • 2State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong, China
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    This publisher’s note reports corrections to the text in Photon. Res.9, 2319 (2021).PRHEIZ2327-912510.1364/PRJ.432906

    The second paragraph in Section 2 of this article was corrected as follows.

    In the polarization rotator (Step I), the LN rib waveguide adiabatically widens from a top width of 1.2 to 3.6 μm via a linear taper, such that the effective index of the second-order TE (TE1) mode surpasses that of the fundamental TM (TM0) mode [Fig. 1(c)]. The partially etched structure breaks the vertical symmetry of the waveguide and enables a substantial avoided crossing between the two modes (Δneff=0.019) at a waveguide top width of 2.12 μm as shown in Fig. 1(c). As a result, the input TM0 mode is converted first to a hybridized mode between TM0 and TE1 [inset of Fig. 1(c)] and finally to the TE1 mode. While the input TM0 mode is rotated and converted into TE1 mode, the polarization state of the input TE0 mode remains unchanged during Step I, since it stays the highest-index mode throughout the tapered structure [blue curve in Fig. 1(c)].

    The text in bold was incorrect in the original published version, and the article was corrected online on 7 December 2021 [1].

    [1] Z. Chen, J. Yang, W.-H. Wong, E. Y.-B. Pun, C. Wang. Broadband adiabatic polarization rotator-splitter based on a lithium niobate on insulator platform. Photon. Res., 9, 2319-2324(2021).

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    Zhaoxi Chen, Jingwei Yang, Wing-Han Wong, Edwin Yue-Bun Pun, Cheng Wang. Broadband adiabatic polarization rotator-splitter based on a lithium niobate on insulator platform: publisher’s note[J]. Photonics Research, 2022, 10(2): 364

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    Paper Information

    Category: Errata

    Received: Dec. 17, 2021

    Accepted: --

    Published Online: Jan. 13, 2022

    The Author Email: Cheng Wang (cwang257@cityu.edu.hk)

    DOI:10.1364/PRJ.451711

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