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How to obtain a shortest mode converter based on periodic waveguide with limited index contrast?
Zhang, Lingxuan1,2,3; Zhang, Wenfu1,2,3; Wang, Guoxi1,2,3; Hu, Yaowei1; Ge, Zhiqiang1,2,3; Wang, Leiran1,2,3; Sun, Qibing1,2; Wang, Weiqiang1,2,3; Gong, Yongkang2,4; Zhao, Wei1,2,3; Zhang, Wenfu (wfuzhang@opt.ac.cn)
Department瞬态光学技术国家重点实验室
2017-05-01
Source PublicationAPPLIED PHYSICS B-LASERS AND OPTICS
ISSN0946-2171
Volume123Issue:4
Contribution Rank1
Abstract

Mode converter is one of most significant elements in photonic integrated circuits. It relies on increasing index contrast to shorten its length. However, index contrast is limited for technology. In addition, an overlarge index contrast leads to some disadvantages, such as large scattering loss, reflection loss, and small tolerance for manufacturing. Thus, an approximate scheme to design a mode converter is manipulating the transverse distribution of index to achieve the minimum length when the index contrast is given. We have analytically deduced the theoretical maximum coupled efficiency in periodic waveguide, which determines the minimum coupling length of mode converter. What is more, we have demonstrated how to construct a distribution function of indices in a cross section of waveguide to achieve the minimum length and a case is also given to illustrate the process. Proofs, based on both mathematic derivation and numerical simulation, have been exhibited in the paper.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s00340-017-6718-7
Indexed BySCI ; EI
WOS KeywordTAPERED DIRECTIONAL COUPLER ; PHOTONIC CRYSTALS ; ON-CHIP
Language英语
WOS Research AreaOptics ; Physics
Funding OrganizationNational Natural Science Foundation of China (NSFC)(61475188 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB 24030600) ; NSFC(61405243 ; New Star Team of Xi'an University of Post & Telecommunications ; 11404388) ; 61675231 ; 61635013)
WOS SubjectOptics ; Physics, Applied
WOS IDWOS:000402982600002
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/28811
Collection瞬态光学技术国家重点实验室
Corresponding AuthorZhang, Wenfu (wfuzhang@opt.ac.cn)
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
2.Chinese Acad Sci, XIOPM, China UK Joint Res Ctr Micro Nano Photon, Xian 710119, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ South Wales, Fac Adv Technol, Pontypridd CF37 1DL, M Glam, Wales
Recommended Citation
GB/T 7714
Zhang, Lingxuan,Zhang, Wenfu,Wang, Guoxi,et al. How to obtain a shortest mode converter based on periodic waveguide with limited index contrast?[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2017,123(4).
APA Zhang, Lingxuan.,Zhang, Wenfu.,Wang, Guoxi.,Hu, Yaowei.,Ge, Zhiqiang.,...&Zhang, Wenfu .(2017).How to obtain a shortest mode converter based on periodic waveguide with limited index contrast?.APPLIED PHYSICS B-LASERS AND OPTICS,123(4).
MLA Zhang, Lingxuan,et al."How to obtain a shortest mode converter based on periodic waveguide with limited index contrast?".APPLIED PHYSICS B-LASERS AND OPTICS 123.4(2017).
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