VCSELs with a high-index-contrast grating for mode-division multiplexing

Qijiang Ran, Jesper Mørk

Research output: Contribution to journalConference articleResearchpeer-review


A novel vertical-cavity surface-emitting laser (VCSEL) structure for space division multiplexing (SDM) is proposed and numerically investigated. This laser structure employs a high-index-contrast grating (HCG) as a light-emitting mirror. The reflectivity of the HCG mirror is spatially modulated to excite a specific transverse mode, while its transmission phase is kept spatially constant. This laser can provide the selective excitation of a specific transverse mode, leading to a high coupling efficiency to a few mode fiber. Compared to the phase plate approach in current SDM systems, the HCG-integrated VCSEL approach can be a much more compact and cheaper alternative.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Pages (from-to)863309
Number of pages7
Publication statusPublished - 2013
EventSPIE Photonics West : High Contrast Metastructures II - The Moscone Center, San Francisco, California, United States
Duration: 5 Feb 20137 Feb 2013


ConferenceSPIE Photonics West : High Contrast Metastructures II
LocationThe Moscone Center
CountryUnited States
CitySan Francisco, California


  • HCG
  • Selective mode excitation
  • LP11
  • MDM

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