Design and fabrication of microlens array for VCSEL to fiber coupling; Technical Digest

Seok Min Kim, Hongmin Kim, Jiseok Lim, Jeongwon Han, Shinill Kang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The microlens array is often used for increasing coupling efficiency in vertical cavity surface emitting lasers (VCSELs) to fiber coupling system. Among the various methods to couple VCSEL module with microlenses, a monolithic lithography integration is regarded as better candidate because the process is simple and suitable for mass production. In addition, one can avoid additional assembly process. In the present study, a microlens array with a lens diameter of 40mm and focal length of 150mm was designed to couple a single mode VCSEL array and optical fibers, and tolerance analysis was carried out. A microlens array for VCSEL to fiber coupling was integrated by a UV-transparent mold and a monolithic lithography integration system which utilizes micro UV-molding. Finally, the geometrical properties of the integrated microlens array and the insertion loss of VCSEL to fiber coupling was measured and analyzed.

Original languageEnglish
Title of host publicationOptifab 2005
Subtitle of host publicationTechnical Digest
Number of pages4
ISBN (Electronic)0819458252
Publication statusPublished - 2005
EventOptifab 2005: Technical Digest - Rochester, United States
Duration: 2005 May 22005 May 5

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherOptifab 2005: Technical Digest
Country/TerritoryUnited States

Bibliographical note

Funding Information:
This research was supported Laboratory program.

Publisher Copyright:

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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