Maximum-performance fiber-optic irradiation with nonimaging designs

Yueping Fang, Daniel Feuermann,, J. Gordon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


A range of practical nonimaging designs for optical fiber applications is presented. Rays emerging from a fiber over a restricted angular range (small numerical aperture) are needed to illuminate a small near-field detector at maximum radiative efficiency. These designs range from pure reflector (all-mirror), to pure dielectric (refractive and based on total internal reflection) to lens–mirror combinations. Sample designs are shown for a specific infrared fiber-optic irradiation problem of practical interest. Optical performance is checked with computer three-dimensional ray tracing. Compared with conventional imaging solutions, nonimaging units offer considerable practical advantages in compactness and ease of alignment as well as noticeably superior radiative efficiency.
Original languageEnglish
Pages (from-to)7107-7113
Number of pages7
JournalApplied Optics
Issue number28
Publication statusPublished - 1 Oct 1997
Externally publishedYes


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