16 X 16 Optical Star Coupler Using A Mixing Block With Two Perfect Mirrors

K. Umeki; T. Aoyama; F. Matsumura; K. Doi

doi:10.1117/12.933339

15 October 1982 16 X 16 Optical Star Coupler Using A Mixing Block With Two Perfect Mirrors

K. Umeki, T. Aoyama, F. Matsumura, K. Doi

Proceedings Volume 0326, Fiber Optics: Technology '82; (1982) https://doi.org/10.1117/12.933339
Event: 1982 Los Angeles Technical Symposium, 1982, Los Angeles, United States

Abstract

μA multiport branching coupler is called a star coupler. It is a passive device which is foreseen to have an extensive application. For example, it will be used for an optical fiber data bus system. A 16x16 (16 input ports and 16 output ports) star coupler was fabricated. The star coupler consists of an input fiber array and output fiber array with 16 pigtail fibers, a recutangular glass black with two perfect mirrors for mixing the input light beams uniformly and two cylindrical lenses. The glass block shape parameters were decided so as it minimize output power deviation. The star coupler characteristics are as follow, when step index fiber is 100 μm core diameter, 150 μm outer diameter and 0.25 NA (numerical aperture) Average transmission loss : 15.4 dB Average excess lass : 3.4 dB Branching power deviation : 2.0 dB The results indicate that the new star coupler is very useful for an extensive application in fiber optics data transmission.

Citation Download Citation

K. Umeki, T. Aoyama, F. Matsumura, and K. Doi "16 X 16 Optical Star Coupler Using A Mixing Block With Two Perfect Mirrors", Proc. SPIE 0326, Fiber Optics: Technology '82, (15 October 1982); https://doi.org/10.1117/12.933339

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