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Optica Publishing Group
  • Optical Fiber Communication Conference
  • 1996 OSA Technical Digest Series (Optica Publishing Group, 1996),
  • paper ThK2

Wavelength-insensitive single-mode fused tapered 1 × N couplers

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Abstract

The popularity of the fused tapered 1×2 coupler can be attributed to its excellent optical characteristics, low assembly cost, and environmental stability. Couplers with larger numbers of output ports can be assembled by concatenating 1×2 couplers. However, the process becomes increasingly complex as the number of subcomponents (couplers and splices) increases. Fused tapered couplers with more than two output ports have been reported using an over-cladding capillary tube.1 Figure 1(a) shows a schematic cross-section of such a coupler. These devices have not found widespread application presumably because of difficulties in inserting the fibers into a small bore tube, or in collapsing a large bore tube around the fibers.

© 1996 Optical Society of America

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