Single mode fused couplers insensitive to external refractive index

Fielding, A.; Bricheno, T.

doi:10.1049/el:19880579

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…The powercoupling principle for multimode fiber couplers has been studied elsewhere. [5][6][7][8][9] Even though the dependence of coupler performance on the refractive index of the material external to the tapered region has been investigated extensively for single-mode couplers, [10][11][12][13][14] little attention regarding this effect has been given to multimode fiber couplers, but it is equally important to coupler design, packaging, and environmental stability.…”

Section: Introductionmentioning

confidence: 99%

Effect of external index of refraction on multimode fiber couplers

1995

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The dependence of the performance of fused-taper multimode fiber couplers on the refractive index of the material surrounding the taper region has been investigated both theoretically and experimentally. It has been identified that for a 2 3 2 multimode fiber coupler there is a range of output-power-coupling ratios for which the effect of the external refractive index is negligible. When the coupler is tapered beyond this region, the performance becomes dependent on the external index of refraction and lossy. To analyze the multimode coupler-loss mechanism, we develop a two-dimensional ray-optics model that incorporates trapped cladding-mode loss and core-mode loss through frustrated total internal reflection.Computer-simulation results support the experimental observations. Related issues such as coupler fabrication and packaging are also discussed. r

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Section: Introductionmentioning

confidence: 99%

Effect of external index of refraction on multimode fiber couplers

1995

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Small-scale integration of fused tapers

Miles

1991

Fiber and Integrated Optics

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The Small-Scale Integration (SSI) of fused couplers is proposed. The idea is to make several couplers on a single continuous piece of fiber rather than making discrete couplers and then splicing them together. Rudimentary tooling was set up to fabricate the couplers. Nine devices were successfully integrated onto a single fiber. In addition, a theory offused tapers was developed. The fabrication parameters are analytically related to fiber geometry, which in turn, is related to the optical pe$ormance of the device.

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Single mode fused couplers insensitive to external refractive index

Cited by 2 publications

References 2 publications

Effect of external index of refraction on multimode fiber couplers

Effect of external index of refraction on multimode fiber couplers

Small-scale integration of fused tapers

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