Low-loss highly overcoupled fused couplers: fabrication and sensitivity to external pressure

A flame brush technique for fabrication of optical directional couplers that maintain low loss over many coupling cycles is discussed. Couplers with excess losses less than 3% and with 2500 power transfer cycles in the coupling are reported. Such couplers, which have a narrow wavelength band transmi...

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Bibliographic Details
Published inJournal of lightwave technology Vol. 6; no. 10; pp. 1476 - 1482
Main Authors Bilodeau, F., Hill, K.O., Faucher, S., Johnson, D.C.
Format Journal Article
LanguageEnglish
Published IEEE 01.10.1988
Subjects
Directional couplers
Fires
Optical coupling
Optical device fabrication
Optical fiber couplers
Optical fiber sensors
Optical losses
Optical refraction
Optical sensors
Optical waveguides
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Summary:A flame brush technique for fabrication of optical directional couplers that maintain low loss over many coupling cycles is discussed. Couplers with excess losses less than 3% and with 2500 power transfer cycles in the coupling are reported. Such couplers, which have a narrow wavelength band transmission (0.12 nm), can be tuned by applying an external hydrostatic pressure. The long fused couplers can also have application as optical fiber sensors.< >
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ISSN:0733-8724
1558-2213
DOI:10.1109/50.7904