Large wavelength shifts in UV-exposed 3 dB and WDM fused taperfibre couplers |
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Authors: | Ashby S.J. Charters R.B. Love J.D. Ladouceur F. Elias M.C. |
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Affiliation: | Sch. of Phys. Scis. & Eng., Australian Nat. Univ., Canberra, ACT; |
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Abstract: | The spectral response of 3 dB and 1300/1550 nm wavelength division multiplexing fused taper fibre couplers can be shifted by over 100 nm by exposing the entire coupler with intense UV light at a wavelength of 193 nm and without prior hydrogenation. There is no discernable increase in excess loss. The major contribution to these shifts for these couplers originates in the down- and up-taper regions |
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