Continuous metal/glass fibre polarisers incorporating Ga or In/Sn alloy have been fabricated. An extinction ratio of greater than 37 dB with an insertion loss of less than 1 dB can be obtained over a 250 nm spectral window around 1300 nm. Extinction ratios as high as 52 dB have been measured at 830 nm.
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Li et al. (1986) studied this question.
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