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Multimode polymeric waveguide devices with PMMA substrates, large core (0.25–2 mm2) styrene/acrylonitril copolymer waveguides and PMMA superstrates have been fabricated by injection moulding. Waveguide losses of 0.15–0.3 dB/cm have been measured in the 600–1100 nm wavelength range. The stability of the devices has been tested by temperature cycling between –40°C and +75°C.
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Fischer et al. (1997) studied this question.
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