Abstract
AbstractSilica taper incorporated polymer micro or nanofibers have been fabricated by direct drawing. This method could provide stable and high‐optical‐coupling efficiency. The as‐fabricated polymethyl methacrylate (PMMA) fibers not only show low‐optical losses, but also offer good flexibility, making them promising elements for sharp‐bending waveguides and ring resonators. A low‐loss microcoupler has been assembled with two 860‐nm‐diameter PMMA fibers and a polymeric knot resonator with a loaded Q‐factor of about 3000 has been assembled using a 3‐μm‐diameter PMMA microfiber. Thermostability of the PMMA fibers has also been investigated. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
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