Improved coupling efficiency using /spl Delta/n-controlled polymer waveguides with two-dimensional spot-size transformation

A new type of polymer waveguide for two-dimensional spot-size transformation is reported, with which coupling efficiency of waveguides with 4- and 8-μm core diameters was reduced by /spl ap/1.6 dB. The length needed for spot-size transformation was less than 1 mm along the direction of propagation....

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Veröffentlicht in:	IEEE photonics technology letters 2000-04, Vol.12 (4), p.404-406
Hauptverfasser:	Inaba, R., Kato, M., Akahoshi, H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Circuits Electron beams Electron optics Optical devices Optical losses Optical polymers Optical propagation Optical refraction Optical waveguides Polyimides
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