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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 16, Iss. 4 — Apr. 1, 1998
  • pp: 620–

Two-Dimensional Mode Size Transformation by \Delta n-Controlled Polymer Waveguides

Ryoji Inaba, Miwa Kato, Masakazu Sagawa, and Haruo Akahoshi

Journal of Lightwave Technology, Vol. 16, Issue 4, pp. 620- (1998)


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Abstract

We report a new type of polymer waveguide for two-dimensional (2-D) mode size transformation in which \Delta n (refractive index difference between core and cladding) is properly controlled along the waveguide axis while the core cross section is kept uniform. The beam diameter in the \Delta n-controlled waveguide where the core diameter is 3.7 \mum and \Delta n changes from 0.0027 to 0.0009 toward one end in the 5 mm-gradient \Delta n region, is about twice as large as that in a normal waveguide where \Delta n is 0.0027. The optical loss accompanied by mode size transformation is calculated to be less than 2.5% based on beam propagation methods (BPM's).

[IEEE ]

Citation
Ryoji Inaba, Miwa Kato, Masakazu Sagawa, and Haruo Akahoshi, "Two-Dimensional Mode Size Transformation by \Delta n-Controlled Polymer Waveguides," J. Lightwave Technol. 16, 620- (1998)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-16-4-620

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