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Proceedings Paper

Design and analysis of wide-angle Y-branch waveguide with low losses for integrated optics
Author(s): Dong-Sun Min; Dietrich W. Langer; Dhruv K. Pant; Rob D. Coalson
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Paper Abstract

A new wide-angle, low-loss, symmetrical Y-branch waveguide is proposed. The waveguide configuration utilizes ribs for lateral confinement in the planar guiding region underneath. This Y-branch structure can be fabricated easily without any additional processes. Together with multi-mode interference effect, a local decrease of the waveguide ridge in a wedge at the Y-branch region reduces the radiation loss. When properly designed, the proposed Y-branch has a radiation loss as low as 2.2 dB at a branch angle of 6 degrees with index difference ((Delta) n/n) as small as 7.1 multiplied by 10-4 at a wavelength of 870 nm in the TE fundamental mode.

Paper Details

Date Published: 22 January 1997
PDF: 9 pages
Proc. SPIE 3006, Optoelectronic Integrated Circuits, (22 January 1997); doi: 10.1117/12.264242
Show Author Affiliations
Dong-Sun Min, Univ. of Pittsburgh (United States)
Dietrich W. Langer, Univ. of Pittsburgh (United States)
Dhruv K. Pant, Univ. of Pittsburgh (United States)
Rob D. Coalson, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 3006:
Optoelectronic Integrated Circuits
Yoon-Soo Park; Ramu V. Ramaswamy, Editor(s)

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