Design and analysis of wide-angle Y-branch waveguide with low losses for integrated optics

Dong-Sun Min; Dietrich W. Langer; Dhruv K. Pant; Rob D. Coalson

doi:10.1117/12.264242

22 January 1997 Design and analysis of wide-angle Y-branch waveguide with low losses for integrated optics

Dong-Sun Min, Dietrich W. Langer, Dhruv K. Pant, Rob D. Coalson

Proceedings Volume 3006, Optoelectronic Integrated Circuits; (1997) https://doi.org/10.1117/12.264242
Event: Photonics West '97, 1997, San Jose, CA, United States

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.

Citation Download Citation

Dong-Sun Min, Dietrich W. Langer, Dhruv K. Pant, and Rob D. Coalson "Design and analysis of wide-angle Y-branch waveguide with low losses for integrated optics", Proc. SPIE 3006, Optoelectronic Integrated Circuits, (22 January 1997); https://doi.org/10.1117/12.264242

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