Optical power splitter with assistance waveguide

Details Optical power splitter with assistance waveguide Optical power splitter with assistance waveguide

2005-06-07

2005-06-07

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S045000

Reexamination Certificate

active

06904208

ABSTRACT:
Disclosed is an optical power splitter that maximizes uniformity of the power split ratio, while minimizing the output differences between channels. The optical power splitter includes a semiconductor substrate; a core layered on the semiconductor substrate, functioning as a transmission medium for optical signals composed of multi-channels according to a wavelength, wherein the core comprises an input waveguide for receiving the optical signals and a plurality of output waveguides for outputting respective portions of the optical signals whose powers are split; a clad for encompassing the core; and a rectilinear assistant waveguide coupled between the input waveguide and a plurality of output waveguides, having a designated width and length to uniformize mode profiles of the multi-channels that are manifested on the output side edge of the rectilinear assistant waveguide.

REFERENCES:
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patent: 6714704 (2004-03-01), Lin et al.
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“Length Requirements for Power Splitters in Optical Communication Systems;” T. Rasmussen et al.; Electronic Letters, vol. 30, No. 7; Mar. 31, 1994; XP006000370; 2 pages.
“A Low-Loss Y-Branch With a Multimode Waveguide Transition Section;” Quian Wang et al.; IEEE Photonics Technology Letters, vol. 14, No. 8: Aug. 2002; XP001132226; 3 pages.
“Compact 1 × 16 Power Splitter Based on Symmetrical 1 × 2 MMI Splitters;” M. Bouda et al.; Electronics Letters, vol. 30, No. 21; Oct. 31, 1994; XP006001221; 3 pages.

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