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OPTICAL SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING OPTICAL SEMICONDUCTOR DEVICE

  • US 20130202248A1
  • Filed: 12/06/2012
  • Published: 08/08/2013
  • Est. Priority Date: 02/08/2012
  • Status: Active Grant
First Claim
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1. An optical semiconductor device comprising:

  • a waveguide unit which is formed on a semiconductor substrate having a (100) plane and includes a core layer which propagates light;

    a spot size converting unit which is formed on the semiconductor substrate, is optically connected to the waveguide unit, and converts diameter of light propagated; and

    a pair of terraces which are formed on the semiconductor substrate and opposed to each other while sandwiching the spot size converting unit,wherein interval between opposed units which are opposed to each other while sandwiching the spot size converting unit in the pair of terraces changes, and each of the opposed units includes a part whose orientation tilts to a [0-11] direction with respect to a [011] direction, andposition of an upper end of the spot size converting unit is higher than position of an upper end of the waveguide unit.

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