| 摘要 |
A spot-size converter integrated optical device and method for manufacturing the same readily fabricates and optimizes a laser and a spot-size converter region. The optical device includes: a first waveguide; and a second waveguide basically having a planar buried-heterostructure active layer and a spot-size converter region of ridge form where optical mode expands for better power coupling to an optical fiber, wherein the spot-size converter region is formed by tapering the width of the active layer.
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