Coupling arrangements between a light-emitting diode and an optical fiber waveguide and between an optical fiber waveguide and a semiconductor optical detector
AssigneeBell Telephone Laboratories, Incorporated
InventorsStewart E. Miller, Kinichiro Ogawa
Life of this patent
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Abstract
A terminating portion of an optical fiber waveguide having a polished beveled end is laterally disposed directly on the light-emitting surface of a light-emitting diode (LED). The light power coupled into the fiber consists of two components: the light power directly coupled into the fiber all along the region of contact between the fiber and the light-emitting surface; and the light power reflected by the beveled end and directed along the fiber axis.
Claims31
In combination, a semiconductor optical source having a light-emitting surface, an optical fiber waveguide having a central axis, a terminating portion of said fiber waveguide being affixed to said surface such that the axis of said terminating portion is substantially parallel to said surface so that a portion of the light power radiated from said surface is directly refracted into said optical fiber waveguide, and means at the end of said terminating portion for reflecting another portion of the light power radiated from said surface into said optical fiber waveguide.
In combination, a semiconductor optical source having a light-emitting surface, receptacle means attached to said semiconductor optical source forming a tubular region between said means and said source having a central axis substantially parallel to said light-emitting surface, said receptacle means having two ends, a first end being adapted to receive a terminating end of an optical fiber waveguide, and the second end including means for reflecting light power radiated from said surface towards said first end.
In combination, a semiconductor optical detector having a detecting surface, an optical fiber waveguide having a central axis, a terminating portion of said fiber waveguide being affixed to said surface such that the axis of said terminating portion is substantially parallel to said surface so that a portion of the light power transmitted in said optical fiber waveguide is directly refracted into said detecting surface, and means at the end of said terminating portion for reflecting another portion of the light power from said optical fiber waveguide into said detecting surface.
In combination, a semiconductor optical detector having a light-detecting surface, receptacle means attached to said semiconductor optical detector forming a tubular region between said means and said detector having a central axis substantially parallel to said light-detecting surface, said receptacle means having two ends, a first end being adapted to receive a terminating end of an optical fiber waveguide, and the second end including means for reflecting light power radiated from said first end into said surface.
Dependencies are inferred from the claim text.