Back to results
US 2012/0235265 A1Published application
Light receiving element, light receiving device, and light receiving module
AssigneeFujitsu Limited
InventorKazumasa TAKABAYASHI
Life of this patent
Estimating the term…
Abstract
A light receiving element includes a core configured to propagate a signal light, a first semiconductor layer having a first conductivity type, the first semiconductor layer being configured to receive the signal light from the core along a first direction in which the core extends, an absorbing layer configured to absorb the signal light received by the first semiconductor layer, and a second semiconductor layer having a second conductivity type opposite to the first conductivity type.
Claims19
A light receiving element comprising:
- a core configured to propagate a signal light;
- a first semiconductor layer having a first conductivity type, the first semiconductor layer being configured to receive the signal light from the core along a first direction, the core extending in the first direction;
- an absorbing layer configured to absorb the signal light received by the first semiconductor layer;
- and
- a second semiconductor layer having a second conductivity type opposite to the first conductivity type.
2 more elements
A light receiving device comprising:
- a waveguide unit provided in a first region of the substrate, the waveguide unit including a plurality of waveguides configured to propagate a plurality of first lights;
- and
- a photo-detector unit provided in a second region of the substrate, the photo-detector unit including a plurality of light receiving elements configured to receive the plurality of first lights from the plurality of waveguides,
- wherein each of the plurality of waveguides includes:
- a core configured to propagate a corresponding one of the plurality of first lights, and
- wherein each of the plurality of light receiving elements includes:
- a first semiconductor layer having a first conductivity type, the first semiconductor layer being configured to receive a corresponding one of the plurality of first lights from a corresponding one of the plurality of cores along a first direction, the corresponding core extending in the first direction,
- an absorbing layer configured to absorb the corresponding first light received by the first semiconductor layer, and
- a second semiconductor layer having a second conductivity type opposite to the first conductivity type.
6 more elements
A light receiving device comprising:
- a first waveguide unit provided in a first region of a substrate, the first waveguide unit being configured to propagate a plurality of first lights;
- a second waveguide unit provided in a second region of the substrate, the second waveguide unit being configured to receive the plurality of first lights and generate a plurality of second lights on the basis of the plurality of first lights;
- a third waveguide unit provided in a third region of the substrate, the third waveguide unit including a plurality of waveguides configured to propagate the plurality of second lights;
- and
- a photo-detector unit provided in a fourth region of the substrate, the photo-detector unit including a plurality of light receiving elements configured to receive the plurality of second lights from the plurality of waveguides,
- wherein each of the plurality of waveguides includes
- a core configured to propagate a corresponding one of the plurality of second lights, and
- wherein each of the plurality of light receiving elements includes:
- a first semiconductor layer having a first conductivity type, the first semiconductor layer being configured to receive a corresponding one of the plurality of second lights from a corresponding one of the plurality of cores along a first direction, the corresponding core extending in the first direction,
- an absorbing layer configured to absorb the corresponding second light received by the first semiconductor layer, and
- a second semiconductor layer having a second conductivity type opposite to the first conductivity type.
8 more elements
A light receiving module comprising:
- a plurality of light receiving devices configured to receive a plurality of first lights, the plurality of light receiving devices being configured to detect the plurality of first lights and to output a plurality of electrical signals on the basis of the plurality of first lights;
- and
- a plurality of amplifiers configured to receive the plurality of electrical signals and to amplify the plurality of electrical signals,
- wherein each of the plurality of light receiving devices includes:
- a first waveguide unit provided in a first region of a substrate, the first waveguide unit being configured to propagate the plurality of first lights,
- a second waveguide unit provided in a second region of the substrate, the second waveguide unit being configured to receive the plurality of first lights and to generate a plurality of second lights on the basis of the plurality of first lights,
- a third waveguide unit provided in a third region of the substrate, the third waveguide unit including a plurality of waveguides configured to propagate the plurality of second lights, and
- a photo-detector unit provided in a fourth region of the substrate, the photo-detector unit including
- a plurality of light receiving elements configured to receive the plurality of second lights from the plurality of waveguides,
- wherein each of the plurality of waveguides includes:
- a core configured to propagate a corresponding one of the plurality of second lights, and
- wherein each of the plurality of light receiving elements includes
- a first semiconductor layer having a first conductivity type, the first semiconductor layer being configured to receive a corresponding one of the plurality of second lights from a corresponding one of the plurality of cores along a first direction, the corresponding core extending in the first direction,
- an absorbing layer configured to absorb the corresponding second light received by the first semiconductor layer, and
- a second semiconductor layer having a second conductivity type opposite to the first conductivity type.
12 more elements
Dependencies are inferred from the claim text.