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US 12,710,584 B2Granted
Optical device, optical transmitter device, and optical receiver device
AssigneeFujitsu Optical Components Limited
InventorsTatsuya Ito, Akira Oka
Life of this patent
Estimating the term…
Abstract
An optical device includes a core formed on a substrate, a cladding layer covering the core, and a passivation layer formed on the cladding layer. The optical device includes a spot size converter that causes an increase in spot size of a light, which is guided through the core, toward end portion of the substrate. The passivation layer has a higher material refractive index than the cladding layer, and is formed in region excluding at least upper portion of the spot size converter.
Claims12
An optical device comprising
- a core formed on a substrate,
- a cladding layer covering the core,
- a passivation layer formed on the cladding layer, and
- a spot size converter that causes an increase in spot size of a light, which is guided through the core, toward end portion of the substrate, wherein
- the passivation layer
- includes an opening that exposes at least an upper portion of the cladding layer of the spot size converter so as to reduce a light loss attributed to a transition of light from the core of the spot size converter to the passivation layer,
- has a higher material refractive index than the cladding layer, and
- is formed in a region excluding the opening formed on at least an upper portion of the spot size converter, and
- on the cladding layer that is exposed from the opening formed on the passivation layer, the core of the spot size converter and a core of an optical fiber are optically coupled using an adhesive agent.
6 more elements
An optical transmitter device comprising:
- a processor that performs signal processing with respect to an electrical signal;
- a light source that generates a light;
- and
- an optical transmitter that modulates the light, which is generated by the light source, using the electrical signal output from the processor, wherein
- an optical device installed in the optical transmitter device includes:
- a core formed on a substrate,
- a cladding layer covering the core,
- a passivation layer formed on the cladding layer, and
- a spot size converter that causes an increase in spot size of a light, which is guided through the core, toward end portion of the substrate, and
- the passivation layer
- includes an opening that exposes at least an upper portion of the cladding layer of the spot size converter so as to reduce a light loss attributed to a transition of light from the core of the spot size converter to the passivation layer,
- has a higher material refractive index than the cladding layer, and
- is formed in a region excluding the opening formed on at least an upper portion of the spot size converter, and
- on the cladding layer that is exposed from the opening formed on the passivation layer, the core of the spot size converter and a core of an optical fiber are optically coupled using an adhesive agent.
11 more elements
An optical receiver device comprising:
- a light source that generates a light;
- and
- an optical receiver that demodulates received light using the light coming from the light source, wherein
- an optical device installed in the optical receiver device includes:
- a core formed on a substrate,
- a cladding layer covering the core,
- a passivation layer formed on the cladding layer, and
- a spot size converter that causes an increase in spot size of a light, which is guided through the core, toward end portion of the substrate, and
- the passivation layer
- includes an opening that exposes at least an upper portion of the cladding layer of the spot size converter so as to reduce a light loss attributed to a transition of light from the core of the spot size converter to the passivation layer,
- has a higher material refractive index than the cladding layer, and
- is formed in a region excluding the opening formed on at least an upper portion of the spot size converter, and
- on the cladding layer that is exposed from the opening formed on the passivation layer, the core of the spot size converter and a core of an optical fiber are optically coupled using an adhesive agent.
10 more elements
Dependencies are inferred from the claim text.