Spot size converter, optical transmitter, optical receiver, optical transceiver, and method of manufacturing spot size converter
AssigneesNEC Corporation, Fujitsu Limited
InventorsNobuaki HATORI, Masashige ISHIZAKA, Takanori SHIMIZU
Life of this patent
Estimating the term…
Abstract
The spot size converter includes a first cladding layer, a first core layer and a second core layer arranged side by side on the first cladding layer so as to extend from a first end which receives/outputs light along a direction from the first end toward a second end, a third core layer which is disposed on the first cladding layer between the first and second core layers, is a member different from the first and second core layers, and extends to the second end along the direction from the first end toward the second end, and a second cladding layer disposed on the first, second, and third core layers.
Claims11
A spot size converter comprising:
- a first cladding layer;
- a first core layer and a second core layer arranged side by side on the first cladding layer so as to extend from a first end which receives/outputs light along a direction from the first end toward a second end;
- a third core layer which is disposed on the first cladding layer between the first and second core layers, is a member different from the first and second core layers, and extends to the second end along the direction from the first end toward the second end;
- and
- a second cladding layer disposed on the first, second, and third core layers.
An optical transmitter comprising:
- a substrate;
- a spot size conversion unit including
- a first cladding layer disposed on the substrate,
- a first core layer and a second core layer arranged side by side on the first cladding layer so as to extend from a first end which receives light along a direction from the first end toward a second end which outputs light,
- a third core layer which is disposed on the first cladding layer between the first and second core layers, is a member different from the first and second core layers, and extends to the second end along the direction from the first end toward the second end, and
- a second cladding layer disposed on the first, second, and third core layers;
- and
- a light generator disposed on the substrate and outputting light to the first end.
A method of manufacturing a spot size converter, comprising:
- forming a first core layer and a second core layer arranged side by side on a first cladding layer so as to extend from a first end along a direction from the first end toward a second end;
- forming a third core layer which is disposed on the first cladding layer between the first and second core layers, is a member different from the first and second core layers, and extends to the second end along the direction from the first end toward the second end;
- and
- forming a second cladding layer disposed on the first, second, and third core layers.
Dependencies are inferred from the claim text.