Optical integrated device and optical module

• US 7,295,366 B2
• Filed: 06/21/2006
• Issued: 11/13/2007
• Est. Priority Date: 03/15/2006
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kuwatsuka, Haruhiko, Tanaka, Shinsuke, Morito, Ken
• Primary Examiner(s): Hughes; Deandra M
• Application Number:
  US11/471,586
• Publication Number:
  US 20070216996A1
• Time in Patent Office: 510 Days
• Field of Search: 359/344, 330/297
• US Class Current: 359/344
• CPC Class Codes: G02B 2006/12147 Coupler
• CPC Class Codes: H01S 5/02345 Wire-bonding
• CPC Class Codes: H01S 5/026 Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers stabilisation of output H01S5/06
• CPC Class Codes: H01S 5/0268 Integrated waveguide grating router, e.g. emission of a multi-wavelength laser array is combined by a "dragon router"
• CPC Class Codes: H01S 5/4025 Array arrangements, e.g. constituted by discrete laser diodes or laser bar H01S5/42 takes precedence
• CPC Class Codes: H01S 5/50 Amplifier structures not provided for in groups H01S5/02 - H01S5/30
• CPC Class Codes: H01S 5/5027 Concatenated amplifiers, i.e. amplifiers in series or cascaded

Abstract

An optical integrated device includes a plurality of input optical waveguides connected respectively to a plurality of input ports provided on one end face of the optical integrated device, a single output optical waveguide connected to an output port, an optical coupler for optically coupling signal lights propagated along the plural input optical waveguides to the single output optical waveguide, and a semiconductor optical amplifier gate array formed from a plurality of semiconductor optical amplifiers provided on the input optical waveguides, respectively, and each having an electrode on the surface thereof. The optical integrated device further includes a plurality of signal lines formed on the surface of the optical integrated device in such a manner as to extend from the electrodes to an end face of the optical integrated device on which none of the input ports and the output port is provided.

Claims

1. An optical integrated device, comprising:

a plurality of input optical waveguides connected respectively to a plurality of input ports provided on an end face of said optical integrated device;

a single output optical waveguide connected to an output port;

an optical coupler for optically coupling signal lights propagated along said plural input optical waveguides to said single output optical waveguide;

a semiconductor optical amplifier gate array formed from a plurality of semiconductor optical amplifiers provided on said input optical waveguides, respectively, and each having an electrode on the surface thereof; and

a plurality of signal lines formed on the surface of said optical integrated device in such a manner as to extend from said electrodes to a face of said optical integrated device on which none of said input ports and said output port is provided.

2. The optical integrated device as claimed in claim 1, wherein said output port is provided on an end face of said optical integrated device opposite to the end face on which said input ports are provided.

3. The optical integrated device as claimed in claim 1, wherein said output optical waveguide includes a curved waveguide,

said input ports and said output port being provided in such a manner as to line up in series along the end face,

wherein said signal lines have an equal length and the face of said optical integrated device on which none of said input ports and said output port is provided is opposite to the end face.

4. The optical integrated device as claimed in claim 1, further comprising a semiconductor optical amplifier provided on said output optical waveguide, for amplifying output signal light.

5. The optical integrated device as claimed in claim 2, further comprising a semiconductor optical amplifier provided on said output optical waveguide, for amplifying output signal light.

6. The optical integrated device as claimed in claim 3, further comprising a semiconductor optical amplifier provided on said output optical waveguide, for amplifying output signal light.

7. An optical module, comprising:

the optical integrated device as claimed in claim 1;

a lens array formed from a plurality of lenses; and

a wiring board having a plurality of wirings thereon;

said lens array being arranged at a position opposed to the end face of said optical integrated device such that said lenses are optically connected to said input ports, respectively;

said wiring board being arranged at a position opposed to the face of said optical integrated device on which none of said input ports and said output port is provided.

8. An optical module, comprising:

the optical integrated device as claimed in claim 2;

a lens array formed from a plurality of lenses; and

a wiring board having a plurality of wirings thereon;

said lens array being arranged at a position opposed to the end face of said optical integrated device such that said lenses are optically connected to said input ports, respectively;

said wiring board being arranged at a position opposed to the face of said optical integrated device on which none of said input ports and said output port is provided.

9. An optical module, comprising:

the optical integrated device as claimed in claim 4;

a lens array formed from a plurality of lenses; and

a wiring board having a plurality of wirings thereon;

said lens array being arranged at a position opposed to the end face of said optical integrated device such that said lenses are optically connected to said input ports, respectively;

said wiring board being arranged at a position opposed to the face of said optical integrated device on which none of said input ports and said output port is provided.

10. An optical module, comprising:

the optical integrated device as claimed in claim 3;

a lens array formed from a plurality of lenses; and

a wiring board having a plurality of wirings thereon;

said lens array being arranged at a position opposed to the end face of said optical integrated device such that one of said lenses which form said lens array is optically connected to said single output port and the lenses other than the one lens are optically connected to said input ports, respectively;

said wiring board being arranged at a position opposed to a face of said optical integrated device opposite to the end face.

11. An optical module, comprising:

the optical integrated device as claimed in claim 6;

a lens array formed from a plurality of lenses; and

a wiring board having a plurality of wirings thereon;

said lens array being arranged at a position opposed to the end face of said optical integrated device such that one of said lenses which form said lens array is optically connected to said single output port and the lenses other than the one lens are optically connected to said input ports, respectively;

said wiring board being arranged at a position opposed to a face of said optical integrated device opposite to the end face.