Optical dispersion compensator, optical transmission apparatus, optical transmission system, and method thereof
AssigneeFujitsu Limited
InventorHiroshi OGIWARA
Life of this patent
Estimating the term…
Abstract
An optical dispersion compensator including a first optical device in which light inputted from a first port is outputted from a second port and light inputted from the second port is outputted from a third port, an optical filter type dispersion compensation device that receives light from the second port of the first optical device and compensates wavelength dispersion with respect to the received light, and a second optical device that includes a fourth port to which light is inputted from the optical filter type dispersion compensation device, and in which the light inputted from the fourth port is outputted from a fifth port and light inputted from a sixth port is outputted from the fourth port.
Claims17
An optical dispersion compensator, comprising:
- a first optical device in which light inputted from a first port is outputted from a second port and light inputted from the second port is outputted from a third port;
- an optical filter type dispersion compensation device that receives light from the second port of the first optical device and compensates wavelength dispersion with respect to the received light;
- and
- a second optical device that includes a fourth port to which light is inputted from the optical filter type dispersion compensation device, and in which the light inputted from the fourth port is outputted from a fifth port and light inputted from a sixth port is outputted from the fourth port.
An optical transmission apparatus, comprising:
- a first optical device in which light inputted from a first port is outputted from a second port and light inputted from the second port is outputted from a third port;
- an optical filter type dispersion compensation device that receives light from the second port of the first optical device and compensates wavelength dispersion with respect to the received light;
- a second optical device that includes a fourth port to which light is inputted from the optical filter type dispersion compensation device, and in which the light inputted from the fourth port is outputted from a fifth port and light inputted from a sixth port is outputted from the fourth port;
- an optical sender that outputs light to the first port of the first optical device;
- and
- an optical receiver that receives light from the third port of the first optical device.
An optical transmission system, comprising:
- a first optical transmission apparatus that outputs light;
- a second optical transmission apparatus that outputs light having a wavelength that is the same as a wavelength of the light outputted from the first optical transmission apparatus;
- a first optical transmission line that transmits the light outputted from the first optical transmission apparatus, to the second optical transmission apparatus;
- and
- a second optical transmission line that transmits the light outputted from the second optical transmission apparatus, to the first optical transmission apparatus, and
- wherein the first optical transmission apparatus or the second optical transmission apparatus, or each of the first optical transmission apparatus and the second optical transmission apparatus includes:
- a first optical device in which light inputted from a first port is outputted from a second port and light inputted from the second port is outputted from a third port;
- an optical filter type dispersion compensation device that receives light from the second port of the first optical device and compensates wavelength dispersion with respect to the received light;
- a second optical device that includes a fourth port to which light is inputted from the optical filter type dispersion compensation device, and in which the light inputted from the fourth port is outputted from a fifth port and light inputted from a sixth port is outputted from the fourth port;
- an optical sender that outputs light to the first port of the first optical device;
- and
- an optical receiver that receives light from the third port of the first optical device.
A method of controlling an optical compensator, comprising:
- determining a wavelength dispersion with respect to a light in an upstream direction and a light in a downstream direction;
- and
- compensating the wavelength dispersion with respect to the upstream direction and the downstream direction by a single optical dispersion compensator.
Dependencies are inferred from the claim text.