Laser-diode module, optical transceiver and fiber transmission system
AssigneeHitachi, Ltd.
InventorsTatemi Ido, Kenji Kogo, Kouji Yoshida
Life of this patent
Estimating the term…
Abstract
An LD module capable of generating a good optical waveform at a high speed of about 10 Gbit/s or higher in which a damping resistor is disposed in parallel with a laser-diode device in the inside of a laser-diode module, the damping resistor being preferably disposed between the connection point of the high-frequency transmission line and the terminating resistor, and the ground.
Claims20
A laser-diode module wherein at least a terminal for inputting an electric signal is provided to a package, a high-frequency transmission line, a first resistor and a laser-diode device are successively connected in series from the terminal for inputting an electric signal in the inside of the package, a first end of a second resistor is connected with one posiision in an electric circuit extending from the terminal for inputting an electric signal to the laser-diode device, and a second end of the second resistor is connected with the other end of the laser-diode device not connected with the first resistor.
An optical transceiver comprising:
- a plurality of terminals for inputting electric signals;
- a multiplexing unit for converting a plurality of electric signals inputted from the plurality of terminals for inputting electric signals into one multiplexed signals;
- an electro-optical conversion unit for converting obtained multiplexed signals into optical signals;
- and
- an optical fiber for emitting the electro-optically converted optical signals;
- wherein the electro-optical conversion unit uses an optical module in which at least a terminal for inputting an electric signal is provided to a package, a high-frequency transmission line, a first resistor and a laser-diode device are successively connected in series from the terminal for inputting an electric signal in the inside of the package, a first end of a second resistor is connected with one position in an electric circuit extending from the terminal for inputting an electric signal to the laser-diode device, and a second end of the second resistor is connected with the other end of the laser-diode device not connected with the first resistor.
A fiber transmission system using, as an optical transmission source, an optical module wherein at least a terminal for inputting an electric signal is provided to a package, a high-frequency transmission line, a first resistor and a laser-diode device are successively connected in series from the terminal for inputting an electric signal in the inside of the package, a first end of a second resistor is connected with one end in an electric circuit from the terminal for inputting an electric signal to the laser-diode device, and a second end of the second resistor is connected with the other end of the laser-diode device not connected with the first resistor.
Dependencies are inferred from the claim text.