Optical pulse generator, semiconductor laser module, and semiconductor laser drive apparatus
AssigneeAdvantest Corporation
InventorShin Masuda
Life of this patent
Estimating the term…
Abstract
Provided are: an RF signal generator 110 which generates and outputs an RF signal having a signal waveform in which the potential of the signal changes to be alternately positive and negative with respect to a reference potential; a semiconductor laser 140 which receives, at its one end, a drive current which is based on the signal output from the RF signal generator 110; and a rectifier 150 which receives the drive current at its one end which has a polar directivity opposite to that of the one end of the semiconductor laser 140, with the other end of the semiconductor laser 140 and the other end of the rectifier 150 connected to a common potential.
Claims8
An optical pulse generator, comprising:
- an RF signal generator which generates and outputs an RF signal having a signal waveform in which potential of the signal changes to be positive and negative with respect to a reference potential;
- a semiconductor laser which receives, at its one end, a drive current which is based on the signal output from the RF signal generator;
- and
- a rectifying element which receives the drive current at its one end that has a polar directivity opposite to that of the one end of the semiconductor laser,
- wherein the other end of the semiconductor laser and the other end of the rectifying element are connected to a common potential.
A semiconductor laser module that is supplied with a drive current from an RF signal generator which generates and outputs an RF signal having a signal waveform in which potential of the signal changes to be positive and negative with respect to a reference potential, the semiconductor laser module comprising:
- a semiconductor laser which receives, at its one end, a drive current which is based on the RF signal;
- and
- a rectifying element which receives the drive current at its one end which has a polar directivity opposite to that of the one end of the semiconductor laser,
- wherein the other end of the semiconductor laser and the other end of the rectifying element are connected to a common potential.
A semiconductor laser drive apparatus, comprising:
- an RF signal generator which generates and outputs an RF signal having a signal waveform in which potential of the signal changes to be positive and negative with respect to a reference potential;
- and
- a rectifying element which receives, at its one end, a drive current which is based on the signal output from the RF signal generator,
- wherein the semiconductor laser drive apparatus drives a semiconductor laser which receives the drive current at its one end having a polar directivity opposite to that of the one end of the rectifying element, and which has its other end connected to a potential common to the other end of the rectifying element.
Dependencies are inferred from the claim text.