18228751. OPTICAL TRANSMITTER AND BIAS CONTROL METHOD simplified abstract (Fujitsu Limited)
Contents
OPTICAL TRANSMITTER AND BIAS CONTROL METHOD
Organization Name
Inventor(s)
Hideyuki Matsuura of Sendai (JP)
Kosuke Komaki of Kawasaki (JP)
Hidetoshi Sato of Kawasaki (JP)
Katsutoshi Ishidou of Tooda (JP)
OPTICAL TRANSMITTER AND BIAS CONTROL METHOD - A simplified explanation of the abstract
This abstract first appeared for US patent application 18228751 titled 'OPTICAL TRANSMITTER AND BIAS CONTROL METHOD
Simplified Explanation
The patent application describes an optical transmitter with an optical modulator of a Mach-Zehnder type using an InP-based material, a bias controller to control the DC bias applied to the modulator, a monitor to generate a monitor signal by monitoring the output light, and a corrector to adjust the gain of the monitor signal to compensate for wavelength dependency of insertion loss.
- Optical transmitter components:
- Optical modulator of a Mach-Zehnder type using InP-based material - Bias controller to control DC bias - Monitor to generate monitor signal by monitoring output light - Corrector to adjust gain of monitor signal to compensate for wavelength dependency of insertion loss
Potential Applications: - Optical communication systems - Fiber optic networks - Data transmission technologies
Problems Solved: - Compensating for wavelength dependency of insertion loss in optical modulators - Improving the performance of optical transmitters
Benefits: - Enhanced efficiency and reliability of optical communication systems - Improved data transmission quality - Increased signal stability
Potential Commercial Applications of this Technology: Optical Transmitter Innovation for Enhanced Data Transmission
Possible Prior Art: - Previous optical transmitter designs using different modulation techniques - Prior methods for controlling bias in optical modulators
Unanswered Questions: 1. How does the corrector adjust the gain of the monitor signal to compensate for wavelength dependency? 2. What specific wavelengths are most affected by the insertion loss in the optical modulator?
Original Abstract Submitted
An optical transmitter includes: an optical modulator of a Mach-Zehnder type using an InP-based material; a bias controller configured to control a DC bias applied to the optical modulator; a monitor configured to monitor output light of the optical modulator to generate a monitor signal; and a corrector configured to correct a gain of the monitor signal in a direction in which wavelength dependency of insertion loss of the optical modulator is compensated according to a wavelength at a preceding stage of bias control by the bias controller.
