Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical transmitter apparatus










Image Number 10 for United States Patent #7657190.

An optical DQPSK modulator comprises a pair of phase modulators. Each of the pair of the phase modulators is provided with first and second driving signals. The first and second driving signals are amplified by first and second amplifiers, respectively. An RZ intensity modulator generates an optical RZ-DQPSK signal from an optical DQPSK signal output from the optical DQPSK modulator. A photodetector generates a monitor signal from the optical RZ-DQPSK signal. A gain adjuster unit adjusts the gains of the first and second amplifiers so as to minimize the power of the monitor signal.








 
 
  Recently Added Patents
Nanocatalysts structure, process for the preparation and use thereof
Method of creating exercise routes for a user and related personal navigation device
Low power voltage controlled oscillator (VCO)
Method and system for establishing enhanced key when terminal moves to enhanced universal terminal radio access network (UTRAN)
Electronic system with vertical intermetallic compound
Cosmetic product including vegetable oil blend
Low-staining room temperature curable coating composition
  Randomly Featured Patents
Soybean variety XBP41003
Circuit and method for initializing an internal logic unit in a semiconductor memory device
Camera installed with electronic flash
Illumination system
Method of piggybacking multiple data tenures on a single data bus grant to achieve higher bus utilization
Optimized data transmission system and method
Process for disinfecting water
Continuously cast electrical steel strip
Instrument protective device
Commonly housed multiple processor type computing system and method of manufacturing the same