| LUXPERT TECHNOLOGIES CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20100119232 | LIGHT SOURCE DISTRIBUTOR FOR USE IN WAVELENGTH DIVISION MULTIPLEXED-PASSIVE OPTICAL NETWORK - The present disclosure is directed to a light source distributor for use in an injection-locked WDM-PON (wavelength division multiplexed-passive optical network). The light source distributor receives an A band and a B band injection optical signals through a single optical terminal from an injection light source for outputting both the A band and the B band injection optical signals; transmits the A band injection optical signal to a first optical multiplexer/demultiplexer of a central office and the B band injection signal to a second optical multiplexer/demultiplexer of a remote node; transmits a wavelength-locked A band optical signal received from the first optical multiplexer/demultiplexer to the second optical multiplexer/demultiplexer; and transmits a wavelength-locked B band optical signal received from the second optical multiplexer/demultiplexer to the first optical multiplexer/demultiplexer. | 05-13-2010 |
| 20100067921 | METHOD AND SYSTEM FOR CONTROLLING DRIVING CURRENT OF WDM-PON OPTICAL TRANSMITTER - The present disclosure relates to a WDM-PON (wavelength division multiplexed-passive optical network) optical transmitter; and, more particularly, to a system for controlling driving current of the WDM-PON optical transmitter. The present disclosure provides a driving current control method of the optical transmitter for in use in the WDM-PON, including: setting an attenuation value of a variable optical attenuator to X; detecting an optical power Px received by a monitoring photo diode of the optical transmitter; setting an attenuation value of the variable optical attenuator to Y; detecting an optical power Py received by the monitoring photo diode of the optical transmitter; calculating an optical power Pout of an optical signal outputted from a common terminal of a 1×N optical multiplexer/demultiplexer based on the detected optical power Px and Py; and controlling a driving current based on the calculated optical power Pout. | 03-18-2010 |
| 20100067911 | INJECTION LIGHT GENERATOR FOR USE IN WAVELENGTH DIVISION MULTIPLEXED-PASSIVE OPTICAL NETWORK - The invention is related to an injection light generator for use in a wavelength division multiplexed-passive optical network, which generates A-band injection light having a spectrum range separated into N wavelength ranges (N is a natural number equal to or greater than 2) to be used for a transmission of a downstream optical signal and B-band injection light having a spectrum range separated into N wavelength ranges to be used for a transmission of an upstream optical signal. | 03-18-2010 |
| 20100067907 | METHOD AND SYSTEM FOR CONTROLLING DRIVING CURRENT OF WDM-PON OPTICAL TRANSMITTER - The present disclosure relates to a WDM-PON optical transmitter; and, more particularly, to a system for controlling a driving current of the WDM-PON optical transmitter. The present disclosure provides a driving current control system of an optical transmitter for use in WDM-PON including a plurality of optical transmitters, each transmitter generating and transmitting a transmittance optical signal based on a driving current and an optical multiplexer/demultiplexer for combining the optical signals received from the plurality of the optical transmitters to output a combined optical signal through a single common terminal, wherein the driving current is controlled based on the combined optical signal outputted from the common terminal. | 03-18-2010 |
| 20090180502 | Injection Locking Type Light Source Which of The Noise Can be Minimized - An injection seed of an injection locking type light source includes a broadband light source, a seed circulator receiving and transmitting a light from the light source to a seed optical filter passing only a desired wavelength band among the light beams from the light source and passing through the seed circulator, and an injection light source receiving a light beam of a specific wavelength band passing through the seed optical filter and outputting the wavelength-locked light beam without modulation to the seed optical filter at a predetermined power. The seed optical filter receives and outputs the wavelength-locked light beam from the injection light source to the seed circulator, and the seed circulator receives and outputs the wavelength-locked light beam as a seed beam. Since noise signal of a seed beam is small, noise signal of a final transmitting beam is also small and preferable for the high speed communication. | 07-16-2009 |
