Resources Contact Us Home
Method of wavelength alignment for a wavelength division multiplexed passive optical network

Image Number 7 for United States Patent #8126332.

Described is a method for controlling the wavelength of a laser in a wavelength division multiplexed (WDM) system. The method includes generating broadband light having a dithered optical power and a wavelength spectrum that includes a plurality of WDM wavelengths. The broadband light is spectrally filtered to generate a spectrally-sliced optical signal having a wavelength spectrum that includes one of the WDM wavelengths. The spectrally-sliced optical signal is injected into a laser and a dithered optical power of the laser is determined. A parameter of the laser is controlled in response to the determination of the dithered optical power to thereby align a wavelength of the laser to the wavelength spectrum of the spectrally-sliced optical signal.

  Recently Added Patents
Resist composition and method for producing resist pattern
Driving system of display panel having a circuit of a voltage generator and driving method thereof
Cooking tray
Variable delay line for delay locked loop
Negative active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery comprising the same
Wafer level package and fabrication method
  Randomly Featured Patents
Light-exclusion covering, method for its production and a device for actuation of the light-exclusion covering
Carbon electrode for arc lamp
Heteroaromatic selective inhibitors of neuronal nitric oxide synthase
Cup-holder speaker phone
Hair braiding machine
Explosive detonation apparatus
Labeling machine
Aquatic exercise device
Periodically actuable tappet for a valve train or a pump drive
Color imaging apparatus