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
Human embryonic stem cell methods and PODXL expression
Stable liquid VEGF antagonist formulations
Pyroelectric detector, pyroelectric detection device, and electronic instrument
Methods and apparatus to identify exposure to 3D media presentations
Display screen with graphical user interface
Operation controlling apparatus
Female urine funnel
  Randomly Featured Patents
Valve regulation for turbocharger
Egg carton
Gaming accessory
DVD-RAM recorder with LCD television receiver
Novel substrates for use in measuring the concentration of kallikrein in urine
Bicycle safety reflector
Preparation of high cis-1,4-polybutadiene with reduced gel
Method and system for modeling logical circuit blocks including transistor gate capacitance loading effects
Method of bending shaped metal sheet and apparatus for carrying out the method