Resources Contact Us Home
Interleaved wavelengths multi/demultiplexer with multiple-input-ports and multiple-output-ports for wavelength add/drop WDM systems

Image Number 3 for United States Patent #6181849.

The present claimed invention improves on the conventional comb and multiple router approach by making multiple use of a single router by using interleaved groups of wavelengths that enter through different entrance ports and exit through different groups of exit ports of the same router. This permits better separation (lower crosstalk) between adjacent channels, greatly reduced temperature sensitivity, small physical size and lower cost. With these improvements, a large number of wavelength add/drop sites may be cascaded in WAD/WDM systems.

  Recently Added Patents
Communication system, authentication device, control server, communication method, and program
Calcium carbonate granulation
Systems and methods for controlling registration of advancing substrates in absorbent article converting lines
Trading related to fund compositions
Pyridazine compounds for controlling invertebrate pests
Roll of continuous web of optical film laminate and production method therefor
Non-volatile memory cell containing a nano-rail electrode
  Randomly Featured Patents
Copper foil bonding treatment with improved bond strength and resistance to undercutting
Closure plate for bottle crusher
Combined bill clip and safety pin
Security lock for door
Bacteriolytic enzyme product from streptomyces, a process for its preparation, and a strain suitable for this purpose
Electric contact and an electric connector both using resin solder and a method of connecting them to a printed circuit board
EMI chassis seam
N-benzoyl N-pyridyloxy phenyl urea
Rectangular watch dials
Tall, square container comprising a bowl and a lid