Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
All-optical time-division demultiplexing circuit and all-optical TDM-WDM conversion circuit










Image Number 16 for United States Patent #6204944.

An all-optical time-division demultiplexing circuit is designed to output all the channels of time-division multiplexed signal pulses to different output ports simultaneously. A pulse stream of time-division multiplexed signal pulses and linearly chirped control pulses synchronized with the signal channels are input into an optical Kerr medium. The optical Kerr medium provides locally cross-phase modulation to the control pulse, depending on the presence or absence of the signal pulses of each signal channel. And the optical Kerr medium modulates the power of the component frequencies .upsilon..sub.1, .upsilon..sub.2, . . . , .upsilon..sub.N of the control pulses in accordance with each of the signal channel, by inducing the optical frequency shift to compensate the control pulse chirp on the optical frequency axis. The Kerr medium outputs a power modulated control light, which is separated in a wavelength-division demultiplexing circuit into component frequencies .upsilon..sub.1, .upsilon..sub.2, . . . , .upsilon..sub.N of the control pulses which are to output to respective ports of corresponding to individual signal channels.








 
 
  Recently Added Patents
NMR, instrumentation, and flow meter/controller continuously detecting MR signals, from continuously flowing sample material
IC layout parsing for multiple masks
Method for switching between virtualized and non-virtualized system operation
Semiconductor device and method of manufacturing the same
Light-source control device, light-source control method, image reading device, and image forming apparatus
Pluggable power cell for an inverter
Signal activated molecular delivery
  Randomly Featured Patents
Method for reducing hydrogen sulfide emissions from wastewater
Reversed damascene process for multiple level metal interconnects
Systems and methods for determining visibility and reputation of a user on the internet
Custom camouflage covers and panels
Roof support apparatus for solar panels
Air mass flow controller valve
Side plug-in outlet
Screen-space formulation to facilitate manipulations of 2D and 3D structures through interactions relating to 2D manifestations of those structures
Method and device for calibrating a measuring system
Boom and linkage mechanism for skid-steer loader