| Patent application number | Description | Published |
|---|
| 20080226287 | Method and Apparatus for Restoration of Operating Conditions of an Optical Ring Network Comprising a Plurality of Optical Amplifiers After a Break or Other Fault in the Ring Network - A method and apparatus for restoration of operating conditions of a WDM optical ring network comprising a plurality of amplifiers linked together in a ring after a break or fault has occurred in the network. The method comprises in response to repair of the break or other fault, increasing output power or/and pump power of an amplifier in the network such that the output power or/and pump power increases substantially in accordance with a ramp function. | 09-18-2008 |
| 20080273831 | Optical Logic Gate - An optical logic gate ( | 11-06-2008 |
| 20100033786 | Optical Waveguide Having Bistable Transmission States Suitable for Optical Logic Circuits - An optical circuit comprises a bistable optical waveguide ( | 02-11-2010 |
| 20100033807 | Optical Switch Assembly and Network Incorporating Same - An optical switch assembly comprising at least two optical amplifiers ( | 02-11-2010 |
| 20100316377 | ETHERNET TRANSMITTER APPARATUS - An optical transmitter apparatus capable of a transmission rate of at least 100 gbit/second comprises at least three input transmitters that each provide at an output an NRZ optical signal, at least two of the NRZ optical signals having substantially the same bit rate, each of the signals having a bit rate which is less than 100 Gbit/s and the sum of the bit rates of all of the at least three transmitters being at least equal to 100 Gbit/s, an NRZ to RZ converter associated with each transmitter which converts each NRZ signal into an optical RZ signal with the signal remaining in the optical domain during conversion, the optical RZ signal having the same bit rate as the corresponding NRZ signal, an optical time division multiplexer which converts the RZ signals into at least two further signals, one of the further signals being formed by bitwise interleaving the bits of the at least two of the RZ signals which have the same bit rate, and a polarisation multiplexer which processes the two further signals to provide two output signals of differing polarisation, each of the two output signals having the same bit rate as a respective one of the two further signals. The NRZ to RZ converters may be implemented using a SOA based device. | 12-16-2010 |
| 20110069362 | OPTICAL SIGNAL PROCESSING - Optical signal processor ( | 03-24-2011 |
| 20110110671 | Optical Networks - Improvements in or relating to Optical Networks. The invention relates to improvements in or relating to optical networks, and methods and an apparatus for providing communications services. Receiving an optical signal is described comprising a carrier wavelength and optical data. The optical data is substantially erased, and the carrier wavelength is re-modulated with user data for onward transmission of the user data. | 05-12-2011 |
| 20110122470 | OPTICAL FLIP-FLOP - An optical flip-flop comprises first ( | 05-26-2011 |
