ALPHION CORPORATION Patent applications |
Patent application number | Title | Published |
20120038974 | Systems and Methods for Measuring Power Levels in an Optical Device - An apparatus for monitoring optical equipment in an optical circuit is disclosed in which the apparatus may include an optical device situated to receive an optical input signal and to reflect a portion of the energy of the received optical input signal, thereby providing a reflected input signal; a first photodiode located along a path of the reflected input signal, and operable to receive optical energy from the reflected optical input signal and from ambient optical power; a second photodiode located substantially outside the reflection path of the optical input signal; and means for calculating a magnitude of a power level of the optical input signal from values of outputs from the first and second photodiodes. | 02-16-2012 |
20110157688 | System and Method for Optical Communication Using Polarization Filtering - An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD. | 06-30-2011 |
20090059355 | System and Method for Optical Communication Using Polarization Filtering - An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD. | 03-05-2009 |
20090041454 | SOA-MZI Device Fault Isolation - A photonic integrated circuit having a plurality of circuit components, is disclosed, which may include an MMI for splitting signal power passing therethrough among first and second optical pathways coupled to first and second outputs, respectively, of the MMI, thereby directing first and second percentages of the signal power along the first and the second optical pathways, respectively; and a photodetector integrated into the photonic integrated circuit and coupled to said first optical pathway for measuring a signal power level on said first optical pathway. | 02-12-2009 |
20080231945 | Apparatus and Methods for Optical Communication - An optical circuit is disclosed, which may include a semiconductor optical amplifier (SOA); an optical filter operable to filter light emerging from the SOA; and a PIN for converting the light output from the optical filter into an electrical signal, wherein the gain profile of the optical filter is configured to maximize throughout of signal energy within a predetermined wavelength range (in-band), and to impose an insertion loss (L | 09-25-2008 |
20080219157 | SYSTEM AND METHOD FOR DATA RECONFIGURATION IN AN OPTICAL COMMUNICATION NETWORK - A system and method are disclosed that may be operable to avoid upstream reassembly at an optical line terminal in a passive optical network. | 09-11-2008 |