Optical systems including add drop devices and methods
First Claim
1. An optical system comprising:
- at least a first optical transmitter configured to transmit information via optical signals including at least one signal wavelength;
an add/drop device configured to receive the optical signal from said first optical transmitter via an input path, said add/drop device including a first selective element configurable to pass a first signal wavelength from said input path to a first add/drop path and pass continuing signal wavelengths differing from the first signal wavelength to a second add/drop path, a second selective element configurable to pass a second signal wavelength from said first add/drop path and continuing signal wavelengths differing from the second signal wavelength from said second add/drop path to an output path and pass the second signal wavelength from said second add/drop path and signal wavelengths differing from the second signal wavelength from said first add/drop path to a drop path;
at least a first optical receiver configured to receive the output signal from said add/drop device; and
, at least a second optical receiver configured to receive the drop signal from said add/drop device.
5 Assignments
0 Petitions
Accused Products
Abstract
Optical systems of the present invention include an add/drop device and/or cross-connect device, which is reconfigurable to add and drop signal wavelengths between one or more transmission paths. The add/drop device includes a first selective element configurable to pass a first group of signal wavelengths including at least a first signal wavelength from an input path to a first add/drop path and pass continuing signal wavelengths differing from the first group of signal wavelength to a second add/drop path. A second selective element is provided that is configurable to pass a second group of signal wavelengths including at least a second signal wavelength from said first add/drop path and continuing signal wavelengths differing from the second group of wavelengths from said second add/drop path to an output path. The second selective element is further configured to pass the second group of signal wavelengths from said second add/drop path and wavelengths differing from the second wavelength from said first add/drop path to a drop path. The add/drop device may also include an add path to introduce add signal wavelengths directly to the output path or via at least one of the first and second selective elements.
-
Citations
20 Claims
-
1. An optical system comprising:
-
at least a first optical transmitter configured to transmit information via optical signals including at least one signal wavelength;
an add/drop device configured to receive the optical signal from said first optical transmitter via an input path, said add/drop device including a first selective element configurable to pass a first signal wavelength from said input path to a first add/drop path and pass continuing signal wavelengths differing from the first signal wavelength to a second add/drop path, a second selective element configurable to pass a second signal wavelength from said first add/drop path and continuing signal wavelengths differing from the second signal wavelength from said second add/drop path to an output path and pass the second signal wavelength from said second add/drop path and signal wavelengths differing from the second signal wavelength from said first add/drop path to a drop path;
at least a first optical receiver configured to receive the output signal from said add/drop device; and
,at least a second optical receiver configured to receive the drop signal from said add/drop device. - View Dependent Claims (2, 3)
-
-
4. An optical add/drop device comprising:
-
a first selective element configurable to pass at least a first signal wavelength from an input path to a first add/drop path and pass continuing signal wavelengths differing from the first signal wavelength to a second add/drop path; and
,a second selective element configurable to pass at least a second signal wavelength from said first add/drop path and continuing signal wavelengths differing from the second signal wavelength from said second add/drop path to an output path and pass the second signal wavelength from said second add/drop path and signal wavelengths differing from the second signal wavelength from said first add/drop path to a drop path. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method of dropping a first signal wavelength to a drop path comprising:
-
inputting an optical signal including at least one signal wavelength into an input path;
providing a first selective element configured to pass a first signal wavelength from the input path to a first add/drop path and pass continuing signal wavelengths differing from the first signal wavelength to a second add/drop path; and
,providing a second selective element configured to pass a second signal wavelength from the first add/drop path and continuing signal wavelengths differing from the second signal wavelength from said second add/drop path to an output path and pass the second signal wavelength from the second add/drop path and signal wavelengths differing from the second signal wavelength including the first signal wavelength from the first add/drop path to a drop path. - View Dependent Claims (20)
-
Specification