Optical subassembly for bidirectional WDM application
AssigneeAlpine Optoelectronics Inc.
InventorsTongqing Wang, Ming Ding
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Abstract
Embodiment of present invention provide an optical subassembly that includes a first, a second, and a third band filter (BF) each having a common port (CP), a port-A (PA), and a port-B (PB). The PA of the second BF is connected to the PA of the third BF and the PB of the first BF is connected to the PB of the third BF. The optical subassembly is adapted to route a first optical signal of a blue band from the PA to the CP of the first BF; to route the first optical signal from the CP of the second BF to the CP of the third BF; to route a second optical signal of a red band from the CP of the third BF to the CP of the first BF; and to route the second optical signal from the CP to the PB of the second BF.
Claims20
An optical subassembly comprising:
- a first IO port (IOP), a module port-1 (MP1), and a module port-2 (MP2) for passing optical signals of a first band and a second band with the second band being different from the first band in wavelength;
- a module port-A (MPA) for passing optical signals of the first band;
- and
- a module port-B (MPB) for passing optical signals of the second band,
- wherein the optical subassembly is adapted to route an optical signal of the first band from the MPA to the MP1;
- to route the optical signal of the first band from the MP2 to the first IOP;
- to route an optical signal of the second band from the first IOP to the MP1;
- and to route the optical signal of the second band from the MP2 to the MPB.
An optical subassembly comprising:
- a first band filter having a first common port (CP), a first port-A (PA), and a first port-B (PB);
- a second band filter having a second CP, a second PA, and a second PB;
- and a first IO module having a port-1, a port-2, and a port-3, wherein the second PA of the second band filter is connected to the port-1 of the first IO module and the first PB of the first band filter is connected to the port-3 of the first IO module,
- wherein the optical subassembly is adapted to route an optical signal of a blue band from the first PA to the first CP of the first band filter;
- to route the optical signal of the blue band from the second CP of the second band filter to the port-2 of the first IO module;
- to route an optical signal of a red band from the port-2 of the first IO module to the first CP of the first band filter;
- and to route the optical signal of the red band from the second CP to the second PB of the second band filter.
An optical subassembly comprising:
- a first band filter having a first common port (CP), a first port-A (PA), and a first port-B (PB);
- a second band filter having a second CP, a second PA, and a second PB;
- and a third band filter having a third CP, a third PA, and a third PB, wherein the second PA of the second band filter is connected to the third PA of the third band filter and the first PB of the first band filter is connected to the third PB of the third band filter,
- wherein the optical subassembly is adapted to route an optical signal of a blue band from the first PA to the first CP of the first band filter;
- to route the optical signal of the blue band from the second CP of the second band filter to the third CP of the third band filter;
- to route an optical signal of a red band from the third CP of the third band filter to the first CP of the first band filter;
- and to route the optical signal of the red band from the second CP to the second PB of the second band filter, and
- wherein a dispersion compensation module (DCM) and an optical fiber amplifier (OFA) are connected between the first CP of the first band filter and the second CP of the second band filter.
Dependencies are inferred from the claim text.