SWDM OSAs
First Claim
1. An N-channel wavelength division multiplexing or demultiplexing (WDM) optical subassembly (OSA), comprising:
- a plurality of active optical devices coupled to a carrier;
an optical block positioned above the plurality of active optical devices and coupled to the carrier, wherein the optical block includes;
a bottom with a plurality of lenses formed in the bottom that are aligned with the plurality of active optical devices;
a first side that extends up from the bottom;
a second side that extends up from the bottom and is opposite the first side;
a port that extends forward from the bottom and the first and second sides; and
an optical block cavity defined by the bottom and the first and second sides that extends rearward from the port; and
a wavelength division multiplexer (MUX) or a wavelength division demultiplexer (DEMUX) positioned in the optical block cavity in an optical path between the port of the optical block and the plurality of active optical devices, the MUX or the DEMUX comprising;
a first thin film filter positioned above a first of the plurality of active optical devices and a first of the plurality of lenses;
a second thin film filter positioned above a second of the plurality of active optical devices and a second of the plurality of lenses;
a third thin film filter positioned above a third of the plurality of active optical devices and a third of the plurality of lenses; and
a mirror positioned in the optical path between the port of the optical block and a fourth of the plurality of active optical devices above the fourth of the plurality of active optical devices and a fourth of the plurality of lenses.
5 Assignments
0 Petitions
Accused Products
Abstract
In an example embodiment, an N-channel WDM OSA includes active optical devices coupled to a carrier, an optical block, and a MUX or a DEMUX. The optical block may be positioned above the active optical devices and coupled to the carrier. The optical block may include a bottom with lenses formed in the bottom that are aligned with the active optical devices; a first side that extends up from the bottom; a second side that extends up from the bottom and is opposite the first side; a port that extends forward from the bottom and the first and second sides; and an optical block cavity defined by the bottom and the first and second sides that extends rearward from the port. The MUX or DEMUX may be positioned in the optical block cavity in an optical path between the port of the optical block and the active optical devices.
16 Citations
21 Claims
-
1. An N-channel wavelength division multiplexing or demultiplexing (WDM) optical subassembly (OSA), comprising:
-
a plurality of active optical devices coupled to a carrier; an optical block positioned above the plurality of active optical devices and coupled to the carrier, wherein the optical block includes; a bottom with a plurality of lenses formed in the bottom that are aligned with the plurality of active optical devices; a first side that extends up from the bottom; a second side that extends up from the bottom and is opposite the first side; a port that extends forward from the bottom and the first and second sides; and an optical block cavity defined by the bottom and the first and second sides that extends rearward from the port; and a wavelength division multiplexer (MUX) or a wavelength division demultiplexer (DEMUX) positioned in the optical block cavity in an optical path between the port of the optical block and the plurality of active optical devices, the MUX or the DEMUX comprising; a first thin film filter positioned above a first of the plurality of active optical devices and a first of the plurality of lenses; a second thin film filter positioned above a second of the plurality of active optical devices and a second of the plurality of lenses; a third thin film filter positioned above a third of the plurality of active optical devices and a third of the plurality of lenses; and a mirror positioned in the optical path between the port of the optical block and a fourth of the plurality of active optical devices above the fourth of the plurality of active optical devices and a fourth of the plurality of lenses. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An optoelectronic module, comprising:
-
a housing that defines a cavity; and an N-channel wavelength division multiplexing or demultiplexing (WDM) optical subassembly (OSA) positioned within the cavity comprising; a plurality of active optical devices coupled to a carrier; an optical block coupled to the carrier, the optical block defining an optical block cavity; a wavelength division multiplexer (MUX) or a wavelength division demultiplexer (DEMUX) positioned in the optical block cavity and optically coupled with the plurality of active optical devices, the MUX or DEMUX comprising; a first thin film filter positioned above a first of the plurality of active optical devices; a second thin film filter positioned above a second of the plurality of active optical devices; and a third thin film filter positioned above a third of the plurality of active optical devices; and a mirror positioned in the optical block cavity above a fourth of the plurality of active optical devices. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
-
14. A method to assemble an N-channel wavelength division multiplexing or demultiplexing (WDM) optical subassembly (OSA) that includes an optical block, a carrier, N−
- 1 thin film filters, and a mirror, the method comprising;
aligning the optical block to the carrier such that each of N lenses formed in a bottom of the optical block is positioned above and is aligned to a corresponding one of N active optical devices coupled to the carrier; securing the optical block to the carrier with the optical block aligned to the carrier; individually aligning each of the N−
1 thin film filters and the mirror to the optical block to form with the N lenses an optical path that directs light between the N active optical devices and a port of the optical block that extends forward from the bottom and first and second sides of the optical block, wherein the bottom and the first and second sides of the optical block define an optical block cavity that extends rearward from the port and the N−
1 thin film filters and the mirror are aligned to the optical block within the optical block cavity; andsecuring each of the N−
1 thin film filters and the mirror to the optical block with the N−
1 thin film filters and the mirror aligned to the optical block;wherein; a first thin film filter of the N−
1 thin film filters is secured above a first of the N active optical devices;a second thin film filter of the N−
1 thin film filters is secured above a second of the N active optical devices;a third thin film filter of the N−
1 thin film filters is secured above a third of the N active optical devices; andthe mirror is secured above a fourth of the N active optical devices. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
- 1 thin film filters, and a mirror, the method comprising;
Specification