Transceiver for LC connector
View Patent ↗A testable optical subassembly comprising a unitary structure of an optically-clear moldable material having at least the following features: (a) an optical path for transmitting optical signals between a fiber and an optoelectric device (OED); (b) a ferrule-receiving bore for receiving a ferrule and aligning a fiber held therein to the optical path; and (c) an OED-receiving cavity for receiving a lead frame and aligning an OED mounted thereon to the optical path along one or more axes.
1. A testable optical subassembly for use in an opto-electric module to transmit optical signals between a fiber held in a ferrule and an OED, said optical subassembly comprising a unitary structure of an optically-clear moldable material having at least the following features:
an optical path for transmitting optical signals between said fiber and said OED;
a ferrule-receiving bore for receiving said ferrule and aligning said fiber held therein to said optical path; and
an OED-receiving cavity for receiving a lead frame and aligning said OED mounted thereon to said optical path in one or more axes.
2. The testable optical subassembly of claim 1 , wherein said optical path comprises at least:
a first lens adapted for optically coupling with said fiber;
a second lens adapted for optically coupling with said OED; and
at least one reflective surface disposed along said optical path to alter the direction of said optical path.
3. The testable optical subassembly of claim 1 , further comprising:
said lead frame mounted in said OED-receiving cavity such that said OED is optically coupled to said optical path.
4. The testable optical subassembly of claim 1 , wherein said optical block comprises an injection- moldable material.
5. The testable optical subassembly of claim 1 , wherein said OED-receiving cavity is standardized to a particular lead frame configuration, said lead frame configuration being adapted to support lasers, LEDs, photodiodes or detectors.
6. An optoelectric module comprising:
a connector interface adapted to interconnect with a fiber assembly having a ferrule with a fiber held therein;
an optical block comprising a unitary structure of an optically-clear moldable material having at least the following features:
an optical path for transmitting optical signals between said fiber and an OED;
a ferrule-receiving bore for receiving said ferrule and aligning said fiber held therein to said optical path; and
an OED-receiving cavity for receiving a lead frame and aligning an OED mounted thereon to said optical path in one or more axes;
said lead frame mounted in said OED-receiving cavity such that said OED is optically coupled to said optical path; and
a printed circuit board comprising a plurality of contacts adapted for electrical connection with a host circuit board of a host system, a portion of said contacts being electrically coupled to said OED.
7. The module of claim 6 , wherein said contacts are arranged adjacent an edge of said printed circuit board for mating with a card edge connector mounted to said host circuit board.
8. The module of claim 6 , wherein said portion of contacts are electrically coupled to said OED by traces on a flat, flexible circuit board.
9. The module of claim 6 , wherein said printed circuit board is pin staked to said connector interface.
10. The module of claim 6 , further comprising a conductive shield mounted to said connector interface, said conductive shield at least partially enclosing said printed circuit board.
11. The module of claim 6 , wherein said printed circuit board is pin staked to said connector interface at a proximal end of said printed circuit board and wherein said conductive shield comprises a resilient standoff extending out of a plane defined by a portion of said conductive shield and into contact with said printed circuit board for supporting a distal end of said printed circuit board, wherein said resilient standoff is positioned to contact an integrated circuit chip mounted on said printed circuit board.
12. The module of claim 6 , wherein said printed circuit board is pin staked to said connector interface at a proximal end of said printed circuit board and wherein said proximal end is separated from said connector interface by a printed circuit board spacer.
13. The module of claim 6 , wherein said optical path comprises at least:
a first lens adapted for optically coupling with said fiber;
a second lens adapted for optically coupling with said OED; and
at least one reflective surface disposed along said optical path to alter the direction of said optical path.
14. A process of manufacturing an optoelectric module comprising the steps of:
(a) providing an optical block comprising a unitary structure of an optically-clear moldable material having at least the following features:
an optical path for transmitting optical signals between a fiber and an OED;
a ferrule-receiving bore for receiving a ferrule containing a fiber and aligning the fiber to said optical path; and
an OED-receiving cavity for receiving a lead frame with an OED mounted thereon and aligning the OED to said optical path in one or more axes;
(b) mounting a lead frame in said OED-receiving cavity such that an OED mounted on said lead frame is optically coupled to said optical path, thereby forming a testable optical subassembly;
(c) inserting a ferrule containing a fiber into said ferrule-receiving bore; and
(d) testing said testable optical subassembly before substantially further assembling said optoelectric module.
15. The process of claim 14 , wherein testing is conducted while actively aligning said OED.
16. The process of claim 14 , wherein testing is conducted after said OED is fixed in place within said OED-receiving cavity.