Internal pluggable optical module
View Patent ↗A pluggable electro-optical module is mounted completely within the housing of a host device, e.g. testing equipment, to protect the module from external forces, such as ESD, dust and impacts. Furthermore, an equipment manufacturer can use any form of electro-optical module with any type of optical connector receptor, and adapt the electro-optic module into their optical equipment by using an adaptor cable and an optical connector adaptor, which optically couples the module to their end customer's network regardless of the optical connector on the module or the network cable.
1. An electro-optical system comprising:
a host printed circuit board with a faceplate for mounting in a housing of a host device;
a first cage mounted on the host printed circuit board inside the housing without being directly accessible from outside of the housing when the host printed circuit board is mounted in the host device, the first cage including a first pluggable electrical connector;
a first electro-optical module inserted into the first cage, the module including a first optical receptor, and a second pluggable electrical connector for releasably mating with the first pluggable electrical connector;
a first adaptor cable having a first end with a first optical connector for plugging into the first optical receptor, and a second end with a second optical connector; and
an optical connector adaptor mounted on the faceplate, including a second optical receptor optically coupled with the second optical connector, and a third optical receptor;
whereby an external optical cable connector on an end of an external optical cable optically coupled to an external optical network is pluggable into the third optical receptor of the optical connector adaptor for optically coupling the first electro-optical module to the external optical network.
2. The optical system according to claim 1 , further comprising:
a second cage mounted on the host printed circuit board inside the housing without being directly accessible from outside of the housing when the host printed circuit board is mounted in the host device, the second cage including a third pluggable electrical connector; and
a second electro-optical module inserted into the second cage, the second electro-optical module including a fourth pluggable electrical connector for releasably mating with the third pluggable electrical connector, and a fourth optical receptor.
3. The optical system according to claim 2 , wherein the first adaptor cable is alternatively pluggable into the first and fourth optical receptors for optically coupling the first or the second electro-optical module to the external optical network.
4. The optical system according to claim 2 , further comprising:
a second adaptor cable having a first end with a third optical connector for plugging into the fourth optical receptor, and a second end; and
a coupler for receiving the second optical connector and the second end of the second adaptor cable, the coupler being optically coupled with the second optical receptor;
whereby the first and second electro-optical modules can be alternatively actuated by the host device to receive or launch optical signals via the optical cable adaptor.
5. The optical system according to claim 1 , wherein the first adaptor cable has a length, which ensure that only a single loop with a large enough bend radius to prevent leakage therefrom, is formed between the first electro-optical module and the optical connector adaptor to facilitate assembly and eliminate the need for fiber management devices.
6. The optical system according to claim 1 , wherein the cage is tilted at an acute angle to the host printed circuit board to facilitate insertion of the electro-optical module into the cage.
7. The optical system according to claim 1 , further comprising spacers for raising the cage above the host printed circuit board to facilitate insertion of the electro-optical module into the cage.
8. The optical system according to claim 1 , further comprising a raised printed circuit board spaced from the host printed circuit board for supporting the cage above the host printed circuit board to facilitate insertion of the electro-optical module into the cage.
9. The optical system according to claim 1 , wherein the cage is mounted proximate an edge of the host circuit board remote from the faceplate to facilitate insertion of the electro-optical module into the cage.
10. A mobile optical network test equipment device for testing external optical networks including external optical cables with external optical cable connectors comprising:
a host printed circuit board including control and monitoring circuitry for testing optical networks, the host printed circuit board having a faceplate with an access hole;
a housing having a slot for receiving the host printed circuit board, which is enclosed within the housing by the faceplate;
a first cage mounted on the host printed circuit board inside the housing without being directly accessible from outside of the housing when the host printed circuit board is mounted in the housing, the first cage including a first pluggable electrical connector;
a first electro-optical module for insertion into the first cage, the first module including a second pluggable electrical connector for releasably mating with the first pluggable electrical connector, and a first optical receptor;
a first adaptor cable, having a first end with a first optical connector for plugging into the first optical receptor, and a second end;
a second cage mounted on the host printed circuit board inside the housing without being directly accessible from outside of the housing when the host printed circuit board is mounted in the housing, the second cage including a third pluggable electrical connector;
a second electro-optical module for insertion into the second cage, the second module including a fourth pluggable electrical connector for releasably mating with the third pluggable electrical connector, and a second optical receptor;
a second adaptor cable, having a first end with a second optical connector for plugging into the second optical receptor, and a second end;
an optical coupler optically coupled to the second ends of the first and second adaptor cables; and
a first optical connector adaptor mounted in the access hole of the faceplate optically coupled with the optical coupler, and including a third optical receptor for receiving a first external optical cable connector on an end of a first external optical cable from a first external network;
whereby the first and second electro-optical modules are alternatively actuated by the control circuitry to receive or launch optical signals via the first optical cable adaptor.
11. The device according to claim 10 , wherein the first and second electro-optical modules transmit optical signals with different characteristics enabling the external optical network to be tested with and for variable optical signals; wherein the different characteristics are selected from the group consisting of wavelength, signal strength and data content.
12. The device according to claim 10 , further comprising a second optical connector adaptor for optically coupling with the optical coupler, the second optical connector adaptor including a fourth optical receptor for receiving a second external optical cable connector, different from the first external optical cable connector, on an end of a second external optical cable of a second external network, whereby the first optical connector adaptor is replaced with the second optical connector adaptor when the second external optical network is being tested.
13. The optical system according to claim 10 , wherein the first adaptor cable has a length, which ensure that only a single loop with a large enough bend radius to prevent leakage therefrom, is formed between the first electro-optical module and the first optical connector adaptor to facilitate assembly and eliminate the need for fiber management devices.
14. The optical system according to claim 10 , wherein the first cage is tilted at an acute angle to the host printed circuit board to facilitate insertion of the first electro-optical module into the first cage.
15. The optical system according to claim 10 , further comprising spacers for raising the first cage above the host printed circuit board to facilitate insertion of the first electro-optical module into the first cage.
16. The optical system according to claim 10 , further comprising a raised printed circuit board spaced from the host printed circuit board for supporting the first cage above the host printed circuit board to facilitate insertion of the first electro-optical module into the first cage.
17. The optical system according to claim 10 , wherein the first cage is mounted proximate an edge of the host circuit board remote from the faceplate to facilitate insertion of the first electro-optical module into the first cage.