Optical module
An optical module includes an optical fiber connector, a transmitter optical component, a receiver optical component and a printed circuit board arranged within an optical module housing; the transmitter optical component and the receiver optical component are optically coupled to the optical fiber connector, and electrically connected to the printed circuit board which is arranged horizontally within the optical module housing. The transmitter optical component and the receiver optical component are stacked in a direction perpendicular to the printed circuit board. Stacking the transmitter optical component and the receiver optical component makes use of the width of the optical module by improving design flexibility of the optical path and the electric circuit, reducing or even substantially eliminating crosstalk between the high-speed devices and high-speed signals, and improving the heat dissipation effect of the optical module.
1. An optical module, comprising an optical module housing, an optical fiber connector, a transmitter optical component, a receiver optical component and a printed circuit board, wherein
the optical fiber connector, the transmitter optical component, the receiver optical component and the printed circuit board are arranged within the optical module housing,
the optical fiber connector includes a transmitting interface optically coupled with the transmitter optical component, and a receiving interface optically coupled with the receiver optical component, and the transmitting interface and the receiving interface are arranged side by side to form a horizontal arrangement,
the transmitter optical component and the receiver optical component are optically coupled to the optical fiber connector, and electrically connected to the printed circuit board,
the printed circuit board is arranged along a horizontal direction within the optical module housing,
the transmitter optical component including a transmitter optical component housing and a light-emitting device group arranged within the transmitter optical component housing,
the receiving optical component including a receiver optical component housing and a light-receiving device group arranged within the receiver optical component housing, and
the transmitter optical component housing of the transmitter optical component and the receiver optical component housing of the receiver optical component are stacked in a direction perpendicular to the horizontal direction along which the printed circuit board is arranged.
2. The optical module of claim 1 , wherein the transmitter optical component further comprises a first optical path coupling device and a first printed circuit board signal connector, wherein the light-emitting device group is optically coupled to the optical fiber connector via the first optical path coupling device, and the light-emitting device group is electrically connected to the printed circuit board via the first printed circuit board signal connector; and
the receiver optical component further comprises a second optical path coupling device and a second printed circuit board signal connector, wherein the light-receiving device group is optically coupled to the optical fiber connector via the second optical path coupling device, and the light-receiving device group is electrically connected to the printed circuit board via the second printed circuit board signal connector.
3. The optical module of claim 2 , wherein the first printed circuit board signal connector and the second printed circuit board signal connector are flexible printed circuit boards.
4. The optical module of claim 2 , wherein the first optical path coupling device comprises a first light-plane convertor configured to convert and connect the light plane, the first light-plane convertor located between the light-emitting device group and the optical fiber connector; and/or
the second optical path coupling device comprises a second light-plane convertor configured to convert and connect the light plane, and second light-plane convertor located between the light-receiving device group and the optical fiber connector.
5. The optical module of claim 1 , wherein the optical module housing comprises an upper housing and a lower housing;
the transmitter optical component housing is in direct contact with the upper housing, or in heat-transfer contact with the upper housing via heat conduction material; and
the receiver optical component housing is in direct contact with the lower housing or in heat-transfer contact with the lower housing via heat conduction material.
6. The optical module of claim 1 , wherein the printed circuit board comprises a substrate, a transmitter optical component interface, a receiver optical component interface, an electrical interface, a first circuit board wiring and a second circuit board wiring, the electrical interface comprising a transmitter data interface and a receiver data interface;
the substrate comprises a first surface and a second surface opposite to the first surface;
the transmitter optical component interface is coupled to the first printed circuit board signal connector to form the electric connection, and the transmitter optical component interface and the transmitter data interface are arranged on the first surface and coupled with each other via the first circuit board wiring to form a transmitter data transmission path; and
the receiver optical component interface is coupled to the second printed circuit board signal connector to form the electric connection, and the receiver optical component interface and the receiver data interface are arranged on the second surface and coupled with each other via the second circuit board wiring to form a receiver data transmission path.
7. The optical module of claim 6 , wherein the first circuit board wiring is arranged on the first surface; and/or
the second circuit board wiring is arranged on the second surface.
8. The optical module of claim 6 , wherein the substrate has a multi-layer pressured laminated structure.
9. The optical module of claim 6 , wherein the printed circuit board further comprises a transmitted signal processing chip which is arranged on the first surface and coupled to the transmitter optical component interface and the transmitter data interface respectively via the first circuit board wiring; and/or
a received signal processing chip which is arranged on the second surface and coupled to the receiver optical component interface and the receiver data interface respectively via the second circuit board wiring.
10. The optical module of claim 9 , wherein the transmitted signal processing chip is any one of the group consisting of clock and data recovery chip, laser driver chip and/or multiplex and de-multiplex chip; and
the received signal processing chip is any one of the group consisting of clock and data recovery chip, post amplifier chip and/or multiplex and de-multiplex chip.