Transceiver assembly for use in fiber optics communications
a technology of optical communication and optical components, applied in the field of parallel optical assemblies for fiber optic communication, can solve the problems of increasing the complexity of alignment tasks, limiting the amount of data that can be used, and relatively limited bandwidth of copper wiring for carrying electrical signals
Inactive Publication Date: 2006-07-20
STRATOS INT
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Benefits of technology
"The present invention is about a transceiver assembly for fiber optic communications systems. It includes an optoelectronic subassembly with a set of photoactive components and a frame section that supports the optoelectronic device and aligns it with the optical fibers in the ferrule. The assembly also has a rigid circuit board and a flex circuit for electrically connecting the optoelectronic device and a controller chip for controlling the signals provided to the optoelectronic device. The technical effects of the invention are improved signal quality and reliability in fiber optic communications systems."
Problems solved by technology
However, copper wiring has relatively limited bandwidth for carrying electrical signals which greatly constrains the amounts of data that it can be used to transmit.
In parallel optics modules which use multiple fibers and multiple communications channels for high bandwidth applications the fiber optic ends are closely spaced in an array which greatly increases the complexity of this alignment task.
Consequently, the process is labor intensive and results in low yields due to assembly errors and quality assurance problems.
However, this type of design has weaknesses.
Method used
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[0026] The present invention will now be described in detail with reference to preferred embodiments as illustrated in the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it should be apparent to one skilled in the art that the present invention may be practiced without some or all of these specific details. In other instances it should be appreciated that well-known process steps have not been described in detail in order to not obscure the present invention.
[0027] Referring now to FIGS. 1 and 2, a fiber optic connector assembly 10 is shown as comprising an optical ferrule 12 of the type sometimes referred to in the industry as an MT ferrule installed on the end of a cable 14 carrying multiple fiber optic communication elements 17 (not shown in FIGS. 1-2) and an optoelectronic subassembly 16 which operates as a transceiver module for either transmitting ligh...
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A transceiver assembly includes a frame section, a rigid circuit board, a flex circuit, and a controller chip. The frame section includes an optoelectronic device containing a set of photoactive components, a signal processing chip for providing drive signals to the set of photoactive components, and a flex circuit layer. The rigid circuit board includes a first rigid printed circuit board layer, a second rigid printed circuit board layer, and a flex circuit layer. The flex circuit also forms the flex circuit layers in the rigid circuit board and the frame section. The flex circuit is adapted for electrically coupling the first and second printed circuit board layers in the rigid circuit board to the frame section. The controller chip is mounted on a surface of the first rigid printed circuit board layer.
Description
[0001] This is a divisional of application Ser. No. 09 / 954,133 filed Sep. 17, 2001, which is hereby incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates generally to optoelectronic devices, and more specifically to parallel optics assemblies for use in fiber optic communications. [0004] 2. Discussion of the Background [0005] The majority of computer and communication networks today rely on copper wiring to transmit data between nodes in the network. However, copper wiring has relatively limited bandwidth for carrying electrical signals which greatly constrains the amounts of data that it can be used to transmit. [0006] Many computer and communication networks, including a large part of the Internet, are now being built using fiber optic cabling which has superior bandwidth capabilities and can be used to transmit much greater amounts of data. With fiber optic cabling, data is transmitted using light signal...
Claims
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IPC IPC(8): G02B6/36
CPCG02B6/4201G02B6/4249G02B6/4292G02B6/4261G02B6/4269G02B6/428G02B6/4281G02B6/4283G02B6/4284
InventorCHENG, HENGJUXU, LEE L.KIM, BRIANCREWS, DARRENCHIN, JESSE
OwnerSTRATOS INT