The present disclosure relates to light signal connectors, and in particular to an octal small form factor pluggable (OSFP) 4.0 specification and an assembly method thereof.
The octal small form factor pluggable (OSFP) Multi Source Agreement (MSA) group announced the release of the OSFP 4.0 Specification for 800G OSFP modules. While the OSFP module was designed from the beginning to support 800G performance, the OSFP 4.0 specification adds support for 2×400G and 8×100G new module definitions of dual 400G and octal 100G breakout modules with dual LC (local connector), dual Mini-LC, dual MPO (multi push on) and octal SN/MDC (Senko Nano/Mini-Duplex Connector) fiber connector options.
However, the OSFP 4.0 specification does not state how to solve the problems with production, manufacturing and assembly, for example, the distance and tolerance between optical fiber ports, and the tolerance between a casing and the optical fiber ports.
An objective of the present disclosure is to solve problems with conventional octal small form factor pluggables (OSFP) by providing an octal small form factor pluggable (OSFP) effective in eliminating tolerance.
To achieve at least the above objective, the present disclosure provides an octal small form factor pluggable (OSFP), comprising: a base comprising four optical fiber ports located at four corners of an imaginary rectangle, respectively, a receiving portion and a holder, the four optical fiber ports being disposed at a front end of the base, the receiving portion being positioned proximate to the four optical fiber ports and having a receiving space, with the holder disposed in the receiving space and positioned proximate to two lower ones of the four optical fiber ports, wherein two dent portions corresponding in shape to terminals are disposed on an upper surface of the holder and correspond in position to the two lower optical fiber ports; a spacer disposed above the holder, wherein two lower recess portions corresponding in shape to terminals are disposed on a lower surface of the spacer and adapted to clamp the terminals together with the dent portions, wherein two upper recess portions corresponding in shape to terminals are disposed on an upper surface of the spacer and positioned proximate to two upper ones of the four optical fiber ports; and a lid for covering the receiving portion.
In an embodiment of the present disclosure, the upper surface of the holder further has two transverse grooves crossing the dent portions, respectively.
In an embodiment of the present disclosure, the lower surface of the spacer further has two transverse grooves crossing the upper recess portions, respectively.
In an embodiment of the present disclosure, the upper surface of the spacer further has two transverse grooves crossing the lower recess portions, respectively.
In an embodiment of the present disclosure, the holder has two fastening holes, whereas the spacer and the lid each have two through holes corresponding in position to the two fastening holes.
In an embodiment of the present disclosure, a bottom of the receiving portion has an oblique surface.
The present disclosure further provides an assembly method of an octal small form factor pluggable (OSFP), the octal small form factor pluggable (OSFP) having a base, a spacer and a lid, the assembly method comprising the steps of: positioning two terminals at two dent portions on a holder of the base, respectively; positioning the spacer in the holder; positioning two other terminals at two upper recess portions on the spacer, respectively; and covering the base with the lid.
In an embodiment of the present disclosure, the assembly method further comprises fastening the lid and the spacer to the holder.
According to the present disclosure, the octal small form factor pluggable (OSFP) 100 with the 4.0 specification is essentially dismantled into three constituent elements, namely the base, spacer and lid, such that the four optical fiber ports are fixed to the base. The four optical fiber ports do not have assembly tolerance therebetween, neither do the four optical fiber ports and base. The base and the spacer each clamp four terminals. Therefore, not only is it easy and convenient to assemble the octal small form factor pluggable (OSFP), but its constituent elements can also be easily produced and demolded.
To facilitate understanding of the object, characteristics and effects of this present disclosure, embodiments together with the attached drawings for the detailed description of the present disclosure are provided.
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In this embodiment, terminals T are LC terminals (LC receptacle) and are in substantially cylindrical shape, but the present disclosure is not limited thereto. In a variant embodiment, terminals T are any other types of terminals in any other shapes.
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According to the present disclosure, the octal small form factor pluggable (OSFP) 100 with the 4.0 specification is essentially dismantled into three constituent elements, namely the base 1, spacer 2 and lid 3, such that the four optical fiber ports 11, 12, 13, 14 are fixed to the base 1. The four optical fiber ports 11, 12, 13, 14 do not have assembly tolerance therebetween, neither do the four optical fiber ports 11, 12, 13, 14 and base 1. The base 1 and the spacer 2 each clamp four terminals. Therefore, not only is it easy and convenient to assemble the octal small form factor pluggable (OSFP) 100, but its constituent elements can also be easily produced and demolded.
According to the present disclosure, the assembly method of the octal small form factor pluggable (OSFP) 100 further comprises step S105: fastening the lid 3 and the spacer 2 to the holder 16. Referring to
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The receiving space S receives a circuit board or any other device. The end of the junction of the lid 3 and the receiving portion has a gap. The connection lines of terminals T can be pulled out of the end.
While the present disclosure has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the present disclosure set forth in the claims.