Naked fine formula optical branching device
Technical field
the utility model relates to a kind of optical branching device, relates in particular to a kind of naked fine formula optical branching device.
Background technology
optical branching device is that optical fiber inserts indispensable device, and its effect is mainly played input optical power demultiplexing luminous power is exported.
existing optical branching device generally all includes box body, box body cover plate and planar optical waveguide splitter (PLC); Also be provided with input port and output port on the said casing; Said input optical fibre stretches into box body through input port and is connected with the input end of optical branching device module, and said output optical fibre stretches into box body through output port and is connected with the output terminal of optical branching device module.Because the device of unmatchful this fiber orientation in the optical branching device, therefore easy fracture when optical fiber is bent or be applied in pulling force.
Summary of the invention
the utility model purpose is: a kind of naked fine formula optical branching device is provided; It establishes the fiber array that is used for the second bare fibre section location of the first bare fibre section of coated fiber and fibre ribbon near the position of PLC chip in housing, can prevent that optical fiber is bent or rupture when being applied in pulling force.
The technical scheme of
the utility model is: a kind of naked fine formula optical branching device; Comprise housing, be positioned at PLC chip, coated fiber and at least two fibre ribbons of housing; Also be provided with on the said box body and supply coated fiber input port that wears and the output port that supplies fibre ribbon to wear; Said coated fiber the inner has the first bare fibre section; The end of the first bare fibre section is connected with the input end of PLC chip; Said fibre ribbon the inner has a plurality of second bare fibre sections, and the end of the second bare fibre section is connected with the output terminal of PLC chip, and the position near the PLC chip in the said housing is respectively equipped with the fiber array that is used for the first bare fibre section and second bare fibre section location.
said fiber array comprises substrate and cover plate; The upper surface of said substrate has the locating slot that supplies the first bare fibre section or the second bare fibre section to be embedded; Said cover plate is pressed in the first bare fibre section or the second bare fibre section in the locating slot, and the intersection that is coated with the interval and the first bare fibre section of said coated fiber, the intersection that is coated with the interval and the second bare fibre section of fibre ribbon pass through silica stationary respectively between aforesaid substrate and cover plate.
The U type stainless steel lower cover that
said housing is made progress by the U type stainless steel upper cover that Open Side Down and opening is pegged graft and is formed, and these housing both ends are provided with rubber plug respectively, and said input port and output port are formed at respectively on two rubber plugs.
said PLC chip passes through silica stationary in enclosure interior.
The utility model has the advantages that:
1. the utility model are provided with the fiber array that is used for the second bare fibre section location of the first bare fibre section of coated fiber and fibre ribbon near the position of PLC chip in housing, can prevent that optical fiber is bent or rupture when being applied in pulling force.
. the utility model is provided with respectively at said housing both ends and supplies coated fiber and fibre ribbon to wear rubber plug; The setting of rubber plug; Can improve the sealing of naked fine formula optical branching device greatly, also coated fiber and fibre ribbon played certain positioning action simultaneously.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Fig. 1 is the cut-open view of the utility model;
Fig. 2 is the vertical view of the utility model;
Fig. 3 is that the A of Fig. 1 is to synoptic diagram;
Fig. 4 is that the B of Fig. 1 is to synoptic diagram;
Fig. 5 is the sectional view of the right side fiber array among Fig. 1.
Wherein: 1 housing; 11 input ports; 12 output ports; 13 U type stainless steel upper cover; 14 U type stainless steel lower covers; 15 rubber plugs;
2 PLC chips;
3 coated fibers; 31 first bare fibre sections;
4 fibre ribbons; 41 second bare fibre sections;
5 fiber arrays; 51 substrates; 52 cover plates; 53 silica gel;
6 silica gel.
Embodiment
embodiment: shown in Fig. 1 is extremely shown in Figure 5; A kind of naked fine formula optical branching device; Comprise housing 1, be fixed on the inner PLC chip 2 of housing 1, coated fiber 3 and at least two fibre ribbons 4 through silica gel 6; Also be provided with on the said box body 1 and supply coated fiber 3 input port 11 that wears and the output port 12 that supplies fibre ribbon 4 to wear; The end that said coated fiber 3 the inners have the first bare fibre section, 31, the first bare fibre sections 31 is connected with the input end of PLC chip 2, and said fibre ribbon 4 the inners have a plurality of second bare fibre sections 41; The end of the second bare fibre section 41 is connected with the output terminal of PLC chip 2, and the position near PLC chip 2 in the said housing 1 is respectively equipped with the fiber array 5 that is used for the first bare fibre section 31 and the second bare fibre section, 41 location.
said fiber array 5 comprises substrate 51 and cover plate 52; The upper surface of said substrate 51 has the V-arrangement locating slot 511 that supplies the first bare fibre section 31 or the second bare fibre section 41 to be embedded; Said cover plate 52 is pressed in the first bare fibre section 31 or the second bare fibre section 41 in the locating slot 511, and the intersection that is coated with the interval and the first bare fibre section 31 of said coated fiber 3, the intersection that is coated with the interval and the second bare fibre section 41 of fibre ribbon 4 are fixed between aforesaid substrate 51 and the cover plate 52 through silica gel 53 respectively.
In
present embodiment, said coated fiber 3 is one, and promptly its inner has 1 first bare fibre section 31, and said fibre ribbon 4 has four, and every be 8 cores, and promptly the inner of four fibre ribbons has 32 second bare fibre sections 41 altogether.Accordingly, only have a V-arrangement locating slot 511 on the substrate 51 of said left side fiber array 5, then have 32 V-arrangement locating slots 511 on the substrate 51 of right side fiber array 5.
said housing 1 is formed by U type stainless steel upper cover 13 that Open Side Down and U type stainless steel lower cover 14 grafting that opening makes progress; These housing 1 both ends are provided with rubber plug 15 respectively, and said input port 11 is formed at respectively on two rubber plugs 15 with output port 12.
the utility model is provided with the fiber array 5 that is used for the second bare fibre section, 41 location of the first bare fibre section 31 of coated fiber 3 and fibre ribbon 4 near the position of PLC chip 2 in housing 1, can prevent that optical fiber is bent or rupture when being applied in pulling force.
Only be the concrete exemplary applications of the utility model more than
, the protection domain of the utility model is not constituted any limitation.Except that the foregoing description, the utility model can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.