CN203324528U

CN203324528U - Tail-fiber-type coaxial detector component

Info

Publication number: CN203324528U
Application number: CN201320436252XU
Authority: CN
Inventors: 张才生; 林承城
Original assignee: XIAMEN BELY COMMUNICATION EQUIPMENT CO Ltd
Current assignee: XIAMEN BELY COMMUNICATION EQUIPMENT CO Ltd
Priority date: 2013-07-22
Filing date: 2013-07-22
Publication date: 2013-12-04
Anticipated expiration: 2023-07-22

Abstract

The utility model relates to a coaxial optical receiving device, and discloses a tail-fiber-type coaxial detector component which includes a tail fiber, a transition block and a PD pipe fitting. A tail fiber coupling end includes an insertion core and a tail handle for fixing the insertion core; the tail handle comprises a base and an upper cylinder which are formed by press casting in an integrated manner; the center shaft of the tail handle is a through hole; the insertion core penetrates through the through hole and then extend outside an end surface of the tail handle; the transition block is a tube body, and an outside portion of the transition block is a step-shaped cylinder; one end of the transition block is connected with an end surface of the base of the tail handle, and the other end of the transition block is connected with an end surface of the PD pipe fitting; an portion of the insertion core extending outside the end surface of the tail handle is inserted into the tube body of the transition block; the PD pipe fitting, the transition block and the tail handle are sequentially welded and fixed; and signal light transmitted by the tail fiber is outputted through the end surface of the insertion core, and is further converged to a PD chip of the PD pipe fitting through a lens of the PD pipe fitting. Through improving the structure of the metal part and through the press casting molding of the tail handle and the transition block, the processing cost of metal part is reduced and at the same time the coupling efficiency is improved; and the production efficiency is also improved while the production cost is reduced.

Description

A kind of tail fiber type coaxial detector assembly

Technical field

The utility model relates to a kind of coaxial optical receiver part, relates in particular to a kind of tail fiber type coaxial detector assembly.

Background technology

Along with the development of optical communication technique, the application in telecommunication, field of data networks makes to communicate by letter and has obtained considerable progress with extremely low-loss optical fiber to have enormous bandwidth.The PIN detector, as light receiving element, plays an important role in optical communication.In the fiber-to-the-home communication epoch, not only require the client transceiver that reliable performance will be arranged, more require it to there is inexpensive advantage, and one of important device wherein, as the PIN detector assembly of optical receiver, also require constantly to reduce costs.Existing PIN detector, in coupling process, Z-direction (along optical propagation direction) needs to adjust on the one hand, and the coupling consistance is poor, and coupling efficiency is low, thereby causes production efficiency to be difficult to improve; On the other hand, its various metalworks used, as high to accuracy requirement as tail optical fiber caudal peduncle, transition block etc., the metalwork processing cost is difficult to reduce.

Summary of the invention

For overcoming the problems referred to above, the utility model proposes a kind of tail fiber type coaxial detector assembly, improved metal component structure, effectively reduce the metalwork cost, and greatly improved coupling efficiency.

For achieving the above object, the technical scheme that the utility model proposes is: a kind of tail fiber type coaxial detector assembly, comprise tail optical fiber, transition block and PD pipe fitting, the pigtail coupling end comprises lock pin and the fixing caudal peduncle of lock pin, described caudal peduncle comprises pedestal and upper cylinder, and the two presses one-body molded by casting, and the caudal peduncle central shaft is to being a through hole, described lock pin is arranged in through hole, extends the caudal peduncle end face; Described transition block is a body, and outside is the step cylinder, and an end and caudal peduncle pedestal end face join, and the other end and PD pipe fitting end face join; The part that described lock pin extends the caudal peduncle end face is inserted in the body of transition block; PD pipe fitting, transition block and caudal peduncle are welded and fixed successively, and the flashlight of tail optical fiber Optical Fiber Transmission is exported through insertion core end face, by the lens of PD pipe fitting, are converged on the PD chip of PD pipe fitting.

Further, described transition block equates with the lock pin external diameter near the internal diameter of tube body of caudal peduncle one end, and the internal diameter of tube body of close PD pipe fitting one end of transition block is greater than the lock pin external diameter.

Further, described PD pipe fitting comprises TO-CAN and welding body, and TO-CAN comprises base, PD chip and, with the encapsulation pipe cap of lens, the welding body covers in outside the encapsulation pipe cap, with base, is welded and fixed; Welding body end face docks and is welded and fixed with the transition block end face.

Further, described transition block height coordinates with described lock pin length, makes insertion core end face be positioned at the optimum coupling position.

Further, described optimum coupling position is the mirror image place of PD chip about PD pipe fitting lens.

Further, described caudal peduncle pedestal is square, with transition block end face inclined weld, is fixedly connected with.

Further, described caudal peduncle pedestal is cylindrical, and its external diameter equates with transition block upper end external diameter, is fixedly connected with the transition block butt welding.

The beneficial effects of the utility model: by improving metal component structure, adopt caudal peduncle and the transition block of die casting moulding, reduced the processing cost of metalwork, improved coupling efficiency simultaneously, when reducing product cost, also improved production efficiency.

The accompanying drawing explanation

Fig. 1 is the utility model detector assembly STRUCTURE DECOMPOSITION schematic diagram;

Fig. 2 is the utility model detector embodiment mono-coupled structure cut-open view;

Fig. 3 is the utility model embodiment mono-caudal peduncle left view;

Fig. 4 is the utility model detector embodiment bis-coupled structure cut-open views;

Fig. 5 is the utility model embodiment bis-caudal peduncle left views.

Reference numeral: 1, tail optical fiber; 11, caudal peduncle; 111, pedestal; 112, upper cylinder; 113, through hole; 12, lock pin; 2, transition block; 3, PD pipe fitting; 31, base; 32, welding body; 33, lens; 34, encapsulation pipe cap.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described further.

As shown in Figure 1, tail fiber type coaxial detector assembly of the present utility model, comprise tail optical fiber 1, transition block 2 and PD pipe fitting 3, and tail optical fiber 1 coupled end comprises lock pin 12 and the fixing caudal peduncle 11 of lock pin 12.Wherein, caudal peduncle 11 comprises pedestal 111 and upper cylinder 112, and the two presses one-body molded by casting, and caudal peduncle 11 central shafts are to being a through hole 113, and lock pin 12 is arranged in through hole 113, extends caudal peduncle 11 end faces; Transition block 2 is a body, and outside is the step cylinder, and an end and caudal peduncle 11 pedestal 111 end faces join, and the other end and PD pipe fitting 3 end faces join; The part that lock pin 12 extends caudal peduncle 11 end faces is inserted in the body of transition block 2; PD pipe fitting 3, transition block 2 and caudal peduncle 11 are welded and fixed successively, and the flashlight of tail optical fiber 1 Optical Fiber Transmission is through lock pin 12 end faces outputs, by the lens 33 of PD pipe fitting 3, are converged on the PD chip of PD pipe fitting 3.During coupling, lock pin 12 is stretched in transition block 2 bodys, by regulating coupling cramp, make caudal peduncle 11 pedestal 111 end faces near transition block 2 end faces, then by rotation caudal peduncle 11 directions and Level tune PD pipe fitting 3 positions, make lock pin 12 end faces be positioned at the optimum coupling position, obtain maximum coupling efficiency, then PD pipe fitting 3, transition block 2 and caudal peduncle 11 are welded and fixed successively, recheck the coupling parameter of detector assembly after welding, if coupling parameter welding relatively departs from before larger, again finely tune PD pipe fitting 3 positions, obtain better coupling parameter.Wherein, transition block 2 height coordinate with lock pin 12 length, make lock pin 12 end faces be positioned at the optimum coupling position, and the PD chip, about the mirror image place of PD pipe fitting 3 lens, makes the flashlight of lock pin 12 end face outputs just converge on the PD chip through lens 33.

Concrete embodiment as shown in Figures 2 and 3, PD pipe fitting 3 comprises TO-CAN and welding body 32, TO-CAN comprises base 31, PD chip and, with the encapsulation pipe cap 34 of lens 33, welding body 32 covers in outside encapsulation pipe cap 34, with base 31, is welded and fixed; Welding body 32 end faces dock and are welded and fixed with transition block 2 end faces.Caudal peduncle 11 pedestals 111 are square, with transition block 2 end face inclined welds, are fixedly connected with, and the welding body 32 end face butt welding of transition block 2 other ends and PD pipe fitting 3 are fixed.

Embodiment bis-as shown in Figures 4 and 5, different from embodiment mono-, caudal peduncle 11 pedestals 111 are cylindrical, its external diameter equates with transition block 2 upper end external diameters, is fixedly connected with transition block 2 butt welding.

In the various embodiments described above, transition block 2 equates with lock pin 12 external diameters near the internal diameter of tube body of caudal peduncle 11 1 ends, and transition block 2 is greater than lock pin 12 external diameters near the internal diameter of tube body of PD pipe fitting 3 one ends, is convenient to the adjusting that is coupled.The utility model, by improving metal component structure, adopts caudal peduncle and the transition block of die casting moulding, has reduced the processing cost of metalwork, has improved coupling efficiency simultaneously, when reducing product cost, has also improved production efficiency.

Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; the various variations of in the form and details the utility model being made, be protection domain of the present utility model.

Claims

1. a tail fiber type coaxial detector assembly, comprise tail optical fiber, transition block and PD pipe fitting, the pigtail coupling end comprises lock pin and the fixing caudal peduncle of lock pin, it is characterized in that: described caudal peduncle comprises pedestal and upper cylinder, the two presses one-body molded by casting, the caudal peduncle central shaft is to being a through hole, and described lock pin is arranged in through hole, extends the caudal peduncle end face; Described transition block is a body, and outside is the step cylinder, and an end and caudal peduncle pedestal end face join, and the other end and PD pipe fitting end face join; The part that described lock pin extends the caudal peduncle end face is inserted in the body of transition block; PD pipe fitting, transition block and caudal peduncle are welded and fixed successively, and the flashlight of tail optical fiber Optical Fiber Transmission is exported through insertion core end face, by the lens of PD pipe fitting, are converged on the PD chip of PD pipe fitting.

2. tail fiber type coaxial detector assembly as claimed in claim 1 is characterized in that: described transition block equates with the lock pin external diameter near the internal diameter of tube body of caudal peduncle one end, and the internal diameter of tube body of close PD pipe fitting one end of transition block is greater than the lock pin external diameter.

3. tail fiber type coaxial detector assembly as claimed in claim 1, it is characterized in that: described PD pipe fitting comprises TO-CAN and welding body, TO-CAN comprises base, PD chip and, with the encapsulation pipe cap of lens, the welding body covers in outside the encapsulation pipe cap, with base, is welded and fixed; Welding body end face docks and is welded and fixed with the transition block end face.

4. tail fiber type coaxial detector assembly as claimed in claim 1, it is characterized in that: described transition block height coordinates with described lock pin length, makes insertion core end face be positioned at the optimum coupling position.

5. tail fiber type coaxial detector assembly as claimed in claim 4, it is characterized in that: described optimum coupling position is the mirror image place of PD chip about PD pipe fitting lens.

6. tail fiber type coaxial detector assembly as claimed in claim 1, it is characterized in that: described caudal peduncle pedestal is square, with transition block end face inclined weld, is fixedly connected with.

7. tail fiber type coaxial detector assembly as claimed in claim 1, it is characterized in that: described caudal peduncle pedestal is cylindrical, its external diameter equates with transition block upper end external diameter, is fixedly connected with the transition block butt welding.