CN2771881Y

CN2771881Y - WDM packaging structure

Info

Publication number: CN2771881Y
Application number: CNU2005200690889U
Authority: CN
Inventors: 吴砺; 赵武丽; 蔡宏铭; 施向华
Original assignee: Photop Technologies Inc
Current assignee: Photop Technologies Inc
Priority date: 2005-02-02
Filing date: 2005-02-02
Publication date: 2006-04-12
Anticipated expiration: 2015-02-02

Abstract

The utility model discloses a WDM packaging structure which comprises a double optical fiber collimator, a single fiber collimator, WDM diaphragms and glass pipes, wherein three glass pipes are arranged between the double optical fiber collimator and the single fiber collimator, and end surfaces of glass sleeve pipes of the double optical fiber collimator and the single fiber collimator are sphere surfaces. One end surface of two glass pipes is connected with the collimator glass sleeve pipes in a concave and convex sphere surface, and two end surfaces of which the middle are connected with the two glass pipes are planes. The WDM diaphragms are glued by adhesive on the end surfaces of the glass pipes, the diameter of the central glass pipe is larger or less than that of the left glass pipe and the right glass pipe, and every two glass pipes are glued by the adhesive. An adhesive layer can be kept in a thin and uniform state by the structure. Thus, the rapid adhesion between every two glass pipes, and the temperature stability of a light path of an optical device is guaranteed.

Description

A kind of WDM encapsulating structure

Affiliated technical field

The utility model relates to the optical-fibre communications field optical passive component, especially a kind of WDM encapsulating structure.

Background technology

WDM is widely used among the optical-fibre communications as one of primary element of optical passive component, the most general at present WDM encapsulating structure as shown in Figure 1, wherein 101 is double optical fiber head, 102 is GRIN Lens, 103 is the WDM diaphragm, 104 is metal tube, and 105 is glass tube, and 106 is two optical fiber cables, 107 scolding tin, 108 is glass tube, and 109 is metal tube, and 110 is lenticule, 111 is the single fiber head, 112 is optical fiber cable, and 113 is scolding tin, and 114 is glue, 115 is glue, 116 is metal tube, and metal construction is main encapsulating structure owing to adopt glue like this, scolding tin, glass mixes, so temperature performance is relatively poor.

In recent years, the structure that adopts the glass tube bonding is arranged, see Chinese patent CN2541857Y (as shown in Figure 2), among the figure, 201 is double optical fiber head, and 202 is lenticule, 203 is glass tube, 204 is glass tube, and 203,204 have and are respectively the identical concavo-convex sphere end face of R value, and 205 is the WDM diaphragm, 206 is glass tube, 207 is glass tube, and 208 is glass tube, and 207,208 also have the identical concavo-convex sphere end face of R value respectively, 209 is lenticule, 210 is the single fiber head, and 211 is optical fiber cable, and 212,213,214,215 is glue-line.This structure has been introduced the glass bead articulation structure, but the articulation structure of its translation, and it is all even thinner to make light path regulate between each glass tube of back glue line, thereby obtains temperature performance preferably.But it is very difficult that the greatest problem of this structure is the glue line uniform thickness, thereby make manufacturing efficient lower, consuming time longer, and when glue-line was inhomogeneous, the temperature performance of its device difficulty reached optimum condition.

The utility model content

The utility model purpose is to provide a kind of simple in structure, WDM encapsulating structure that temperature performance is good.

For achieving the above object, the utility model adopts following structure: a kind of WDM encapsulating structure, comprise double-fiber collimator, the single fiber collimating apparatus, WDM diaphragm and glass tube, three glass tubes are arranged between double-fiber collimator and the single fiber collimating apparatus, and double-fiber collimator and single fiber collimating apparatus glass bushing end face are sphere, wherein: become concavo-convex sphere to join between the end face that two glass tubes are arranged and collimating apparatus glass bushing, middle glass tube both ends of the surface of joining with two glass tubes are for flat, the WDM diaphragm is by being adhesive in the glass tube end face, and the diameter of two glass tubes about the diameter of intermediate glass pipe is greater than or less than, between each glass tube by glue bond.

Said structure can make glue-line keep thin and uniform state, thereby can realize the bonding between each glass tube fast, guarantees optical element light path, temperature stability.

Description of drawings

Fig. 1 is present general WDM encapsulating structure.

Fig. 2 is the structure of existing glass tube bonding.

Fig. 3 is the utility model structural representation.

Embodiment

Among Fig. 3,301 is double optical fiber head, and 303 is lenticule, 302 glass bushings, 301,302 and 303 constitute double-fiber collimator 30,304,305,306 is glass tube, and 307 is the WDM diaphragm, and 308 is glass bushing, 309 is lenticule, 310 is optical fiber head, and 308,309 and 310 formation single fiber collimating apparatuss 31,311,312 are glue.

Among Fig. 3, glass bushing 302 becomes a pair of concavo-convex sphere to join with glass tube 304 1 end faces, and glass tube 306 and glass bushing 308 join for a pair of concavo-convex sphere, and WDM diaphragm 307 is bonded on the glass tube 305.

Glass tube 305 translation automatically in the utility model, like this when glass tube 305 and WDM diaphragm 307 are adjusted to double-fiber collimator 30 best reflection positions, translation double-fiber collimator 30, can eliminate the gap between glass bushing 302 and glass tube 304,305 automatically, make glue-line 311 keep thin and uniform state, thereby can realize the bonding between glass bushing 302 and the glass tube 304,305 fast, guarantee the optical element stability of layout simultaneously.

Among Fig. 3, after change WDM diaphragm 307 length, also can be bonded near glass tube 304 1 end faces.

Claims

1, a kind of WDM encapsulating structure, comprise double-fiber collimator, the single fiber collimating apparatus, the WDM diaphragm, three glass tubes are arranged between double-fiber collimator and the single fiber collimating apparatus, and double-fiber collimator and single fiber collimating apparatus glass bushing end face are sphere, it is characterized in that: become concavo-convex sphere to join between the end face that two glass tubes are arranged and collimating apparatus glass bushing, middle glass tube both ends of the surface of joining with two glass tubes are the plane, the WDM diaphragm is by being adhesive in the glass tube end face, and the diameter of two glass tubes about the diameter of intermediate glass pipe is greater than or less than, between each glass tube by glue bond.