CN211123393U

CN211123393U - Different end face gradient refractive index optical fiber coupler

Info

Publication number: CN211123393U
Application number: CN202020027188.XU
Authority: CN
Inventors: 姚鑫; 刘再喜
Original assignee: Jinan Beijia Photoelectric Technology Co ltd
Current assignee: Jinan Beijia Photoelectric Technology Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-07-28
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses an optical fiber coupler with different end surface gradient refractive indexes, which comprises a gradient lens, wherein the front part of the gradient lens is provided with a laser chip, the front part of the laser chip is provided with a base, and the front part of the base is connected with a lead; a bracket is arranged on the outer side of the base, a boss is arranged at the rear part of the bracket, and a clamping column is clamped at the rear part of the boss; the front part of the clamping column is clamped with an annular conical surface through front clamping, the rear part of the clamping column is clamped with the annular conical surface through rear clamping, and an inner ring step is also arranged between the annular conical surface and the clamping column; a front thread is arranged in the rear clamp, the rear end of the gradient lens is connected with a capillary inner tube, the capillary inner tube is fixed through an inner sealing layer, a tailstock is arranged outside the inner sealing layer, and the middle of the inner sealing layer is connected with an optical fiber through a stainless steel inner sleeve; the acrylic sleeve is sleeved on the outer side of the stainless steel inner sleeve, the outer plastic sleeve is arranged on the outer side of the acrylic sleeve, and the rear portion of the outer plastic sleeve is provided with a rear thread. The coupler is small in size, low in loss and strong in applicability.

Description

Different end face gradient refractive index optical fiber coupler

Technical Field

The utility model belongs to the optical fiber processing field, concretely relates to different terminal surface gradient refractive index fiber coupler.

Background

The optical fiber coupler, also called splitter, connector, adapter, optical fiber flange, is an element for realizing optical signal splitting/combining or for extending optical fiber link, belongs to the field of optical passive element, and can be applied to telecommunication network, cable television network, user loop system and local area network. The optical fiber coupler is a device for detachable connection between optical fibers, and precisely butt-joints two end faces of the optical fibers so that light energy output by a transmitting optical fiber can be coupled into a receiving optical fiber to the maximum extent, and the optical fiber coupler is inserted into an optical link so as to minimize the influence on a system. Waveguide fiber couplers are generally devices having a Y-branch, which is used to divide the optical signal input by an optical fiber equally. When the open angle of the coupler branch is increased, light leaking into the cladding will increase to increase the excess loss, so the open angle is generally within 30 °, and therefore the length of the waveguide fiber coupler cannot be too short.

The existing optical fiber is often too large in volume due to the fact that the loss is not too high when the existing optical fiber needs to be met, coupling stability is poor, frequent adjustment is needed, the characteristic of optical fiber flexibility is lost, the optical fiber is easy to break, output power density is low, repeatability is poor, and the application range of the existing optical fiber is narrow.

SUMMERY OF THE UTILITY MODEL

The utility model provides a different terminal surface gradient refractive index fiber coupler, this equipment pass through the setting of gradient refractive index, can overcome the shortcoming of above prior art, reach and reduce the volume, and the loss is low, the wide efficiency of application range.

In order to achieve the above object, the utility model provides a following technical scheme: the optical fiber coupler with different end surfaces and gradient refractive indexes comprises a gradient lens, wherein a laser chip is arranged at the front part of the gradient lens, a base is arranged at the front part of the laser chip, and a lead is connected to the front part of the base; a bracket is arranged on the outer side of the base, a boss is arranged at the rear part of the bracket, and a clamping column is clamped at the rear part of the boss; the front part of the clamping column is clamped with an annular conical surface through front clamping, the rear part of the clamping column is clamped with the annular conical surface through rear clamping, and an inner ring step is further arranged between the annular conical surface and the clamping column; a front thread is arranged in the rear clamp, the rear end of the gradient lens is connected with a capillary inner tube, the capillary inner tube is fixed through an inner sealing layer, a tailstock is arranged outside the inner sealing layer, and the middle of the inner sealing layer is connected with an optical fiber through a stainless steel inner sleeve; the acrylic sleeve is sleeved on the outer side of the stainless steel inner sleeve, an outer plastic sleeve is arranged on the outer side of the acrylic sleeve, and a rear thread is arranged at the rear part of the outer plastic sleeve.

Preferably, a heat dissipation frame is arranged between the laser chip and the base.

Preferably, a sheath is arranged outside the rear thread.

Compared with the prior art, the beneficial effects of the utility model are that: the optical fiber coupler is small in size, low in loss, low in manufacturing cost and easy to process, effectively reduces attenuation in the optical fiber in the signal transmission process, enables the optical fiber to be bent more easily, and improves the application range and the applicability of the optical fiber. Miniaturization of the optical instrument is realized.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an overall view of the optical fiber coupler of the present invention;

in the figure: 1. gradient lens, 2, laser chip, 3, heat dissipation frame, 4, base, 5, wire, 6, support, 7, boss, 8, preceding joint, 9, the ring conical surface, 10, the card post, 11, back joint, 12, inner ring step, 13, preceding screw thread, 14, capillary inner tube, 15, interior seal coat, 16, tailstock, 17, stainless steel interior sleeve pipe, 18, optic fibre, 19, acrylic sleeve pipe, 20, outer plastic sleeve pipe, 21, back screw thread, 22, sheath.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1, the present invention provides a technical solution: an optical fiber coupler with different end surface gradient refractive indexes comprises a gradient lens 1, wherein a laser chip 2 is arranged at the front part of the gradient lens 1, a base 4 is arranged at the front part of the laser chip, and a lead 5 is connected to the front part of the base; a bracket 6 is arranged on the outer side of the base 4, a boss 7 is arranged at the rear part of the bracket, and a clamping column 10 is clamped at the rear part of the boss; the front part of the clamping column is clamped with an annular conical surface 9 through a front clamping joint 8, the rear part of the clamping column is clamped with the annular conical surface through a rear clamping joint 11, and an inner ring step 12 is further arranged between the annular conical surface and the clamping column; a front thread 13 is arranged in the rear clamp 11, the rear end of the gradient lens is connected with a capillary inner tube 14, the capillary inner tube is fixed through an inner sealing layer 15, a tail seat 16 is arranged outside the inner sealing layer, and the middle of the inner sealing layer is connected with an optical fiber 18 through a stainless steel inner sleeve 17; the stainless steel inner sleeve outside has cup jointed ya keli sleeve 19, and the yakeli sleeve outside is provided with outer plastic cannula 20, and outer plastic cannula rear portion is provided with back screw thread 21. A heat dissipation frame 3 is arranged between the laser chip 2 and the base 4. A sheath 22 is arranged outside the rear thread 21.

Example 1:

an optical fiber coupler with different end surface gradient refractive indexes comprises a gradient lens 1, wherein a laser chip 2 is arranged at the front part of the gradient lens 1, a base 4 is arranged at the front part of the laser chip, and a lead 5 is connected to the front part of the base; a bracket 6 is arranged on the outer side of the base 4, a boss 7 is arranged at the rear part of the bracket, and a clamping column 10 is clamped at the rear part of the boss; the front part of the clamping column is clamped with an annular conical surface 9 through a front clamping joint 8, the rear part of the clamping column is clamped with the annular conical surface through a rear clamping joint 11, and an inner ring step 12 is further arranged between the annular conical surface and the clamping column; a front thread 13 is arranged in the rear clamp 11, the rear end of the gradient lens is connected with a capillary inner tube 14, the capillary inner tube is fixed through an inner sealing layer 15, a tail seat 16 is arranged outside the inner sealing layer, and the middle of the inner sealing layer is connected with an optical fiber 18 through a stainless steel inner sleeve 17; the stainless steel inner sleeve outside has cup jointed ya keli sleeve 19, and the yakeli sleeve outside is provided with outer plastic cannula 20, and outer plastic cannula rear portion is provided with back screw thread 21.

Example 2:

an optical fiber coupler with different end surface gradient refractive indexes comprises a gradient lens 1, wherein a laser chip 2 is arranged at the front part of the gradient lens 1, a base 4 is arranged at the front part of the laser chip, and a lead 5 is connected to the front part of the base; a bracket 6 is arranged on the outer side of the base 4, a boss 7 is arranged at the rear part of the bracket, and a clamping column 10 is clamped at the rear part of the boss; the front part of the clamping column is clamped with an annular conical surface 9 through a front clamping joint 8, the rear part of the clamping column is clamped with the annular conical surface through a rear clamping joint 11, and an inner ring step 12 is further arranged between the annular conical surface and the clamping column; a front thread 13 is arranged in the rear clamp 11, the rear end of the gradient lens is connected with a capillary inner tube 14, the capillary inner tube is fixed through an inner sealing layer 15, a tail seat 16 is arranged outside the inner sealing layer, and the middle of the inner sealing layer is connected with an optical fiber 18 through a stainless steel inner sleeve 17; the stainless steel inner sleeve outside has cup jointed ya keli sleeve 19, and the yakeli sleeve outside is provided with outer plastic cannula 20, and outer plastic cannula rear portion is provided with back screw thread 21. A heat dissipation frame 3 is arranged between the laser chip 2 and the base 4.

Example 3:

an optical fiber coupler with different end surface gradient refractive indexes comprises a gradient lens 1, wherein a laser chip 2 is arranged at the front part of the gradient lens 1, a base 4 is arranged at the front part of the laser chip, and a lead 5 is connected to the front part of the base; a bracket 6 is arranged on the outer side of the base 4, a boss 7 is arranged at the rear part of the bracket, and a clamping column 10 is clamped at the rear part of the boss; the front part of the clamping column is clamped with an annular conical surface 9 through a front clamping joint 8, the rear part of the clamping column is clamped with the annular conical surface through a rear clamping joint 11, and an inner ring step 12 is further arranged between the annular conical surface and the clamping column; a front thread 13 is arranged in the rear clamp 11, the rear end of the gradient lens is connected with a capillary inner tube 14, the capillary inner tube is fixed through an inner sealing layer 15, a tail seat 16 is arranged outside the inner sealing layer, and the middle of the inner sealing layer is connected with an optical fiber 18 through a stainless steel inner sleeve 17; the stainless steel inner sleeve outside has cup jointed ya keli sleeve 19, and the yakeli sleeve outside is provided with outer plastic cannula 20, and outer plastic cannula rear portion is provided with back screw thread 21. A sheath 22 is arranged outside the rear thread 21.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A different end-face gradient-index fiber coupler comprising a gradient lens (1), characterized in that: the front part of the gradient lens (1) is provided with a laser chip (2), the front part of the laser chip is provided with a base (4), and the front part of the base is connected with a lead (5); a support (6) is arranged on the outer side of the base (4), a boss (7) is arranged at the rear part of the support, and a clamping column (10) is clamped at the rear part of the boss; the front part of the clamping column is clamped with an annular conical surface (9) through a front clamping (8), the rear part of the clamping column is clamped with the annular conical surface through a rear clamping (11), and an inner ring step (12) is further arranged between the annular conical surface and the clamping column; a front thread (13) is arranged in the rear clamping joint (11), the rear end of the gradient lens is connected with a capillary inner tube (14), the capillary inner tube is fixed through an inner sealing layer (15), a tail seat (16) is arranged outside the inner sealing layer, and the middle of the inner sealing layer is connected with an optical fiber (18) through a stainless steel inner sleeve (17); the outer side of the stainless steel inner sleeve is sleeved with an acrylic sleeve (19), the outer side of the acrylic sleeve is provided with an outer plastic sleeve (20), and the rear part of the outer plastic sleeve is provided with a rear thread (21).

2. A differential end-face-gradient-index fiber coupler according to claim 1, wherein: a heat dissipation frame (3) is arranged between the laser chip (2) and the base (4).

3. A differential end-face-gradient-index fiber coupler according to claim 1 or 2, wherein: and a sheath (22) is arranged on the outer side of the rear thread (21).