CN202916459U - Multi-fiber collimator - Google Patents
Multi-fiber collimator Download PDFInfo
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- CN202916459U CN202916459U CN 201220620024 CN201220620024U CN202916459U CN 202916459 U CN202916459 U CN 202916459U CN 201220620024 CN201220620024 CN 201220620024 CN 201220620024 U CN201220620024 U CN 201220620024U CN 202916459 U CN202916459 U CN 202916459U
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- optical fiber
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Abstract
The utility model relates to the field of optical fiber communication and discloses a multi-fiber collimator. The multi-fiber collimator includes multiple optical fiber heads and a lens. Output end faces of the multiple optical fiber heads are wedge-angle faces. The lens is provided with an equivalent focal plane. Optical paths from the wedge-angle faces of the multiple optical fiber heads to the equivalent focal plane of the lens are equal. Through rotating the angles of the multiple optical heads or increasing the number of the wedge-angle optical elements, parameters of the multiple optical fiber heads, the wedge-angle optical elements and the lens are adjusted for making the optical paths from the output end faces of the multiple optical fiber heads to the equivalent focal plane of the collimating lens to be the same, so that outgoing light beams of the multiple optical fiber heads are focused on the same point. Therefore, the multi-fiber collimator with the same insertion loss of the light beams in different paths is realized with low return loss and a simple structure.
Description
Technical field
The utility model relates to optical-fibre communications field, relates in particular to a kind of multiple optical fiber collimating.
Background technology
Collimating apparatus is mainly used in the Laser beam propagation system.In all optical passive components.Optical fiber collimator is one of optical device the most basic in optical fiber telecommunications system and the optical fiber sensing system, and its purposes is that the Gaussian beam of transmitting in the optical fiber is collimated, to improve the coupling efficiency between optical fiber and the optical fiber.Collimating apparatus is mainly used in the body piece type optical passive component, and so-called body piece type optical passive component refers to the optical passive component that forms with discrete component, and it is combined to be also referred to as discrete component.Because the passive device of this type can not directly link to each other with optical fiber, so need to pass through coupling element, collimating apparatus is one of most important coupled apparatus, as optical fiber output is coupled into a detector, perhaps the pair of alignment device is used for light beam expansion system, and for example the optical fiber of gadget is to coupling fiber, and these all need collimator system.The collimation of basic all light that is used for Fiber Optical Communication System all is to adopt collimating apparatus to finish in the world.Collimating apparatus is actually an optical fiber head and plays the packaging body of the lens of collimating effect.
Such as Fig. 1, in order to reduce the return loss of collimating apparatus, usually the output end face of optical fiber head is made as the inclined-plane with wedge angle in actual the use, rather than the plane vertical with optical axis, this is just so that in the situation of many optical fiber inputs, the multi-beam of many optical fiber heads 1 output is unequal to the light path of the equivalent focal plane B of lens 2, from and so that collimating apparatus is inconsistent for the Insertion Loss of each light beam.
Summary of the invention
For the problems referred to above, the utility model proposes a kind of multiple optical fiber collimating, return loss is low, simultaneously each light beam has consistent Insertion Loss, and simple in structure, cost is low.
For achieving the above object, the technical solution of the utility model is: a kind of multiple optical fiber collimating, comprise many optical fiber heads and lens, described many optical fiber heads output end face is the wedge edged surface, described lens have an equivalent focal plane, and the wedge edged surface of described many optical fiber heads is to the equivalent optical path of described lens equivalent focal plane.
Further, the central shaft of the described collimating apparatus of axis runout of described many optical fiber heads.
Further, comprise that also one is used for the eccentric pipe box of fixing many optical fiber heads.
Further, also comprise a fixed cover, described many optical fiber heads and lens are located in the fixed cover
Further, also comprise an angle of wedge optical element, be located between many optical fiber heads and the lens.
Further, described many optical fiber heads and angle of wedge optical element close proximity perhaps have the space between the two.
Further, described lens are non-spherical lens, plano-convex lens or C-lens lens.
Further, the fiber end face of described polarization maintaining optical fibre is the lower coupling angles of return loss such as 0 ° or oblique 8 °.
The beneficial effects of the utility model are: by angle or the increase angle of wedge optical element that rotates many optical fiber heads, adjust many optical fiber heads, angle of wedge optical element and lens three's parameter, make many optical fiber heads output end face have equal light path to collimation lens equivalence focal plane, thereby so that the emergent light of many optical fiber heads focuses on same point, with the consistent multiple optical fiber collimating of the Insertion Loss of realizing each road light beam, and return loss is low, simple in structure.
Description of drawings
Fig. 1 is optical fiber collimator structure synoptic diagram commonly used;
Fig. 2 is the utility model embodiment one structural representation;
Fig. 3 is the utility model embodiment two structural representations;
Fig. 4 is the utility model embodiment three structural representations.
Reference numeral: 1, many optical fiber heads; 2, lens; 3, angle of wedge optical element; 4, eccentric pipe box; 5, fixed cover; A, wedge edged surface; B, equivalent focal plane; C, central shaft.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
The utility model by adjusting many optical fiber heads 1 angle or increase by an angle of wedge optical element 3 be consistent to the light path of lens 2 equivalent focal plane B so that emergent light is respectively restrainted at many optical fiber heads 1 output end face place, to produce the consistent multiple optical fiber collimating of each light beam Insertion Loss.Concrete, this multiple optical fiber collimating comprises many optical fiber heads 1 and lens 2, and many optical fiber head 1 output end faces are wedge edged surface A, and lens 2 have an equivalent focal plane B.Wherein, the wedge edged surface A of many optical fiber heads 1 is to the equivalent optical path of described lens 2 equivalent focal plane B.The following embodiment of specific implementation.
Be illustrated in figure 2 as the utility model embodiment one, what lens 2 adopted among this embodiment is the C-lens lens, and its planar ends and vertical plane have angle theta=8 °, thereby so that its equivalent focal plane B also has an angle β with vertical plane.And the wedge edged surface A of many optical fiber heads 1 usually also has 8 ° angle with vertical plane, so it respectively restraints emergent light each is unequal to the light path of equivalent focal plane B, thereby does not also wait to the light path of the focus of lens 2.This embodiment is by adjusting the angle of many optical fiber heads 1, the central shaft C of its this collimating apparatus of axis runout, so that the angle α=β of its wedge edged surface A and vertical plane, namely so that the wedge edged surface A of many optical fiber heads 1 is parallel with the equivalent focal plane B of lens 2, thereby so that each light beam has identical light path after the wedge edged surface A output of many optical fiber heads 1, thereby realize the optical fiber collimator that each light beam Insertion Loss is consistent to the equivalent focal plane B of lens 2.
Be illustrated in figure 3 as embodiment two of the present utility model, what adopt among this embodiment is non-spherical lens, for making collimator structure compacter, this embodiment arranges an angle of wedge optical element 3 between many optical fiber heads 1 and lens 2, by the selection to angle of wedge optical element 3 parameters, also can so that each light beam of many optical fiber heads 1 wedge edged surface A outgoing to the actual equivalent optical path between the lens 2 equivalent focal plane B, can realize the optical fiber collimator that each light beam Insertion Loss is consistent equally, and can effectively compress the light path size, so that the structure of collimating apparatus is compacter.Among this embodiment, angle of wedge optical element 3 can closely be connected with many optical fiber heads 1 by optical cement or modes such as in-depth optical cement etc., also can be and many optical fiber heads 1 between have certain interval.Equally, angle that can be by adjusting many optical fiber heads 1 is adjusted the light path of multiple beam together in conjunction with this angle of wedge optical element 3, with further compression light path size; Also can not adjust the angle of many optical fiber heads 1, and only adjust the light path of multiple beam by the selection of angle of wedge optical element 3.
As shown in Figure 4, be embodiment four of the present utility model, this embodiment combines simultaneously the angle of adjusting many optical fiber heads 1 and increases the light path that angle of wedge optical element 3 is adjusted multiple beam, with further compression light path size.This embodiment fixes many optical fiber heads 1 by a decentralized casing 4, preferably can adopt the metal metaphosphate core barrel; And then fix above-mentioned each optical element by a fixed cover 5, namely many optical fiber heads 1, angle of wedge optical element 3 and lens 2 are set in turn in this fixed cover 5.Preferably, fixed cover 5 can adopt metallic sheath, and stability is high.
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 are protection domain of the present utility model.
Claims (9)
1. a multiple optical fiber collimating comprises many optical fiber heads and lens, and described many optical fiber heads output end face is the wedge edged surface, and described lens have an equivalent focal plane, it is characterized in that: the wedge edged surface of described many optical fiber heads is to the equivalent optical path of described lens equivalent focal plane.
2. a kind of multiple optical fiber collimating as claimed in claim 1 is characterized in that: the central shaft of the described collimating apparatus of axis runout of described many optical fiber heads.
3. a kind of multiple optical fiber collimating as claimed in claim 2 is characterized in that: comprise that also one is used for the eccentric pipe box of fixing many optical fiber heads.
4. such as claim 1-3 a kind of multiple optical fiber collimating as described in each, it is characterized in that: also comprise an angle of wedge optical element, be located between many optical fiber heads and the lens.
5. a kind of multiple optical fiber collimating as claimed in claim 4, it is characterized in that: also comprise a fixed cover, described many optical fiber heads, angle of wedge optical element and lens are located in the fixed cover successively.
6. a kind of multiple optical fiber collimating as claimed in claim 4, it is characterized in that: described many optical fiber heads and angle of wedge optical element close proximity perhaps have the space between the two.
7. a kind of multiple optical fiber collimating as claimed in claim 4, it is characterized in that: described lens are non-spherical lens, plano-convex lens or C-lens lens.
8. such as claim 1-3 a kind of multiple optical fiber collimating as described in each, it is characterized in that: also comprise a fixed cover, described many optical fiber heads and lens are located in the fixed cover.
9. such as claim 1-3 a kind of multiple optical fiber collimating as described in each, it is characterized in that: described lens are non-spherical lens, plano-convex lens or C-lens lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220620024 CN202916459U (en) | 2012-11-22 | 2012-11-22 | Multi-fiber collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220620024 CN202916459U (en) | 2012-11-22 | 2012-11-22 | Multi-fiber collimator |
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|---|---|
| CN202916459U true CN202916459U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220620024 Expired - Lifetime CN202916459U (en) | 2012-11-22 | 2012-11-22 | Multi-fiber collimator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632345A (en) * | 2017-08-23 | 2018-01-26 | 中北大学 | Optical fiber macrobend coupled structure and its processing method based on uv-curable glue |
| CN109212764A (en) * | 2018-11-12 | 2019-01-15 | 珠海市杰威光电科技有限公司 | A kind of high point precision optical fiber component |
| CN112880977A (en) * | 2021-01-15 | 2021-06-01 | 深圳市鍂鑫科技有限公司 | Output method applied to collimator coupling system |
| US11402592B2 (en) | 2019-09-29 | 2022-08-02 | Innolight Technology (Suzhou) Ltd. | Optical interface assembly and optical module |
-
2012
- 2012-11-22 CN CN 201220620024 patent/CN202916459U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632345A (en) * | 2017-08-23 | 2018-01-26 | 中北大学 | Optical fiber macrobend coupled structure and its processing method based on uv-curable glue |
| CN107632345B (en) * | 2017-08-23 | 2020-09-04 | 中北大学 | Optical fiber macrobend coupling structure based on ultraviolet curing adhesive and processing method thereof |
| CN109212764A (en) * | 2018-11-12 | 2019-01-15 | 珠海市杰威光电科技有限公司 | A kind of high point precision optical fiber component |
| US11402592B2 (en) | 2019-09-29 | 2022-08-02 | Innolight Technology (Suzhou) Ltd. | Optical interface assembly and optical module |
| US11774687B2 (en) | 2019-09-29 | 2023-10-03 | Innolight Technology (Suzhou) Ltd. | Optical interface assembly and optical module |
| CN112880977A (en) * | 2021-01-15 | 2021-06-01 | 深圳市鍂鑫科技有限公司 | Output method applied to collimator coupling system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |