CN103364897A - Lens system for coupling single mode lasers - Google Patents

Lens system for coupling single mode lasers Download PDF

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Publication number
CN103364897A
CN103364897A CN2013103129043A CN201310312904A CN103364897A CN 103364897 A CN103364897 A CN 103364897A CN 2013103129043 A CN2013103129043 A CN 2013103129043A CN 201310312904 A CN201310312904 A CN 201310312904A CN 103364897 A CN103364897 A CN 103364897A
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China
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lens
collar
laser
coupling
pedestal
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CN103364897B (en
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李伟龙
李虹
于登群
孙雨舟
王祥忠
刘圣
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Singapore Taiyue Technology Co.,Ltd.
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Innolight Technology Suzhou Ltd
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Abstract

The invention relates to a lens system for coupling single mode lasers. The lens system comprises a laser, a first lens and a second lens, wherein the first lens and the second lens are coaxial; and the laser is laid within twice focal length of the first lens, so that a virtual image of the laser is positioned at the focal point of the second lens, and light emitted from an object point forms parallel light after passing the first lens and the second lens. In the structure, the first lens adopts passive alignment, and ensures that the divergence angle of beam becomes small, a beam waist light spot becomes large, and collimation is easy; and in addition, allowed coupling tolerance is high, high coupling efficiency can also be achieved under low alignment accuracy requirement, and the coupling and packaging feasibility is greatly improved.

Description

The lens combination that is used for the single-mode laser coupling
Technical field
The present invention relates to a kind of lens combination for the single-mode laser coupling, belong to the optical communication technique field.
Background technology
Flourish along with the optical communication industry, optical lens has obtained the application of very big degree as requisite optical component in the optic communication device.Lens are realized the function to beam collimation or focusing in communication device.Existing is directly to utilize single lens to carry out active coupling with the single-mode laser coupled method, but because the angle of divergence of single-mode laser is large, hot spot with a tight waist is little, require signal-lens aligning and fixed precision usually less than 0.2um, its coupling and fixed precision are little, and as shown in Figure 1, packaging technology requires high, the actual production yield is low, and production efficiency is poor.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of lens combination for the single-mode laser coupling is provided.
Purpose of the present invention is achieved through the following technical solutions:
The lens combination that is used for the single-mode laser coupling, characteristics are: comprise laser instrument, first lens and the second lens, described first lens is coaxial lens with the second lens, and one times of focal length that described laser instrument is placed on described first lens is positioned on the focus of the second lens its virtual image that is become with interior.
Further, the above-mentioned lens combination that is used for the single-mode laser coupling also comprises: the first lens collar, the second lens collar, hollow sliding accessory and pedestal; Described first lens and the second lens place respectively in the first lens collar and the second lens collar, the described second lens collar is connected with the first lens collar by hollow sliding accessory, the described first lens collar is fixed on the pedestal, has the through hole relative with first lens on the described pedestal.
Further, the above-mentioned lens combination that is used for the single-mode laser coupling, the described first lens collar is fixed on the pedestal by the laser bonding mode.
Further, the above-mentioned lens combination that is used for the single-mode laser coupling, described hollow sliding accessory is connected with the second lens collar with the first lens collar by the laser bonding mode.
Again further, the above-mentioned lens combination that is used for the single-mode laser coupling, between described first lens and the first lens collar and between the second lens and the second lens collar by the metallic glass one-shot forming.
The substantive distinguishing features that technical solution of the present invention is outstanding and significant progressive being mainly reflected in:
The invention provides a kind of lens combination for single-mode laser coupling, by the design lens collar, hollow sliding accessory and pedestal etc., the first lens packaging passive alignment diminishes the angle of divergence of light beam, and hot spot with a tight waist becomes large, is easy to collimation; In addition, the coupling tolerance of its permission is large, also can reach high coupling efficiency under low alignment precision requires, and the coupling package feasibility greatly improves.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: the background technology single-mode laser luminous Shu Liyong simple lens be coupled into the coupling efficiency of single-mode fiber and position skew (fixed precision) graph of a relation;
Fig. 2: single-mode laser luminous Shu Liyong lens combination of the present invention be coupled into the coupling efficiency of single-mode fiber and position skew (fixed precision) graph of a relation;
Fig. 3: the decomposition texture synoptic diagram of lens combination of the present invention;
Fig. 4: the light path synoptic diagram of lens combination of the present invention.
Embodiment
As shown in Figure 3, be used for the lens combination of single-mode laser coupling, comprise laser instrument 1, first lens 2, the second lens 3, the first lens collar 4, the second lens collar 5, hollow sliding accessory 6 and pedestal 7; First lens 2 is coaxial lens with the second lens 3, the second lens 3 place in the second lens collar 5, first lens 2 places in the first lens collar 4, the second lens collar 5 is connected with the first lens collar 4 by hollow sliding accessory 6, the first lens collar 4 is fixed on the pedestal, has the through hole relative with first lens 2 on the pedestal 7.
Between first lens 2 and the first lens collar 4 and between the second lens 3 and the second lens collar 5 by the metallic glass one-shot forming, hollow sliding accessory 6 is connected with the second lens collar 5 with the first lens collar 4 by the laser bonding mode, and the first lens collar 4 is fixed on the pedestal 7 by the laser bonding mode.
As shown in Figure 4, one times of focal length that laser instrument 1 is placed on first lens 2 is positioned on the focus of the second lens 3 with the interior virtual image that it is become, so so that the light that laser instrument 1 sends forms directional light behind first lens 2 and the second lens 3.During coupling package, will be with the focusing that is coupled of the first lens collar 4 of first lens 2 and pedestal 7, find the highest position of coupling efficiency by the first lens collar 4 in up and down (X, the Y-axis) slip on pedestal 7 surfaces, with laser bonding the first lens collar 4 is welded on the pedestal 7.The hollow sliding accessory 6 that size matches and the distance of the Z axis between the second lens collar 5 can be regulated and control arbitrarily, anchor clamps by laser-beam welding machine, and by hollow sliding accessory 6 on the first lens collar 4 surfaces up and down before and after (X, Y, Z axis) after the highest position of coupling efficiency is found in slip, with the sliding accessory 6 of laser bonding mode welded hollow and the second lens collar 5, with the fixing distance of Z axis, then again by hollow sliding accessory 6 on the first lens collar 4 surfaces (X up and down, Y-axis) slides, after finding optimistic coupling efficiency, with the sliding accessory 6 of laser bonding mode welded hollow and the first lens collar 4.
The invention provides a kind of lens combination device for single-mode laser coupling, by the design lens collar, hollow sliding accessory and pedestal etc., the first lens packaging passive alignment diminishes the angle of divergence of light beam, and hot spot with a tight waist becomes large, is easy to collimation; In addition, the coupling tolerance of its permission is large, also can reach high coupling efficiency under low alignment precision requires, and as shown in Figure 2, the coupling package feasibility greatly improves.
What need to understand is: the above only is preferred implementation of the present invention; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (5)

1. be used for the lens combination of single-mode laser coupling, it is characterized in that: comprise laser instrument, first lens and the second lens, described first lens is coaxial lens with the second lens; One times of focal length that described laser instrument is placed on described first lens is positioned on the focus of the second lens its virtual image that is become with interior.
2. the lens combination for the single-mode laser coupling according to claim 1 also comprises: the first lens collar, the second lens collar, hollow sliding accessory and pedestal; Described first lens and the second lens place respectively in the first lens collar and the second lens collar; Connect by hollow sliding accessory between the described first lens collar and the second lens collar; The described first lens collar is fixed on the pedestal; Have the through hole relative with first lens on the described pedestal.
3. the lens combination for single-mode laser coupling according to claim 2, it is characterized in that: the described first lens collar is fixed on the pedestal by the laser bonding mode.
4. the lens combination for single-mode laser coupling according to claim 2, it is characterized in that: described hollow sliding accessory is connected with the second lens collar with the first lens collar by the laser bonding mode.
5. the lens combination for single-mode laser coupling according to claim 2 is characterized in that: between described first lens and the first lens collar and between the second lens and the second lens collar by the metallic glass one-shot forming.
CN201310312904.3A 2013-07-24 2013-07-24 For the lens combination of single-mode laser coupling Active CN103364897B (en)

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CN201310312904.3A CN103364897B (en) 2013-07-24 2013-07-24 For the lens combination of single-mode laser coupling

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Application Number Priority Date Filing Date Title
CN201310312904.3A CN103364897B (en) 2013-07-24 2013-07-24 For the lens combination of single-mode laser coupling

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CN103364897B CN103364897B (en) 2015-08-12

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108429127A (en) * 2018-05-03 2018-08-21 无锡厦泰生物科技有限公司 A kind of Modular, semiconductor laser module
CN109283632A (en) * 2017-07-19 2019-01-29 苏州旭创科技有限公司 Optical module
CN110261973A (en) * 2019-06-26 2019-09-20 成都优博创通信技术股份有限公司 Laser module and optical communication equipment
US11432395B2 (en) 2017-07-19 2022-08-30 Innolight Technology Pte. Ltd. Optical module
US11561351B2 (en) 2017-07-19 2023-01-24 Innolight Technology Pte. Ltd. Optical module

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US5108167A (en) * 1990-07-16 1992-04-28 Rockwell International Corporation Method and apparatus for obtaining a simplified electro-optical signal coupling system
CN2293794Y (en) * 1997-04-28 1998-10-07 中国科学技术大学 Adjustable semi-conductor laser collimation head
US6253004B1 (en) * 1998-07-11 2001-06-26 Korea Advanced Institute Of Science And Technology Optical interconnection structure for enlarging alignment tolerance
CN2439042Y (en) * 2000-09-13 2001-07-11 欣技资讯股份有限公司 Improvement of double-lens unit
CN2544473Y (en) * 2002-05-24 2003-04-09 台达电子工业股份有限公司 Light collecting/transmitting module
CN101414059A (en) * 2008-11-28 2009-04-22 深圳市世纪人无线通讯设备有限公司 Light beam collimation method and device
CN203396987U (en) * 2013-07-24 2014-01-15 苏州旭创科技有限公司 Lens group for monomode laser coupling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5108167A (en) * 1990-07-16 1992-04-28 Rockwell International Corporation Method and apparatus for obtaining a simplified electro-optical signal coupling system
CN2293794Y (en) * 1997-04-28 1998-10-07 中国科学技术大学 Adjustable semi-conductor laser collimation head
US6253004B1 (en) * 1998-07-11 2001-06-26 Korea Advanced Institute Of Science And Technology Optical interconnection structure for enlarging alignment tolerance
CN2439042Y (en) * 2000-09-13 2001-07-11 欣技资讯股份有限公司 Improvement of double-lens unit
CN2544473Y (en) * 2002-05-24 2003-04-09 台达电子工业股份有限公司 Light collecting/transmitting module
CN101414059A (en) * 2008-11-28 2009-04-22 深圳市世纪人无线通讯设备有限公司 Light beam collimation method and device
CN203396987U (en) * 2013-07-24 2014-01-15 苏州旭创科技有限公司 Lens group for monomode laser coupling

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109283632A (en) * 2017-07-19 2019-01-29 苏州旭创科技有限公司 Optical module
US11432395B2 (en) 2017-07-19 2022-08-30 Innolight Technology Pte. Ltd. Optical module
CN115421258A (en) * 2017-07-19 2022-12-02 苏州旭创科技有限公司 Optical module
US11561351B2 (en) 2017-07-19 2023-01-24 Innolight Technology Pte. Ltd. Optical module
CN115421258B (en) * 2017-07-19 2024-02-23 苏州旭创科技有限公司 Optical module
US12075559B2 (en) 2017-07-19 2024-08-27 Innolight Technology Pte. Ltd. Optical module
US12092881B2 (en) 2017-07-19 2024-09-17 Innolight Technology Pte. Ltd. Optical module
CN108429127A (en) * 2018-05-03 2018-08-21 无锡厦泰生物科技有限公司 A kind of Modular, semiconductor laser module
CN110261973A (en) * 2019-06-26 2019-09-20 成都优博创通信技术股份有限公司 Laser module and optical communication equipment

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