CN105785574A - Optical beam splitting device having adjustable splitting ratio - Google Patents
Optical beam splitting device having adjustable splitting ratio Download PDFInfo
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- CN105785574A CN105785574A CN201410819130.8A CN201410819130A CN105785574A CN 105785574 A CN105785574 A CN 105785574A CN 201410819130 A CN201410819130 A CN 201410819130A CN 105785574 A CN105785574 A CN 105785574A
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- fiber head
- splitting ratio
- optical
- optical system
- beam splitter
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- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention provides an optical beam splitting device having an adjustable splitting ratio. The optical beam splitting device comprises a double-optical fiber head having an input function and an output function, an optical reflector capable of moving linearly, a collimating lens used for the double-optical fiber head, a single-optical fiber head used for receiving, a collimating lens used for the single-optical fiber head, and an actuator used for driving the optical reflector to move linearly. The adjusting of the splitting ratio can be realized by changing the position of the movable optical reflector in the optical path. The optical beam splitting device has advantages of simple structure, easy production, applicability in large-scale production, and abilities of realizing dynamic adjusting of large-scale splitting ratio and realizing miniaturization.
Description
Technical field
The present invention relates to and between optical element, luminous power is dynamically distributed；More particularly, it relates to be used for providing a kind of adjustable beam splitter of splitting ratio.
Background technology
Along with a large amount of uses of the intelligent and high-power semiconductor laser/fiber amplifier of communication network, how to carry out seeming more important dynamically distributing of luminous power to transmission line.
The adjustable beam splitter of common splitting ratio is mainly through space or waveguide mode.Spatial light beam splitter is based primarily upon reflection/transmission principle, as Chinese patent CN101216606B passes through the mobile realization of the transmitance gradual change plated film sheet beam splitting to light beam and splitting ratio monotone variation along its length.Transmitance gradual change plated film sheet is required height by this scheme in force；The length of diaphragm and the distance of movement determine product and are difficulty with miniaturization simultaneously.The change of waveguide type beam splitter splitting ratio is substantially and changes waveguiding structure by thermal expansion effects thus changing the change of coupled zone and reach the output of different branch adjustable.But this method usually brings bigger Polarization Dependent Loss, use thus limiting it in the large area of communication field.
Summary of the invention
It is an object of the invention to provide a kind of adjustable beam splitter of novel splitting ratio, so as to meet the requirement of communication and the miniaturization of product can be realized.
According to the present invention, a kind of adjustable beam splitter of splitting ratio is provided, it include one have input and the double optical fiber head of output, reflective optical system movable linearly, one for the collimating lens of double optical fiber head, one for the single fiber head received, a collimating lens for single fiber head and the actuator that moves linearly for driving reflective optical system to make.
The size of splitting ratio is determined by the position that reflective optical system is different in the optical path.Reflective optical system is under the driving of linear actuators, it is possible to move to complete blocked state from unobstructed state, it is thus possible to realize splitting ratio from 0% to infinity adjustment.
Accompanying drawing explanation
Fig. 1: the structural representation of the adjustable beam splitter of this splitting ratio.
Fig. 2: the light path schematic diagram of the adjustable beam splitter of this splitting ratio.
Detailed description of the invention
The adjustable beam splitter of splitting ratio as shown in Figure 1, comprising: for inputting and export the double optical fiber head (10) of optical signalling, collimating lens (12), reflective optical system (16) that can make to move linearly, collimating lens (13), single fiber head (14) and an actuator (17) moved linearly for driving reflective optical system to do.
Reflective optical system (16) includes the plane of a plating total reflection film.For reducing the impact of mechanical dimension and environment, the linear movement that reflective optical system (16) is preferably on the focal plane of collimating lens (12) and enters along focal plane or remove.The entrance of reflective optical system (16) or removal light path are driven by actuator (17) and realize.
As shown in Fig. 2 light path schematic diagram, the optical signal input mouth (10a) of input out collimated lens (12) collimation rear portion lease making light reflection mirror (16) focus on output port (10b) output through collimating lens (12) after stopping and reflecting；The collimated lens of the light (13) not being blocked focuses on output port (15) output.
When reflective optical system (16) enters light path, the light that it stops will increase, thus improve the light intensity output of output port (10b)；Correspondingly reduce the light intensity output of output port (15).Otherwise, when reflective optical system (16) removes light path, the light that it stops will reduce, thus reducing the light intensity that output port (10b) exports；Improve the light intensity output of single output port (15).As can be seen here, reflective optical system (16) position in the optical path determines the ratio of the light of two output ports (10b and 15).Owing to reflective optical system (16) position is continuously adjustable, thus it is also continuously adjustable for determining two output port (10b and 15) splitting ratios.It is dynamically adjustable on a large scale that the linear movement distance of raising reflective optical system (16) can realize splitting ratio.
What present embodiment was shown is the adjustable beam splitter of one-to-two splitting ratio.In actual use, can use as optical attenuator between input port (10a) and the either output port of double optical fiber head (10).If reflective optical system (16) is when original state is in and does not stop light path, open type optical attenuator can be made between input port (10a) and the output port (15) of double optical fiber head (10) and use (attenuation is minima when off working state)；Closed type optical attenuator can be made between input port (10a) and the output port (10b) of double optical fiber head (10) and use (attenuation is maximum when off working state).If reflective optical system (16) is when original state is in and stops light path completely, closed type optical attenuator can be made between input port (10a) and the output port (15) of double optical fiber head (10) and use；Open type optical attenuator can be made between input port (10a) and the output port (10b) of double optical fiber head (10) use.
Claims (5)
1. the adjustable beam splitter of splitting ratio, it includes one for sending the double optical fiber head with receiving optical signal, one collimating lens for double optical fiber head, one reflective optical system movable linearly, one single fiber head for receiving optical signal, a collimating lens for single fiber head and one are for driving reflective optical system to make the actuator moved linearly.
2. the adjustable beam splitter of splitting ratio as defined in claim 1, it is characterised in that moveable reflective optical system is for linear motion in the optical path.
3. the adjustable beam splitter of splitting ratio as defined in claim 1, it is characterised in that moveable reflective optical system realizes stopping light beam and the light beam stopped being entirely reflected to the receiving port of double optical fiber head.
4. the adjustable beam splitter of splitting ratio as defined in claim 1, it is characterised in that the light not stopped by reflective optical system focuses on the fiber port of single fiber head through another collimating lens.
5. the adjustable beam splitter of splitting ratio as defined in claim 1, it is characterised in that send port and arbitrary reception fiber port can be made optical attenuator and use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819130.8A CN105785574A (en) | 2014-12-25 | 2014-12-25 | Optical beam splitting device having adjustable splitting ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819130.8A CN105785574A (en) | 2014-12-25 | 2014-12-25 | Optical beam splitting device having adjustable splitting ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105785574A true CN105785574A (en) | 2016-07-20 |
Family
ID=56377708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819130.8A Pending CN105785574A (en) | 2014-12-25 | 2014-12-25 | Optical beam splitting device having adjustable splitting ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105785574A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402031A (en) * | 2001-08-09 | 2003-03-12 | 三星电机株式会社 | Light path change variable light attenuator |
| CN1464331A (en) * | 2002-06-18 | 2003-12-31 | 深圳市华伟荣科技有限公司 | Variable optical attenuator |
| US20050068631A1 (en) * | 2003-09-29 | 2005-03-31 | Wen Liu | Variable polarization independent optical power splitter |
| CN201654292U (en) * | 2010-03-05 | 2010-11-24 | 上海霍普光通信有限公司 | Diaphragm type multimode optical divider |
| CN204269934U (en) * | 2014-12-25 | 2015-04-15 | 韩朝阳 | The beam splitter that a kind of splitting ratio is adjustable |
-
2014
- 2014-12-25 CN CN201410819130.8A patent/CN105785574A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402031A (en) * | 2001-08-09 | 2003-03-12 | 三星电机株式会社 | Light path change variable light attenuator |
| CN1464331A (en) * | 2002-06-18 | 2003-12-31 | 深圳市华伟荣科技有限公司 | Variable optical attenuator |
| US20050068631A1 (en) * | 2003-09-29 | 2005-03-31 | Wen Liu | Variable polarization independent optical power splitter |
| CN201654292U (en) * | 2010-03-05 | 2010-11-24 | 上海霍普光通信有限公司 | Diaphragm type multimode optical divider |
| CN204269934U (en) * | 2014-12-25 | 2015-04-15 | 韩朝阳 | The beam splitter that a kind of splitting ratio is adjustable |
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Application publication date: 20160720 |