CN1405589A - Apparatus and method for switching-over light path - Google Patents
Apparatus and method for switching-over light path Download PDFInfo
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- CN1405589A CN1405589A CN 01141752 CN01141752A CN1405589A CN 1405589 A CN1405589 A CN 1405589A CN 01141752 CN01141752 CN 01141752 CN 01141752 A CN01141752 A CN 01141752A CN 1405589 A CN1405589 A CN 1405589A
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Abstract
A device for switching light path comprises an input, an output, a free space light path between said input end and output end and a prism forming switching light path with can make the light beam have two times of refraction and one time of reflection when it is placed between the input and output, removing the prism to make the incident light from the input couple with the output via the free space light path, then plugging in the prism to make the input incident light form a switching light path after two times of refraction and one time of reflection and couple with the output.
Description
Technical field
The invention belongs to the device and method of optical system controller and method, particularly a kind of switching-over light path.
Background technology
Optical switch (optical switch) particularly in optical communication system, is played the part of basic and important role in optical system.In optical communication system, optical switch system is used for connecting and cutting off the transmission path (transmission path) of light signal, with the light beam (light beam) around footpath (route) carrying information.In other optical system, optical switch then is used to control the output of light source.Because the velocity of propagation of light is fast, so optical switch must have high switching rate (switching rate), just can not influence the operation of optical system.The principal element that influences performance in optical switch still has the loss of insertion (insertionloss), be inserted into loss and reduce the decay (attenuation) that light signal causes because of optical switch, the decay of light signal must increase the intensity of image intensifer with the raising light signal, and the optical alignment (alignment) of the quantity of minimizing optical element and pinpoint accuracy all helps reducing the insertion loss.Optical switch may cause optical misalignment (misalignment) after switching through repetitiousness ground, make the optically-coupled rate hurriedly fall, so the stability of optical switch is also quite important.
Simple and the cheap in theory realization approach of mechanical optical switch system, but be subjected to many restrictions.For example, people such as Chang are at United States Patent (USP) the 6th, 044, a kind of optical switch and device are proposed in No. 186, it is that the optical fiber attaching (attach) of light signal input end is switched on the member one, utilize this switching mechanism to be pivoted between the two positions, make input optical fibre aim at the purpose that different output optical fibres reaches switching optical path.This kind approach must moving fiber, need the aligning of pinpoint accuracy, and its reliability is relatively poor.
Keep optical fiber not move, and the mode of utilizing optical element to change light path have better simply advantage.Reflective optical switch is suggested, and for example awards to people's such as Pan No. the 5th, 838,847, United States Patent (USP), and it is the tail end that uses reflecting element movably to be placed in the tail end of optical fiber or to move apart optical fiber, to reach the purpose that changes light path.Yet, use reflective switching device very responsive for angular variation (angular variation), be difficult for reaching fast and switching accurately, and have many optical switches to reach with this kind technology.
Lee is at United States Patent (USP) the 6th, 088, use in No. 166 prism come the translation light beam from an optical fiber to another optical fiber, this switching mode is to make twice refraction of light beam through prism, has simple and cheap advantage, but big as the prism volume of optical switch element, and Heavy Weight, the size that is unfavorable for reduction means also is unfavorable for handling mechanism (mechanism) design of this prism, is difficult to its group to realize more I/O.And people such as Li are at United States Patent (USP) the 6th, 215, the direction that then is to use prism wedge (wedgeprism) to come rotary beam in No. 919, and cooperate suitable ornaments gradually changed refractive index formula lens (gradient indexlens) to reach the purpose that switches to another optical fiber from an optical fiber, this method can be reduced the size and the weight of prism, but it is complicated that the control of light path becomes, and needs the prism and the optical alignment of pinpoint accuracy, and be difficult to reach the purpose of many I/O.
Summary of the invention
The purpose of this invention is to provide that a kind of volume is little, in light weight, simple in structure, cheap, control stabilization and reach the device and method of the switching-over light path of many I/O.
Apparatus of the present invention comprise input end, output terminal, be formed between input end and the output terminal the free space light path and can be when inserting between input end and the output terminal with twice of the refraction of optical beam and total reflection once to form the prism of switching-over light path; The inventive method is included in the free space light path is set between input end and the output terminal; Mobile prism in the free space light path; Moving apart prism makes input end inject light through free space light path and output terminal coupling; Insert prism, input end is injected light through twice of prismatic refraction and the once switching-over light path and the output terminal coupling of formation of reflection.
Wherein:
Prism is prism wedge or isosceles prism prism.
Output terminal comprises by first output terminal of free space light path and input end coupling and second output terminal that is coupled by switching-over light path and input end.
Input end comprises by the first input end of free space light path and output terminal coupling and second input end that is coupled by switching-over light path and output terminal.
Input end comprises the first input end and second input end; Output terminal comprises first output terminal and second output terminal; First and second input end of input end is coupled by two switching-over light paths and output terminal second, the output terminal that first and second output terminal of two free space light paths and output terminal is coupled/is formed by the prism that inserts between input end and the output terminal respectively respectively.
Place the prism between input end and the output terminal to comprise first prism and second prism that combines with first prism; First and second prism respectively with twice of the refraction of optical beam and total reflection once to form two switching-over light paths; Input end comprises first and second input end; Output terminal comprises respectively by first and third output terminal of two free space light paths and the coupling of first and second input end and second, four output terminals that are coupled by two switching-over light paths and first and second input end respectively.
Place the prism between input end and the output terminal to comprise first prism and second prism that combines with first prism; First and second prism respectively with twice of the refraction of optical beam and total reflection once to form two switching-over light paths; Input end comprises first and second input end; Output terminal comprises respectively by first and third output terminal of two free space light paths and the coupling of first and second input end and second, four output terminals that are coupled by two switching-over light paths and first and second input end respectively.
First and second prism is prism wedge or isosceles prism.
Make the light beam of input end be guided the elsewhere and not arrive output terminal through switching-over light path.
Make the light beam and the coupling of second output terminal of input end through switching-over light path.
Two free space light paths are set between input end and output terminal; In the step 2 in two free space light paths mobile prism; Moving apart prism makes first and second input end inject light respectively through two free space light paths and the coupling of first and second output terminal; Insert prism, light beam once forms two switching-over light paths through twice of prismatic refraction and reflection; First and second input end is respectively through two switching-over light paths and second, output terminal coupling.
The prism that moves in the free space light path comprises first and second prism; Insert prism, input end is respectively through twice of first and second prismatic refraction and once first and second switching-over light path and the coupling of first and second output terminal of formation of reflection.
A kind of device of switching-over light path, it comprise most input ends, most output terminal, most be arranged at respectively between each input end and the output terminal the free space light path and at least one can be when inserting between input end and the output terminal with twice of the refraction of optical beam and total reflection once to form the prism of switching-over light path.
Prism is prism wedge or isosceles prism prism.
A kind of method of switching-over light path, it is included in most free space light paths is set between most input ends and the most output terminal; In most free space light paths, move at least one prism; Moving apart prism makes most input ends inject light respectively through most free space light paths and the coupling of most output terminal; Insert prism, most input ends are through twice of prismatic refraction and the once most switching-over light paths and the coupling of most output terminal of formation of reflection.
A kind of device of switching-over light path, it comprise input end, most output terminals corresponding, be arranged at the free space light path between an input end and the output terminal and insert input end with input end and most output terminal between can be respectively with twice of the refraction of optical beam and total reflection once to form most prisms of most switching-over light paths.
Most prisms are prism wedge or isosceles prism prism.
A kind of method of switching-over light path, it is included between input end and the most output terminal free space light path is set; Arrange most prisms in the free space light path; Moving apart most prisms makes input end inject light through free space light path and output terminal coupling; Most prisms are inserted separately, handle most prisms insertion permutation and combination and make light beam once form most switching-over light paths through twice of each prismatic refraction and reflection.
A kind of device of switching-over light path, it comprises input end, output terminal, be formed between input end and the output terminal most free space light paths and can be when inserting between input end and the output terminal with twice of the refraction of optical beam and total reflection once to form the prism of most switching-over light paths; Input end is the multiple optical fiber collimating that comprises most input optical fibres; Output terminal is the multiple optical fiber collimating that comprises most output optical fibres.
Prism is prism wedge or isosceles prism prism.
Be formed at the crossing free space light path of two between input end and the output terminal and form the angle that is about in 0.5 ° of-3 ° of scope.
Because apparatus of the present invention comprise input end, output terminal, be formed between input end and the output terminal the free space light path and can be when inserting between input end and the output terminal with twice of the refraction of optical beam and total reflection once to form the prism of switching-over light path; The inventive method is included in the free space light path is set between input end and the output terminal; Mobile prism in the free space light path; Moving apart prism makes input end inject light through free space light path and output terminal coupling; Insert prism, input end is injected light through twice of prismatic refraction and the once switching-over light path and the output terminal coupling of formation of reflection.The present invention is under the prerequisite of the I/O end of moving fiber or light signal not, and the light beam from input end to output terminal forms the light path of switching through twice refraction and a total reflection of prism between input end and output terminal; When prism removed in this free space, the light beam from input end to output terminal was through the transmission of free space light path; Thereby reach the purpose that changes light path; The present invention can be applicable to various optical switch devices; Not only volume is little, in light weight, simple in structure, and cheap, control stabilization and reach many I/O, thereby reaches the object of the invention.
Description of drawings
Fig. 1, be applied to 2 * 2 optical exchanger structural representation front elevations for the present invention.
Fig. 2, be applied to 2 * 2 optical exchanger structural representation front elevations when prism (insert) for the present invention.
Fig. 3, be applied to 2 * 2 optical exchanger structural representation front elevations for the present invention.
Fig. 4, be applied to 2 * 2 optical exchanger structural representation front elevations when prism (insert) for the present invention.
Fig. 5, be applied to open and close type optical switch fabric diagrammatic elevation view for the present invention.
Fig. 6, be applied to open and close type optical switch fabric diagrammatic elevation view when prism (insert) for the present invention.
Fig. 7, be applied to 2 * 4 optical exchanger structural representation front elevations for the present invention.
Fig. 8, be applied to 2 * 1 optical exchanger structural representation front elevations for the present invention.
Fig. 9, be applied to 2 * 1 optical exchanger structural representation front elevations when prism (insert) for the present invention.
Figure 10, be applied to 3 * 6 optical exchanger structural representation front elevations for the present invention.
Figure 11, be applied to 1 * 4 optical exchanger structural representation front elevation for the present invention.
Figure 12, be applied to 1 * 4 optical exchanger structural representation front elevation when prism (insert) for the present invention.
Figure 13, be applied to 1 * 4 optical exchanger structural representation front elevation when prism (insert) for the present invention.
Figure 14, be applied to 1 * 4 optical exchanger structural representation front elevation when prism (insert) for the present invention.
Figure 15, be applied to 2 * 2 optical exchanger structural representation front elevations (use double-fiber collimator) for the present invention.
Figure 16, be applied to 2 * 2 optical exchanger structural representation front elevations (use double-fiber collimator, when inserting prism) for the present invention.
Embodiment
Characteristics of the present invention are to utilize different principles to reach the purpose that changes light path.Device and method of the present invention is included in arranges the position of free space light path and control prism to get involved or leave the free space light path between the input end of light signal and the output terminal.When prism is inserted in the free space light path, the light path of form switching, light beam by twice of prismatic refraction and total reflection once thereby reaches the purpose that changes light path.
To be that example illustrates principle of the present invention and operation below with the optical exchanger of many different kenels.
Embodiment one
The present invention is 2 * 2 optical exchangers.As shown in Figure 1 and Figure 2, the present invention includes first and second light signal input end 10,12 and first and second light signal output end 14,16.First and second input end 10,12 and first and second output terminal 14,16 all contain collimating apparatus (collimator) or collimation lens (collimatinglens) is coupling in the optical fiber tail end.First and second input end 10,12 and first and second output terminal 14,16 are two pairs of I/O parallel to each other.
As shown in Figure 1, form free space light path 18 respectively between the first input end 10 and first output terminal 14; Form another free space light path 20 between second input end 12 and second output terminal 16.Before the switching, the light signal that is coupled into first output terminal, 14, the second input ends 12 from the light signal of first input end 10 is coupled into second output terminal 16, and this two light beam is parallel to each other.
As shown in Figure 2, when prism 22 is inserted into when switching between first and second input end 10,12 of light signal and first and second output terminal 14,16, two free space light paths 18,20 promptly are changed and are switching-over light path 24,26; Be coupled into second output terminal 16 from the light beam of first input end 10 through twice refraction of prism 22 and a total reflection; Be coupled in first output terminal 14 through twice refraction of prism 22 and a total reflection from the light beam of second input end 12, promptly, make the free space light path 18,20 between first and second input end 10,12 and first and second output terminal 14,16 change into switching-over light path 24,26 by the insertion of prism 22.
Prism 22 is prism wedge or isosceles prism, and it has base 23 and the two symmetrical hypotenuses 25,27 that are parallel to the incident light direction.The surface of hypotenuse 25,27 can plated film, to reduce reflection of incident light and to reduce polarization associated loss (Polarization-Dependent Loss; PDL).After prism 22 is inserted into two free space light paths 18,20, parallel and the optical axis (optical axis) that be symmetrical in prism 22 of two bundles incident spectrum parallel to each other is incident in the prism 22, through after twice refraction and a total reflection of prism 22, form two bundles emergent light parallel to each other, this two bundle outgoing spectrum parallel to each other is parallel and be symmetrical in the optical axis of prism 22, but that incident light parallel to each other is restrainted in position and two is opposite.Promptly by the position that changes prism 22 be the travel path of may command two light beams be as shown in Figure 1 directly advance shape; Or cross-like as shown in Figure 2, thereby reach the function of switching-over light path.
Handle if blackout is bestowed in the part of prism 22, then the present invention becomes 2 * 2 blocking type optical exchangers.
Embodiment two
The present invention is 1 * 2 optical exchanger.As shown in Figure 3, Figure 4, the present invention includes light signal input end 28 and with first and second output terminals 30,32 of light signal of input end 28 corresponding settings, first output terminal 30 in first and second parallel output terminal 30,32 is aimed at input end 28.
As shown in Figure 3, before the switching, form free space light path 34 between input end 28 and first output terminal 30 of aiming at input end 28, incident light is coupled to first output terminal 30 from input end 28.As shown in Figure 4, when prism 36 is inserted into when switching between light signal input end 28 and first and second output terminal 30,32, free space light path 34 promptly is changed and is switching-over light path 38, incident light enters the prism 36 to be parallel to prism 36 optical axis directions from input end 28, twice refraction and a total reflection through prism 36 form emergent light, and are coupled into second output terminal 32.
Embodiment three
The present invention is the open and close type optical switch.As Fig. 5, shown in Figure 6, the present invention includes light signal input end 40 aligned with each other and output terminal 42.As shown in Figure 5, during opening (on state), form free space light path 44 between input end 40 and the output terminal 42, light beam directly is coupled to output terminal 42 from input end 40.As shown in Figure 6, when prism 46 is inserted into the closed condition (off state) of carrying out the light path switching between light signal input end 40 and the output terminal 42, form switching-over light path 48, incident light enters prism 46 from input end 40, twice refraction and total reflection formation emergent light through prism 46 are led to the elsewhere, and no longer are coupled to output terminal 42.
Embodiment four
The present invention is 2 * 4 optical exchangers.As shown in Figure 7, the present invention is two 1 * 2 optical exchangers of combination, and two prisms 96,98 base plates plate behind the reflectance coating glued together respectively.The present invention includes first and second input end 84,86 of light signal and first, second, third and fourth input end 88,90,92,94.
Before the switching that prism 96,98 is not inserted into, two incident lights are coupled to first and third output terminal 88,92 from first and second input end 84,86 through two free space light paths 100,102 respectively.
When prism 96,98 is inserted into when switching between first and second input end 84,86 of light signal and first, second, third and fourth output terminal 88,90,92,94, free space light path 100,102 promptly is changed and is switching-over light path 104,106; Two incident lights are parallel to the optical axis incident of two prisms 96,98 and are coupled in second, four output terminals 90,94 along two switching-over light paths 104,106 through twice refraction and a total reflection of two prisms 96,98 from first and second input end 84,86 respectively.Mode in conjunction with a plurality of prisms, can obtain the optical exchanger at more I/O port according to this.
Embodiment five
The present invention is 2 * 1 optical exchangers.As Fig. 8, shown in Figure 9, the present invention includes first and second input end 110,112 of light signal and aim at the light signal output end 114 of setting with first input end 110.
As shown in Figure 8, before the switching, form free space light path 116 between first input end of aiming at output terminal 114 110 and the output terminal 114, incident light is coupled to the output terminal 114 from first input end 110.As shown in Figure 9, when prism 118 is inserted into when switching between first and second input end 110,112 of light signal and the output terminal 114, form switching-over light path 120, this moment, the incident light of second input end 112 entered in the prism 118 to be parallel to prism 118 optical axis directions, twice refraction and a total reflection through prism 118 form emergent light, and are coupled into output terminal 114.
Embodiment six
The present invention is 3 * 6 optical exchangers.As shown in figure 10, the present invention includes and be parallel to first, second and third input end 122,124,126 of light signal that prism 146 optical axises arrange and first, second, third and fourth, five, six output terminals 128,130,132,134,136,138.First and third, five output terminals 128,132,136 are aimed at first, second and third input end 122,124,126 respectively.Before the switching that prism 146 is not inserted into, three incident lights are coupled to first and third, five output terminals 128,132,136 from first, second and third input end 122,124,126 through three free space light paths 140,142,144 respectively.
When prism 146 is inserted into when switching between first, second and third input end of light signal and first, second, third and fourth, five, six output terminals, three free space light paths 140,142,144 are changed and are switching-over light path 148,150,152; Three incident lights are parallel to the optical axis incident of prism 146 and are coupled in second, four, six output terminals 130,134,138 along three switching-over light paths 148,150,152 through twice refraction and a total reflection of prism 146 from first, second and third input end respectively.
Embodiment seven
The present invention is 1 * 2 optical exchanger.As Figure 11, shown in Figure 12, the present invention includes light signal input end 154 and aim at input end 154 with input end 154 first, second, third and fourth output terminal 156,158,160,162, the first output terminals 156 of light signal corresponding and that be arranged in parallel.
As shown in figure 11, before the switching, form free space light path 164 between input end 154 and first output terminal 156 of aiming at input end 154, incident light is coupled to first output terminal of aiming at it 156 from input end 154.
As shown in figure 12, when being inserted into when switching between light signal input end 164 and first, second, third and fourth output terminal 156,158,160,162 to plate first and second prism 166,168 that the reflectance coating surface glue lumps together, free space light path 164 promptly is changed and forms first switching-over light path 170, incident light enters first prism 166 to be parallel to first prism, 166 optical axis directions from input end 154, twice refraction and a total reflection through first prism 166 form emergent light, and are coupled into second output terminal 158.
As shown in figure 13, when prism 172 is inserted into when switching between light signal input end 154 and first, second, third and fourth output terminal 156,158,160,162, free space light path 164 promptly is changed and forms second switching-over light path 174, incident light enters the prism 172 to be parallel to prism 172 optical axis directions from input end 154, twice refraction and a total reflection through prism 172 form emergent light, and are coupled into the 3rd output terminal 160.
As shown in figure 14, with first, two, prism 166,168,172 all insert light signal input end 154 and first, two, three, four output terminals 156,158,160, when switching between 162, free space light path 164 promptly is changed and forms the 3rd switching-over light path 176, incident light from input end 154 to be parallel to the 3rd, two prisms 172,168 optical axis directions carry out the 3rd in regular turn, two prisms 172, in 168, through the 3rd, two prisms 172, the emergent light that twice refraction of 168 and a total reflection form, and be coupled into the 4th output terminal 162, promptly be switched to the 4th output terminal 162.Mode can realize more optical exchanger according to this.
Embodiment eight
The present invention is 2 * 2 optical exchangers.As Figure 15, shown in Figure 16, the present invention includes light signal input end 178 and light signal output end 184.Input end 178 is for using the double-fiber collimator that comprises first and second input optical fibre 180,182.Output terminal 184 is for using the double-fiber collimator that comprises first and second output optical fibre 186,188.
Form the two free space light paths 190,192 that intersect that angle is about 0.5 °-3 ° between input end 178 and the output terminal 184, and make of two free space light paths 190,192 and second, one output optical fibre 188,186 couplings of first and second input optical fibre 180,182 through intersecting.For expressing clearly, distance in Figure 15, Figure 16 between two free space light paths, 190,192 end points and angle are by exaggerative.This type of multiple optical fiber collimating can be with reference to the 6th, 249, No. 625 patents of the United States Patent (USP) of awarding to Pan.
As shown in figure 15, before the switching, be coupled into output terminal 184 second output optical fibres 188 from the light signal of input end 178 first input optical fibres 180; And the light signal of input end 178 second input optical fibres 182 is coupled into output terminal 184 first output optical fibres 186, and this two light beam is interlaced with each other.
As shown in figure 16, when prism 194 is inserted into when switching between light signal input end 178 and the output terminal 184, two free space light paths 190,192 promptly are changed and form switching-over light path 196,198; Twice refraction and a total reflection through prism 194 is coupled into respectively in output terminal 184 first and second output optical fibres 186,188 from the light beam of input end 178 first and second input optical fibres 180,182, by the insertion of prism 194, make the free space light path 190,192 between input end 178 first and second input optical fibres 180,182 and output terminal 184 first and second output optical fibres 186,188 change into switching-over light path 196,198.Present embodiment is compared with first embodiment that uses the single fiber collimating apparatus, can reduce the quantity of collimating apparatus, and can dwindle the spacing between input end and the output terminal, reduces the height and the length of prism, so the volume of single unit system and weight all can reduce.
As mentioned above, the invention provides the device and method that is used for switching the light path that different light paths advances with control bundle, be issued to the function of switching-over light path in the prerequisite of the I/O end of moving fiber or light signal not.
The present invention includes light signal input end and output terminal, form free space light path (free space optical path) between input end and the output terminal, movably prism is inserted into relatively in the free space light path or certainly and removes in this space optical path, uses the light path that control bundle is advanced between this input end and output terminal.When prism was inserted in the free space light path, the light beam from input end to output terminal formed the light path of switching (switched opticalpath) through twice refraction and a total reflection of prism between input end and output terminal.When prism removed in this free space, the light beam from input end to output terminal was through the transmission of free space light path.
Prism is prism wedge (dove prism) or isosceles prism isosceles prism) so that the volume and the weight of reduction switching element.
The present invention can be applicable to various optical switch devices, for example 1 * 2 optical exchanger, 2 * 1 optical exchangers, 2 * 2 optical exchangers, 2 * 2 blocking type photoswitches (blocking optical switch) and open and close type optical switch (on-off optical switch), or pile up the optical exchanger that a plurality of prisms form more I/O ports (I/Oport), for example 1 * 4 optical exchanger and 2 * 4 optical exchangers.
Claims (22)
1, a kind of device of switching-over light path, it is characterized in that it comprise input end, output terminal, be formed between input end and the output terminal the free space light path and can be when inserting between input end and the output terminal with twice of the refraction of optical beam and total reflection once to form the prism of switching-over light path.
2, the device of switching-over light path according to claim 1 is characterized in that described prism is prism wedge or isosceles prism prism.
3, the device of switching-over light path according to claim 1 is characterized in that described output terminal comprises by first output terminal of free space light path and input end coupling and second output terminal that is coupled by switching-over light path and input end.
4, the device of switching-over light path according to claim 1 is characterized in that described input end comprises by the first input end of free space light path and output terminal coupling and second input end that is coupled by switching-over light path and output terminal.
5, the device of switching-over light path according to claim 1 is characterized in that described input end comprises the first input end and second input end; Output terminal comprises first output terminal and second output terminal; First and second input end of input end is coupled by two switching-over light paths and output terminal second, the output terminal that first and second output terminal of two free space light paths and output terminal is coupled/is formed by the prism that inserts between input end and the output terminal respectively respectively.
6, the device of switching-over light path according to claim 3 is characterized in that describedly placing prism between input end and the output terminal to comprise first prism and second prism that combines with first prism; First and second prism respectively with twice of the refraction of optical beam and total reflection once to form two switching-over light paths; Input end comprises first and second input end; Output terminal comprises respectively by first and third output terminal of two free space light paths and the coupling of first and second input end and second, four output terminals that are coupled by two switching-over light paths and first and second input end respectively.
7, the device of switching-over light path according to claim 1 is characterized in that describedly placing prism between input end and the output terminal to comprise first prism and second prism that combines with first prism; First and second prism respectively with twice of the refraction of optical beam and total reflection once to form two switching-over light paths; Input end comprises first and second input end; Output terminal comprises respectively by first and third output terminal of two free space light paths and the coupling of first and second input end and second, four output terminals that are coupled by two switching-over light paths and first and second input end respectively.
8, the device of switching-over light path according to claim 7 is characterized in that described first and second prism is prism wedge or isosceles prism.
9, a kind of method of switching-over light path is characterized in that it comprises the steps:
Step 1
The free space light path is set between input end and output terminal;
Step 2
Mobile prism in the free space light path; Moving apart prism makes input end inject light through free space light path and output terminal coupling; Insert prism, input end is injected light through twice of prismatic refraction and the once switching-over light path and the output terminal coupling of formation of reflection.
10, the method for switching-over light path according to claim 9 is characterized in that described step 2 makes the light beam of input end be guided the elsewhere and not arrive output terminal through switching-over light path.
11, the method for switching-over light path according to claim 9 is characterized in that described step 2 makes the light beam and the coupling of second output terminal of input end through switching-over light path.
12, the method for switching-over light path according to claim 9 is characterized in that being provided with in the described step 1 two free space light paths between input end and output terminal; In the step 2 in two free space light paths mobile prism; Moving apart prism makes first and second input end inject light respectively through two free space light paths and the coupling of first and second output terminal; Insert prism, light beam once forms two switching-over light paths through twice of prismatic refraction and reflection; First and second input end is respectively through two switching-over light paths and second, output terminal coupling.
13, the method for switching-over light path according to claim 9 is characterized in that the prism that moves in the described step 2 comprises first and second prism in the free space light path; Insert prism, input end is respectively through twice of first and second prismatic refraction and once first and second switching-over light path and the coupling of first and second output terminal of formation of reflection.
14, a kind of device of switching-over light path, it is characterized in that it comprise most input ends, most output terminal, most be arranged at respectively between each input end and the output terminal the free space light path and at least one can be when inserting between input end and the output terminal with twice of the refraction of optical beam and total reflection once to form the prism of switching-over light path.
15, the device of switching-over light path according to claim 14 is characterized in that described prism is prism wedge or isosceles prism prism.
16, a kind of method of switching-over light path is characterized in that it comprises the steps:
Step 1
Most free space light paths are set between most input ends and most output terminal;
Step 2
In most free space light paths, move at least one prism; Moving apart prism makes most input ends inject light respectively through most free space light paths and the coupling of most output terminal; Insert prism, most input ends are through twice of prismatic refraction and the once most switching-over light paths and the coupling of most output terminal of formation of reflection.
17, a kind of device of switching-over light path, it is characterized in that it comprise input end, most output terminals corresponding, be arranged at the free space light path between an input end and the output terminal and insert input end with input end and most output terminal between can be respectively with twice of the refraction of optical beam and total reflection once to form most prisms of most switching-over light paths.
18, the device of switching-over light path according to claim 17 is characterized in that described most prism is prism wedge or isosceles prism prism.
19, a kind of method of switching-over light path is characterized in that it comprises the steps:
Step 1
Between input end and most output terminal, the free space light path is set;
Step 2
Arrange most prisms in the free space light path; Moving apart most prisms makes input end inject light through free space light path and output terminal coupling; Most prisms are inserted separately, handle most prisms insertion permutation and combination and make light beam once form most switching-over light paths through twice of each prismatic refraction and reflection.
20, a kind of device of switching-over light path, it is characterized in that it comprise input end, output terminal, be formed between input end and the output terminal most free space light paths and can be when inserting between input end and the output terminal with twice of the refraction of optical beam and total reflection once to form the prism of most switching-over light paths; Input end is the multiple optical fiber collimating that comprises most input optical fibres; Output terminal is the multiple optical fiber collimating that comprises most output optical fibres.
21, the device of switching-over light path according to claim 19 is characterized in that described prism is prism wedge or isosceles prism prism.
22, the device of switching-over light path according to claim 19 is characterized in that the described crossing free space light path of two between input end and the output terminal that is formed at forms the angle that is about in 0.5 ° of-3 ° of scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011417528A CN1166968C (en) | 2001-09-17 | 2001-09-17 | Apparatus and method for switching-over light path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011417528A CN1166968C (en) | 2001-09-17 | 2001-09-17 | Apparatus and method for switching-over light path |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1405589A true CN1405589A (en) | 2003-03-26 |
| CN1166968C CN1166968C (en) | 2004-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011417528A Expired - Fee Related CN1166968C (en) | 2001-09-17 | 2001-09-17 | Apparatus and method for switching-over light path |
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| Country | Link |
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| CN (1) | CN1166968C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1981189B (en) * | 2004-07-02 | 2010-10-06 | 皇家飞利浦电子股份有限公司 | Spectroscopic system with multiple probes |
| CN103779114A (en) * | 2014-02-10 | 2014-05-07 | 北京市农林科学院 | Electromagnetic light path change-over switch |
| TWI470295B (en) * | 2012-10-08 | 2015-01-21 | Hung Shiang Jiang | An optical transport module with bypass switch function and a device housing thereof |
| CN104793294A (en) * | 2015-04-29 | 2015-07-22 | 中国电子科技集团公司第三十四研究所 | Multichannel 2x2 photoswitch |
| CN105891968A (en) * | 2016-06-23 | 2016-08-24 | 无锡宏纳科技有限公司 | One-four-optional optical switch |
| CN110187494A (en) * | 2019-06-26 | 2019-08-30 | 蔚海光学仪器（上海）有限公司 | Multichannel light switching system and optical device |
-
2001
- 2001-09-17 CN CNB011417528A patent/CN1166968C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1981189B (en) * | 2004-07-02 | 2010-10-06 | 皇家飞利浦电子股份有限公司 | Spectroscopic system with multiple probes |
| TWI470295B (en) * | 2012-10-08 | 2015-01-21 | Hung Shiang Jiang | An optical transport module with bypass switch function and a device housing thereof |
| CN103779114A (en) * | 2014-02-10 | 2014-05-07 | 北京市农林科学院 | Electromagnetic light path change-over switch |
| CN103779114B (en) * | 2014-02-10 | 2015-07-29 | 北京市农林科学院 | Electromagnetic type light path converting switch |
| CN104793294A (en) * | 2015-04-29 | 2015-07-22 | 中国电子科技集团公司第三十四研究所 | Multichannel 2x2 photoswitch |
| CN105891968A (en) * | 2016-06-23 | 2016-08-24 | 无锡宏纳科技有限公司 | One-four-optional optical switch |
| CN110187494A (en) * | 2019-06-26 | 2019-08-30 | 蔚海光学仪器（上海）有限公司 | Multichannel light switching system and optical device |
| CN110187494B (en) * | 2019-06-26 | 2024-03-08 | 蔚海光学仪器（上海）有限公司 | Multi-path optical switching system and optical device |
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| Publication number | Publication date |
|---|---|
| CN1166968C (en) | 2004-09-15 |
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