CN110441030A - A kind of the channel alignment system and channel alignment method of slab guide class device - Google Patents
A kind of the channel alignment system and channel alignment method of slab guide class device Download PDFInfo
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Abstract
The invention discloses a kind of channel alignment system of slab guide class device and channel alignment method, which includes wideband light source, collimator and detector；Wideband light source is connect with the first optical fiber, the input terminal prealignment of the first optical fiber and device to be coupled, and any output channel prealignment of collimator and device to be coupled, collimator is connect with detector；Wideband light source is used to issue the optical signal of setting wavelength, and optical signal is after the first optical fiber, device to be coupled and collimator, by detector monitors, determines whether the channel of the first optical fiber and device to be coupled is aligned with the monitoring result according to detector.Channel alignment system of the invention solves the problems, such as that multichannel is automatically aligned in automatic coupling, by the mutual cooperation between wideband light source, collimator and detector, reduces the difficulty being coupled and aligned, improves coupling efficiency and product qualification rate.Moreover, system is simpler, cost is relatively low.
Description
Technical field
The invention belongs to technical field of photo communication, more particularly, to a kind of channel alignment system of slab guide class device
System and channel alignment method.
Background technique
Slab guide class device is widely used in optical communication field, mainly includes array waveguide grating (Arrayed
Waveguide Grating, is abbreviated as AWG), PLC (Planar Lightwave Circui, PLC) type adjustable attenuator and
MZI (Mach-Zehnder Interferometer, be abbreviated as MZI) type attenuator etc..
For example, Chinese patent CN102540350A, proposes a kind of temperature-insensitive type for realizing bilinearity temperature-compensating
Array waveguide grating, Chinese patent CN107608029A propose a kind of array adjustable optical attenuator and its decaying and production side
Method etc. is to the application field and advantage for introducing such devices.Such devices belong to planar optical waveguide class device, device chip shape
Formula is close, and therefore, planar optical waveguide class device can import in same automatic coupling production platform.It is made for producing in enormous quantities
Make, chip path channels are relatively narrow, and channel width is generally 4.4 μm X4.4 μm, port number it is more (for example, representative value be 4CH,
24CH, 48CH or 96CH etc.), interchannel is away from smaller (for example, 127 μm or 254 μm of representative value).The light coupled with optical device chip
Long and slender band (Fiber Array, be abbreviated as FA), for the fibre ribbons of single mode optical fiber production, core diameter is 9 μm, and cladding diameter is
125 μm, fibre core spacing representative value be 254 μm, fibre ribbons array channel number it is more (for example, representative value be single channel, 4CH, 12CH,
24CH, 48CH or 96CH etc.).Factors above causes slab guide class optical device chip to couple in production process with FA to be coupled and aligned
Difficulty is big, is also easy to produce channel alignment mistake phenomenon, eventually leads to the problems such as product coupling efficiency is low, qualification rate is low.
Currently, coupling manually for planar optical waveguide device chip with FA, channel alignment is carried out mainly by means of red light source,
Mode of operation are as follows: device chip input terminal to be coupled is accessed into red light source, by micro- sem observation feux rouges in FA and chip channel
Middle propagation condition checks whether to carry out channel alignment (coupling manually).For planar optical waveguide device chip and FA automatic coupling,
Since equipment does not have eye recognition red light source function, aforementioned coupling technique method is not suitable for automatic coupling, if exploitation
Visual identifying system difficulty is big, and cost is excessively high, and system is more complex.
In consideration of it, overcoming defect present in the prior art is the art urgent problem to be solved.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of channels of slab guide class device
To Barebone and channel alignment method, its object is to pass through the mutual cooperation between wideband light source, collimator and detector, drop
The low difficulty being coupled and aligned, improves coupling efficiency and product qualification rate.Moreover, system is simpler, cost is relatively low.
To achieve the above object, according to one aspect of the present invention, a kind of channel pair of slab guide class device is provided
Barebone, the channel alignment system include wideband light source, collimator and detector；
The wideband light source is connect with the first optical fiber, the input terminal prealignment of first optical fiber and device to be coupled, institute
Any output channel prealignment of collimator Yu the device to be coupled is stated, the collimator is connect with the detector；
The wideband light source is used to issue the optical signal for setting wavelength, and optical signal is through first optical fiber, described to be coupled
After device and the collimator, by the detector monitors, to determine first light according to the monitoring result of the detector
Whether the channel of the fine and described device to be coupled is aligned.
Preferably, the device to be coupled includes multiple input channels and multiple output channels；
The collimator specifically includes first collimator and the second collimator, the first collimator and the device to be coupled
One of output channel prealignment of part, second collimator and another output channel of the device to be coupled are pre- right
It is quasi-；
The detector specifically includes the first detector and the second detector, first detector and first collimation
Device connection, second detector are connect with second collimator, wherein the first collimator and second collimator
The distance between for the device to be coupled interchannel away from integral multiple；
The wideband light source is used to issue the optical signal for setting wavelength, and optical signal is through first optical fiber, described to be coupled
After device, the first collimator and second collimator, by first detector and second detector monitors, with
First optical fiber and the device to be coupled are determined according to the monitoring result of first detector and second detector
Channel whether be aligned.
Preferably, the channel alignment system further includes coupler, and the coupler is connect with the wideband light source, described
First optical fiber is connect with the coupler；
The coupler is used to optical signal being divided into two-way, and two ways of optical signals is separately input into the corresponding of the first optical fiber
In channel.
Preferably, after the channel alignment of first optical fiber and the device to be coupled, the device to be coupled it is defeated
Outlet and the second optical fiber prealignment, wherein the device to be coupled includes multiple output channels；
The detector specifically includes the first detector and the second detector, first detector and second optical fiber
The connection of one of channel, second detector connect with another channel of second optical fiber；
The wideband light source is used to issue the optical signal for setting wavelength, and optical signal is through first optical fiber, described to be coupled
After device and second optical fiber, by first detector and second detector monitors, according to first detection
The monitoring result of device and second detector determines whether the channel of second optical fiber and the device to be coupled is aligned.
Preferably, the channel alignment system includes test device, tunable laser, the polarizer and Polarization Control instrument, institute
It states tunable laser to connect with the polarizer, the polarizer is connect with the Polarization Control instrument；
In the device to be coupled respectively and after first optical fiber and second optical fiber align, first optical fiber with
The Polarization Control instrument connection, second optical fiber are connect with the test device；
Wherein, the tunable laser, the polarizer and the Polarization Control instrument cooperate jointly issues signal, the survey
Trial assembly is set for detecting signal, with being coupled and aligned for the determination device to be coupled and first optical fiber and second optical fiber
Whether situation meets the optical index of setting.
Preferably, the spot diameter of the collimator is less than the distance between the collimator and the device to be coupled；
The collimator is inclined relative to horizontal the angle of setting, wherein the angle of the setting is by described to be coupled
Depending on the end face inclination angle of device.
Preferably, the wave-length coverage for the optical signal that the wideband light source is exported is 800nm~1600nm, the broadband light
Source includes ASE wideband light source.
Preferably, the channel alignment system includes automatic coupling device, and the automatic coupling device is for coupling to coupling
Clutch part 1 and optical fiber 2, the automatic coupling device include: clamping device 3 and regulating mechanism 4, and the setting of clamping device 3 exists
On the regulating mechanism 4；
The clamping device 3 includes slide unit 31 and elastic component 32, and one end of the elastic component 32 is connect with the slide unit 31；
The clamping device 3 is used for grip optical fiber 2；The regulating mechanism 4 is used to adjust the posture of the clamping device 3；
During the regulating mechanism 4 adjusts the posture of the clamping device 3, shape is compressed according to the elastic component 32
The change of state monitors and touches state between the optical fiber 2 and the device 1 to be coupled, so that the end face of the optical fiber 2 and institute
The end face for stating device 1 to be coupled is parallel.
Preferably, the clamping device 3 further includes pedestal 33 and displacement sensor 341, and institute's displacement sensors 341 are arranged
On the pedestal 33, the other end of the elastic component 32 is connect with the pedestal 33；
Institute's displacement sensors 341 are used to detect change in displacement of the slide unit 31 relative to institute's displacement sensors 341,
To trigger the posture that the regulating mechanism 4 adjusts the clamping device 3；
Wherein, the change of 32 compressive state of elastic component is embodied in the slide unit 31 and passes relative to the displacement
The change in displacement of sensor 341.
It is another aspect of this invention to provide that providing a kind of channel alignment method of slab guide class device, the channel
Alignment methods are based on channel alignment system of the present invention and complete, and the channel alignment method includes:
First optical fiber is connected with the wideband light source, by the input of first optical fiber and the device to be coupled
Prealignment is held, by any output channel prealignment of the collimator and the device to be coupled；
Judge whether the detector monitors photoelectric current, the case where the photoelectric current monitored according to the detector,
Determine whether first optical fiber and the channel of the device to be coupled are aligned
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have following beneficial to effect
Fruit: a kind of channel alignment system that the present invention provides slab guide class device and channel are to firmly method, the channel alignment system packet
Include wideband light source, collimator and detector；Wideband light source is connect with the first optical fiber, the input terminal of the first optical fiber and device to be coupled
Prealignment, any output channel prealignment of collimator and device to be coupled, collimator are connect with detector.Channel of the invention
Solve the problems, such as that multichannel is automatically aligned in automatic coupling to Barebone, by between wideband light source, collimator and detector
It cooperates, reduces the difficulty being coupled and aligned, improve coupling efficiency and product qualification rate.Moreover, system is simpler, cost
It is lower.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described.It should be evident that drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of the first channel alignment system provided in an embodiment of the present invention；
Fig. 2 is the relative positional relationship between a kind of device to be coupled provided in an embodiment of the present invention and collimator；
Fig. 3 is the structural schematic diagram of second of channel alignment system provided in an embodiment of the present invention；
Fig. 4 is the auxiliary line schematic diagram that cross provided in an embodiment of the present invention looks for light method；
Fig. 5 is the structural schematic diagram of the third channel alignment system provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the 4th kind of channel alignment system provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of the 5th kind of channel alignment system provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of automatic coupling device provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of clamping device provided in an embodiment of the present invention；
Figure 10 is a kind of schematic view of the front view of clamping device provided in this embodiment；
Figure 11 is a kind of overlooking structure diagram of clamping device provided in this embodiment；
Figure 12 is the structural schematic diagram of another automatic coupling device provided in an embodiment of the present invention；
Figure 13 is the structural schematic diagram of another clamping device provided in an embodiment of the present invention；
Figure 14 is a kind of flow diagram of channel alignment method provided in an embodiment of the present invention；
Figure 15 is that a kind of Back Word provided in an embodiment of the present invention looks for the corresponding movement locus schematic diagram of light method.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the description of the present invention, term "inner", "outside", " longitudinal direction ", " transverse direction ", "upper", "lower", "top", "bottom" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention rather than
It is required that the present invention must be constructed and operated in a specific orientation, therefore it is not construed as limitation of the present invention.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.
Embodiment 1:
The present embodiment provides a kind of channel alignment systems of slab guide class device, as shown in Figure 1, the channel alignment system
System includes wideband light source, collimator and detector.
Wherein, the wave-length coverage for the optical signal that wideband light source is exported is 800nm~1600nm, in the preferred scheme,
The wave-length coverage for the optical signal that wideband light source is exported is 1528nm~1565nm.Such as the wideband light source includes ASE (amplification
Spontaneous radiation) wideband light source, the wideband light source also can choose other kinds of light source, here, being not specifically limited.In reality
Under the application scenarios of border, light source used in light is looked for as channel using ASE wideband light source, ASE wideband light source be widely used in production and
In laboratory, light source technology is mature, can make what detector was easier to detect light sensation, channel is easier to detection alignment.
Wherein, collimator is multimode collimator, and multimode collimator can receive the light of various modes, multimode collimator due to
Numerical aperture is larger, and detection light sensation range is larger, so that optical path is easier to be aligned.It in the present embodiment, can be straight according to hot spot
The characterisitic parameters such as diameter, operating distance and reception wavelength, select suitable collimator.
In the present embodiment, the wideband light source with the first optical fiber for connecting, first optical fiber and device to be coupled
Input terminal prealignment, any output channel prealignment of the collimator and the device to be coupled, the collimator and institute
State detector connection.Wherein, first optical fiber is optical fiber to be coupled.
In actual use, the wideband light source is used to issue the optical signal of setting wavelength, and optical signal is through first light
After fine, the described device to be coupled and the collimator, by the detector monitors, with true according to the monitoring result of the detector
Whether the channel of fixed first optical fiber and the device to be coupled is aligned.
Further, the channel alignment system further includes connector, and the connector is optical connector, wherein described
Connector can be FC connector, and the wideband light source and first optical fiber are established connection by connector, pass through company
Insertion Loss can be reduced by connecing device, be improved efficiency.In addition it is also possible to which the first optical fiber and wideband light source are built by the way of welding optic fibre
Vertical connection, alternatively, first optical fiber and wideband light source are established into connection using devices such as optical fiber align device or MPO connectors,
Selected type of attachment is not specifically limited herein, guarantees to meet coupling product optical specifications.
Wherein, the first optical fiber can may be multicore FA for single FA, for example, the first optical fiber can be to peel off optical fiber painting
The bare fibre of coating is applied to waveguide class optical device chip coupling measurement, end face using the bare fibre for peelling off optical fiber coating
Need to be smooth by optical fiber cutter cutting, to reduce fiber end face to optical path Insertion Loss IL, return loss RL and polarized dependent loss PDL etc.
Influence.
Under concrete application scene, the first optical fiber controls its movement by automatic fine tuning frame, makes it where coupling channel
In the range of move, in waveguide class optical device chip coupling process, waveguide coupled with optic fibre light path it is more sensitive to radial mismatch,
Radial mismatch coupling efficiency ηxIt can be calculated by following formula:
Wherein, ω is the mould spot diameter of Gauss light, and dx is the radial spacing of two optical axises.
Based on this, the end face of the first optical fiber is parallel with waveguide class optical device chip light inputting end face and then carries out looking for channel
Alignment.Component and levelling row involved in the end face of the first optical fiber and the levelling row in waveguide class optical device chip light inputting end face
Process can hereafter specifically describe.
When the first optical fiber is single-core fiber, the input terminal of the device to be coupled is single channel, the device to be coupled
When output end is multichannel, channel alignment can be carried out according to mode as shown in Figure 1.
In actual use, first detector is carried out depositing light, Insertion Loss in optical path is excluded, specifically, by detector and broadband
Light source connection, to carry out depositing light.Then, the first optical fiber is connect with wideband light source, specifically, connector and flange can be used
First optical fiber is connect by disk with wideband light source, then by the input terminal prealignment of the first optical fiber and device to be coupled, wherein can be adopted
It uses the semi-finished product after being coupled and aligned as object of reference, carries out prealignment.Finally, by the output of collimator and device to be coupled
Prealignment is held, can be using the semi-finished product after being coupled and aligned as object of reference, the current conditions detected by detector,
Judge to determine whether collimator is in prealigned position.
In the present embodiment, multimode collimator is made of C-Lens and contact pin, and wherein C-Lens optical parameter determines detection
Can device be easier to receive light.Multimode collimator central wavelength should be corresponding with wideband light source wavelength, general to choose multimode collimator
Central wavelength is 850nm or 1310nm, and bandwidth is 850/1310 ± 50nm.Multimode collimator operating distance should select suitably, with
Exempt from optical fiber and device to be coupled generates collision, multimode collimator front end is a lens, wherein operating distance in collimator by wrapping
The focal length of the lens contained, for example, representative value is 4mm, which depends on the radius of curvature of selected lens.Multimode collimator Insertion Loss IL
It should be as small as possible, generally require IL < 0.3dB, detect light sensation sensitivity to increase.
Under practical application scene, the spot diameter of collimator need to select appropriate value, if its diameter is too small, will make standard
Straight device and the more difficult alignment of device output end waveguide to be coupled, cannot receive the light that device to be coupled is exported；If multimode is straight
Diameter is excessive, and since distance is certain value between the adjacent waveguide of device to be coupled, and distance is smaller, and the light that collimator receives can
It can be the light of multiple waveguide channels outgoing, lead to mis-alignment.In a preferred embodiment, the spot diameter of the collimator is less than
The distance between the collimator and the device to be coupled, with guarantee collimator spot diameter and device phase to be coupled
Match.
In addition, as shown in Fig. 2, to increase return loss, being since the end face of device to be coupled is generally ground into certain inclination angle
The collimator is made to be easier to receive the light that device to be coupled is exported, the collimator is inclined relative to horizontal the angle of setting
Degree, wherein depending on end face inclination angle of the angle of the setting by the device to be coupled.
In the manner previously described, it after setting the relative position between the connection relationship and each component between each component, opens
Wideband light source is opened, if detecting electric current in detector side, the channel of the input terminal of the first optical fiber and device to be coupled coupling
Alignment is closed, the first optical fiber and device to be coupled are bonded together.
As shown in figure 3, detector specifically includes the first detector and the second detector, in the first optical fiber and device to be coupled
After alignment, collimator is removed, by the output end prealignment of the second optical fiber and device to be coupled, first detector and described the
One of channel of two optical fiber connects, and second detector is connect with another channel of second optical fiber.Wherein, institute
Stating the second optical fiber is optical fiber to be coupled, for example, first detector is connect with first channel of second optical fiber, it is described
Second detector is connect with the last one channel of second optical fiber.After being directed at one of channel by coupling algorithm, then
It is directed at another channel.At this point, device to be coupled and optical fiber be in the position of coarse alignment, optical path Insertion Loss is not while minimum at this time
, the rotation angle for needing that angular penalty method is looked for determine optical fiber according further to cross is finely adjusted optical fiber, so that optical path
Insertion Loss is minimum.
Specifically, by recording coordinate value when this two channel alignment, light method is looked for calculate the second optical fiber according to cross
Angle is rotated, to make two channels while be aligned.When two channels of the second optical fiber simultaneously be aligned after, the second optical fiber with to coupling
The alignment of clutch part.
Cross looks for the specific implementation of angular penalty method as follows:
As shown in figure 4, solid line indicates the section of the second optical fiber in the X-axis direction in figure, CH1 and CH2 are the second optical fiber
Two channels, wherein CH1 the second detector of connection, CH2 the first detector of connection, the spacing between channel C H1 and channel C H2
For L.The step of determining rotation angle is as follows: after foregoing manner carries out slightly looking for light, the second optical fiber is in initial position；With
One detector carries out cross and looks for light, and the channel C H2 on the second optical fiber is in optical path coupling position point A (x1, y1)；With the second detection
Device carries out cross and looks for light, and the channel C H1 on the second optical fiber is in optical path coupling position point C, and channel C H2 is in location point B at this time
(x2, y2) at.According to the coordinate of location point A and location point B, offset angle θ (that is, rotation angle) is calculated, by trigonometric function relationship
It can obtain:
Δ x=| x1-x2|
Δ y=| y1-y2|
Then, compensation angle θ conversion is angled indicates:
Finally, determining direction of rotation according to position A and position B, specifically: y1< y2When, THZ is rotated to positive direction；y1>
y2When, THZ is rotated to negative direction.
In the present embodiment, the end face of the second optical fiber is parallel with waveguide class optical device chip light-emitting end face and then carries out
Look for channel alignment.About the second optical fiber end face and the levelling row in waveguide class optical device chip light-emitting end face involved in component and
Parallel process is looked for, can hereafter be specifically described.
After device to be coupled is aligned with the first optical fiber and the second optical fiber, further the device after coupling is surveyed
Examination, to further determine that the situation that is coupled and aligned.Specifically, as shown in figure 5, the channel alignment system include test device, can
Adjusting laser, the polarizer and Polarization Control instrument, the tunable laser are connect with the polarizer, the polarizer and it is described partially
The controller that shakes connects.
In the device to be coupled respectively and after first optical fiber and second optical fiber align, first optical fiber with
The Polarization Control instrument connection, second optical fiber are connect with the test device；Wherein, the tunable laser, described
Inclined device and the Polarization Control instrument cooperate jointly issues signal, and the test device is described to coupling to determine for detecting signal
Whether the situation that is coupled and aligned of clutch part and first optical fiber and second optical fiber meets the optical index of setting, wherein
Optical index includes coupling insertion loss and central wavelength etc..
When the first optical fiber is multi-core optical fiber, the input terminal of the device to be coupled is multichannel, the device to be coupled
When output end is multichannel, channel alignment can be carried out according to mode as shown in FIG. 6.
In actual use, first detector is carried out depositing light, Insertion Loss in optical path is excluded, specifically, by detector and broadband
Light source connection, to carry out depositing light.Then, the first optical fiber is connect with wideband light source, specifically, connector and flange can be used
First optical fiber is connect by disk with wideband light source, then by the input terminal prealignment of the first optical fiber and device to be coupled, wherein can be adopted
It uses the semi-finished product after being coupled and aligned as object of reference, carries out prealignment.Finally, by the output of collimator and device to be coupled
Prealignment is held, can be using the semi-finished product after being coupled and aligned as object of reference, the case where electric current is detected by detector,
Judge to determine whether collimator is in prealigned position.
The collimator specifically includes first collimator and the second collimator, the first collimator and the device to be coupled
One of output channel prealignment of part, second collimator and another output channel of the device to be coupled are pre- right
It is quasi-.For example, the first collimator is connect with first channel of the device to be coupled, second collimator and it is described to
The last one channel of coupled apparatus connects.
The detector specifically includes the first detector and the second detector, first detector and first collimation
Device connection, second detector are connect with second collimator, wherein the first collimator and second collimator
The distance between for the device to be coupled interchannel away from integral multiple.
Further, the channel alignment system further includes coupler, and the coupler is connect with the wideband light source, institute
The first optical fiber is stated to connect with the coupler；The coupler is used to optical signal being divided into two-way, and two ways of optical signals is distinguished
It is input in the respective channel of the first optical fiber.
The wideband light source is used to issue the optical signal for setting wavelength, and optical signal is through first optical fiber, described to be coupled
After device, the first collimator and second collimator, by first detector and second detector monitors, with
First optical fiber and the device to be coupled are determined according to the monitoring result of first detector and second detector
Channel whether be aligned.
After relative position between connection relationship between the components and each component is set, wideband light source is opened,
If detecting electric current in detector side, in conjunction with the detection result of the first detector and the second detector, it is aligned by coupling algorithm
Behind one of channel, then it is directed at another channel.
The rotation angle of the first optical fiber is calculated by coordinate value when recording this two channel alignment, to make two channels
It is aligned simultaneously.After two channels of the first optical fiber are aligned simultaneously, the first optical fiber is aligned with device to be coupled, about rotation angle
Determination method can be calculated according to foregoing manner, here, repeating no more.
It has been coupled and aligned in the channel of the first optical fiber and the input terminal of device to be coupled, by the first optical fiber and device to be coupled
Part bonds together.
After the channel alignment of first optical fiber and the device to be coupled, carried out according to mode as shown in Figure 3 defeated
Outlet coupling, the output end of the device to be coupled and the second optical fiber prealignment, wherein the device to be coupled includes multiple defeated
Channel out；The detector specifically includes the first detector and the second detector, first detector and second optical fiber
The connection of one of channel, second detector connect with another channel of second optical fiber.
The wideband light source is used to issue the optical signal for setting wavelength, and optical signal is through first optical fiber, described to be coupled
After device and second optical fiber, by first detector and second detector monitors, according to first detection
The monitoring result of device and second detector determines whether the channel of second optical fiber and the device to be coupled is aligned.Example
Such as, first detector is connect with first channel of second optical fiber, second detector and second optical fiber
The last one channel connection.After being directed at one of channel by coupling algorithm, then it is directed at another channel.At this point, to coupling
Clutch part and optical fiber are in the position of coarse alignment, and optical path Insertion Loss is not the smallest at this time, needs to look for light method according further to cross
The rotation angle for determining optical fiber, is finely adjusted optical fiber, so that optical path Insertion Loss is minimum.
Specifically, by recording coordinate value when this two channel alignment, angular penalty method is looked for calculate according to cross
The rotation angle of two optical fiber, to make two channels while be aligned.After two channels of the second optical fiber are aligned simultaneously, the second light
It is fine to be aligned with device to be coupled.
After device to be coupled is aligned with the first optical fiber and the second optical fiber, further the device after alignment coupling is carried out
Test, to further determine that the situation that is coupled and aligned.Specifically, it is tested according to mode shown in fig. 5, here, no longer
It repeats.
In another optional scheme, according to the invertibity of optical path, second can be carried out according to mode as shown in Figure 7
Optical fiber is coupled with the alignment of device to be coupled.Specifically, channel alignment system includes wideband light source, connector, optical splitter, light
Adapter, collimator and detector, the wideband light source are successively connect with connector, optical splitter and optical adapter, wherein light
The signal that splitter is used to be emitted wideband light source is divided into two-way, and optical adapter is connect with the corresponding channel of the second optical fiber, the
Two optical fiber are aligned with the output channel of device to be coupled, and collimator is aligned with the input channel of device to be coupled, detector and standard
Straight device connection.
After relative position between connection relationship between the components and each component is set, wideband light source is opened,
If detecting electric current, the channel alignment of the second optical fiber and device to be coupled in detector side.
Under practical application scene, detector could alternatively be flash ranging test system, pass through optical tests system testing optics device
The optical index of part is to determine whether channel is aligned, such as RL, 0.5dB bandwidth, 1dB bandwidth, three dB bandwidth, 20dB bandwidth, center
The optical indexes such as wavelength or crosstalk
Referring next to embodiment 2, illustrate in the present embodiment, the input terminal and output end of optical fiber and device to be coupled into
The process of the structure of the levelling device of row and corresponding levelling row, after optical fiber is parallel with the input terminal of coupler and output end,
Channel alignment is carried out again.
Embodiment 2:
Refering to Fig. 8 and Fig. 9, the channel alignment system of the present embodiment further includes automatic coupling device, the automatic coupling device
For coupling device 1 to be coupled and optical fiber 2, wherein optical fiber 2 can be the first optical fiber in embodiment 1, or the second light
Fibre, the device to be coupled of the corresponding previous embodiment 1 of device 1 to be coupled, the automatic coupling device include: clamping device 3 and adjust
Mechanism 4 is saved, the clamping device 3 is arranged on the regulating mechanism 4.
In the present embodiment, the clamping device 3 includes slide unit 31 and elastic component 32, one end of the elastic component 32 and institute
State the connection of slide unit 31.Wherein, elastic component 32 can be spring, and the elastic force of spring is not easy excessive, otherwise will lead to device 1 to be coupled
Chipping.In an alternate embodiment of the invention, the maximum load of spring is 4N, and spring constant is greater than 1.0N/mm, in actual design process
In, the frictional force and other factors when slide unit 31 slides can be comprehensively considered, the spring of suitable parameters is selected, here, not doing
It is specific to limit.
During practical adjustments, the clamping device 3 is used for grip optical fiber 2, and the regulating mechanism 4 is described for adjusting
The posture of clamping device 3, during the regulating mechanism 4 adjusts the posture of the clamping device 3, according to the elastic component
The change of 32 compressive states monitors and touches state between the optical fiber 2 and the device 1 to be coupled, so that the optical fiber 2
End face is parallel with the end face of the device 1 to be coupled.It is parallel with the end face of the device 1 to be coupled in the end face of the optical fiber 2
Afterwards, then channel alignment operation is carried out.
Under concrete application scene, compressive state of the regulating mechanism 4 according to elastic component 32 adjusts the posture of clamping device 3.
With continued reference to Fig. 9, there are a kind of optional schemes for the present embodiment: the clamping device 3 further includes pedestal 33 and displacement sensor
341, institute's displacement sensors 341 are arranged on the pedestal 33, and the other end of the elastic component 32 is connect with the pedestal 33；
Institute's displacement sensors 341 are for detecting change in displacement of the slide unit 31 relative to institute's displacement sensors 341, to trigger
State the posture that regulating mechanism 4 adjusts the clamping device 3.Wherein, the change of 32 compressive state of elastic component, is embodied in
Change in displacement of the slide unit 31 relative to institute's displacement sensors 341.
Specifically, institute's displacement sensors 341 are accurate device, can detecte the change in displacement of micron level, institute
The probe of displacement sensors 341 is arranged towards the slide unit 31, and institute's displacement sensors 341 are by the slide unit 31 and institute's rheme
Faint change in displacement between the probe of displacement sensor 341 is converted to current value variation, changes detection slide unit 31 according to current value
Displacement, to monitor the collision status of 2 end face of optical fiber Yu 1 end face of device to be coupled.
Further, guide rail 35 is provided on the pedestal 33, the slide unit 31 passes through the guide rail 35 and the pedestal
33 are slidably connected；Limiting section 351 is provided on the guide rail 35, the limiting section 351 is respectively arranged at the elastic component 32
The two sides away from one another of the slide unit 31.Wherein, guide rail 35 is accurate device, and friction is small, and the slide unit 31 can be
It is put down on the guide rail 35 smooth free to slide.
Under concrete application scene, device to be coupled 1 and optical fiber 2 also not in contact with when, the slide unit 31 is relative to the base
Seat 33 is under original state, at this point, the left end of the slide unit 31 abuts limiting section 351, the elastic component 32 is in compression shape
State, so that power suffered by the right end of power suffered by the left end of the slide unit 31 and the slide unit 31 reaches equilibrium state.
In a preferred embodiment, it should be reserved between the probe and the slide unit 31 of institute's displacement sensors 341 enough
Initial distance, when being moved to avoid slide unit 31 on the direction of close displacement sensor 341, slide unit 31 and displacement sensor 341
Probe collide.Wherein, when initial distance refers to that the slide unit 31 is in original state relative to the pedestal 33, displacement is passed
The distance between the probe of sensor 341 and the slide unit 31.Wherein, initial distance can be any number in 300 μm~1000 μm
It is worth, depending on concrete foundation actual conditions.
In the present embodiment, the clamping device 3 further includes positioning component 36, and the positioning component 36 is arranged in the base
On seat 33, the positioning component 36 is located at the same side of the slide unit 31 with the elastic component 32；Wherein, in the optical fiber 2
After end face is parallel with the end face of the device 1 to be coupled, the positioning component 36 abuts the slide unit 31, so that the elastic component
32 state remains unchanged, and then guarantees that the end face of the optical fiber 2 and the end face of the device 1 to be coupled are a fixed value.So
Afterwards, then by capillary principle, ultraviolet glue is filled between the end face of the optical fiber 2 and the end face of the device to be coupled 1, is used
Ultraviolet light irradiation solidifies ultraviolet glue, to complete the coupling of optical fiber 2 Yu device 1 to be coupled.
In an alternate embodiment of the invention, positioning component 36 passes through pneumatic control, the cylinder in electromagnetism Vavle switching positioning component 36
Gas circuit switches positioning component 36 between two states of ejection and rebound.Under practical application scene, device to be coupled is being adjusted
During the depth of parallelism of the end face of the end face and optical fiber 2 of part 1, positioning component 36 is in rebound state (as shown in Figure 9), not to cunning
31 applied force of platform；After completing the depth of parallelism and adjusting, before dispensing, positioning component 36 is in ejection state, slide unit 31 is abutted, to cunning
31 applied force of platform, avoids during dispensing, 31 compression elastic piece 32 of slide unit movement, it is ensured that between device 1 and optical fiber 2 to be coupled
Distance immobilize.
Under practical application scene, the clamping device 3 further includes grip block 37, and the grip block 37 is arranged in the cunning
On platform 31, the grip block 37 is used for grip optical fiber 2.Wherein, the grip block 37 can be side holding, or push
Clamping, can be according to the suitable method of clamping of structural form selection of device 1 to be coupled, but, using the folder of side holding formula
When holding 37 grip optical fiber 2 of block, 2 lateral width consistency of optical fiber is preferable, is convenient for upper folder, is more preferred method of clamping.
As shown in Figure 10 and Figure 11, a specific clamping device 3 is shown.Wherein, grip block 37 includes the first clamping part
371, the second clamping part 372 and adjustment portion 373, optical fiber 2 is arranged between the first clamping part 371 and the second clamping part 372, described
Adjustment portion 373 is various sizes of with adaptation clamping for adjusting the distance between the first clamping part 371 and the second clamping part 372
Optical fiber 2.
Under concrete application scene, automatic coupling device further includes fixed platform 5, the fixed platform 5 for it is fixed to
Coupled apparatus 1.Wherein, the regulating mechanism 4 includes that X-axis adjusts component 41, Y-axis adjusts component 42, Z axis adjusts component 43, the
One rotation adjusts component 44 and the second rotation adjusts component 45, wherein and first rotation adjusts component 44 and rotates along X-axis, the
Two rotations adjust component 45 and rotate along Y-axis.The regulating mechanism 4 is including further including that third rotation adjusts component 46, the third
Rotation adjusts component 46 and rotates along Z axis.In the present embodiment, the regulating mechanism 4 can complete six degree of freedom adjusting, to adjust
The posture of whole clamping device 3, so that the end face of device to be coupled 1 is parallel with the end face of optical fiber 2.Under concrete application scene, adjust
Saving each adjusting component in mechanism 4 can improve automation by motor control.
Under practical application scene, as shown in figure 12, the number of regulating mechanism 4 and clamping device 3 can be two, tool
Body, the regulating mechanism 4 specifically includes the first regulating mechanism 4-1 and the second regulating mechanism 4-2；The number of the clamping device 3
Mesh is two, and the clamping device 3 specifically includes the first clamping device 3-1 and the second clamping device 3-2.First clamping device
3-1 is arranged on the first regulating mechanism 4-1, and the second clamping device 3-2 is arranged in the second regulating mechanism 4-2
On；The first clamping device 3-1 and the second clamping device 3-2 is in be oppositely arranged relative to the fixed platform 5；It is described
First regulating mechanism 4-1 and the second regulating mechanism 4-2 is in be oppositely arranged relative to the fixed platform 5.This programme from
Dynamic coupling device is applicable not only to unilateral coupling and applies also for bilateral coupling, and one time coupling operation can be completed at the same time double sided frontal
Coupling, be particularly suitable for what the input terminal of device 1 to be coupled and the output end of device 1 to be coupled were required to couple with optical fiber 2
Scene.
The present embodiment detects the compressive state of elastic component 32, there is also another optional scheme in order to regulating mechanism 4
Adjust the posture of clamping device 3.As shown in figure 13, the clamping device 3 further includes pressure sensor 342, the pressure sensing
Device 342 is arranged on the pedestal 33, and the other end of the elastic component 32 is connect with the pressure sensor 342；The pressure
Sensor 342 is used to detect the force variation of the elastic component 32, adjusts the clamping device 3 to trigger the regulating mechanism 4
Posture.
The present embodiment detects the force variation situation of elastic component 32 by pressure sensor 342, to determine elastic component 32
Compressive state determines the posture of the distance between slide unit 31 and pedestal 33 and then clamping device 3.
The automatic coupling device of the present embodiment, during regulating mechanism 4 adjusts the posture of clamping device 3, elastic component
32 are in compressive state, can be to avoid the back skating under gravity of slide unit 31 during adjusting faces parallel, can
More accurately monitor slide unit 31 displacement variation, effectively to adjust the posture of clamping device 3 so that the end face of optical fiber 2 with to
The end face of coupled apparatus 1 is parallel, and consistency is preferable.
By means of the automatic coupling device of the present embodiment, the relative position of optical fiber and device to be coupled is adjusted, so that by light
Fine end face is parallel with the end face of device to be coupled, on the basis of end face is parallel, is led to according still further to the mode of previous embodiment 1
Road alignment.
Embodiment 3:
Refering to fig. 14, based on the above embodiment 1 and embodiment 2, the present embodiment provides a kind of the logical of slab guide class device
Road alignment methods, the channel alignment method are based on channel alignment system above-mentioned and complete, and the channel alignment method includes
Following steps:
Step 101: first optical fiber being connected with the wideband light source, by first optical fiber and the device to be coupled
The input terminal prealignment of part, by any output channel prealignment of the collimator and the device to be coupled.
Step 102: judging whether the detector monitors photoelectric current, the photoelectric current monitored according to the detector
The case where, determine whether first optical fiber and the channel of the device to be coupled are aligned.
After the input terminal channel alignment of first optical fiber and the device to be coupled, by the second optical fiber and described to coupling
The output end channel alignment of clutch part.
Concrete methods of realizing about the present embodiment is referred to embodiment 1, is briefly described as follows device to be coupled
With the alignment procedures of the first optical fiber and the second optical fiber.
In the present embodiment, in conjunction with the channel alignment system of foregoing description, by collimator setting in prealigned position, collimation
Any channel prealignment of device and device output end to be coupled, by the output end prealignment of the first optical fiber and device to be coupled,
In, it during looking for channel, is moved respectively according to particular track, the maximum point of photoelectric current in optical range is found, by optical fiber
With device prealignment to be coupled.Such as can carry out looking for channel by " Back Word looks for light " or " bow word looks for light ", it is detected in detector
When to electric current, determine that the first optical fiber and the input terminal of device to be coupled are aligned.
Below with reference to Fig. 8 and Figure 15, illustratively Back Word looks for the process of light: by taking Back Word looks for light twice as an example, leading in optical fiber
Road CH1 is moved in X/Y plane (reference axis as shown in connection with fig. 8) by certain track, and motion profile is as shown in figure 15, channel
CH1 moves to B point from A point, samples in motion process to optical signal simultaneously, detects C point pair closer from spot center
The photoelectric current answered is maximum, and the channel C H1 of optical fiber is moved to C point by B point in XY sectional plane.One is carried out again since C point
Secondary Back Word looks for light, and channel C H1 moves to D point from C point, detects that the corresponding photoelectric current of E point closer from spot center is maximum, looks for
To photoelectric current maximum point E, wherein E point is spot center or the point that look for optical range interior nearest from spot center, by the channel of optical fiber
CH1 moves to E point by D point in XY sectional plane, by optical fiber and device prealignment to be coupled.
Wherein, bow word looks for light to look for light similar with Back Word, and the main distinction is that the track moved is different, channel C H1 in optical fiber
It is moved in X/Y plane by particular track, the maximum point of photoelectric current in optical range is found, thus by optical fiber and device to be coupled
Alignment.
Then, collimator is removed, the output end prealignment of the second optical fiber and device to be coupled, the first detector and second
Detector is connect with two channels of the second optical fiber respectively, determines first channel by " Back Word looks for light " or " bow word looks for light ",
When detector detects electric current, first channel alignment of the second optical fiber Yu device to be coupled is determined；Again by the way that " Back Word is looked for
Light " or " bow word looks for light " determine second channel, when detector detects electric current, determine the second optical fiber and device to be coupled
Second channel alignment.Assuming that first channel is CH1, second channel is CHn, first channel C H1 and second channel C Hn
After being respectively aligned to, angular penalty method is looked for using cross, obtains the position coordinates of first channel C H1 and second channel C Hn,
Rotation angle is determined according to the position coordinates of first channel C H1 and second channel C Hn, rotates described the by rotation angle
Two optical fiber, so that first channel C H1 and second channel C Hn have photoelectric current simultaneously, to complete device to be coupled and second
The alignment of output optical fibre.Wherein, cross looks for angular penalty method to be referred to embodiment 1, and details are not described herein.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of channel alignment system of slab guide class device, which is characterized in that the channel alignment system includes broadband light
Source, collimator and detector；
The wideband light source is connect with the first optical fiber, the input terminal prealignment of first optical fiber and device to be coupled, the standard
Any output channel prealignment of straight device and the device to be coupled, the collimator are connect with the detector；
The wideband light source is used to issue the optical signal of setting wavelength, and optical signal is through first optical fiber, the device to be coupled
After the collimator, by the detector monitors, with according to the monitoring result of the detector determine first optical fiber and
Whether the channel of the device to be coupled is aligned.
2. channel alignment system according to claim 1, which is characterized in that the device to be coupled includes that multiple inputs are logical
Road and multiple output channels；
The collimator specifically includes first collimator and the second collimator, the first collimator and the device to be coupled
One of output channel prealignment, another output channel prealignment of second collimator and the device to be coupled；
The detector specifically includes the first detector and the second detector, and first detector and the first collimator connect
It connects, second detector is connect with second collimator, wherein between the first collimator and second collimator
Distance be the device to be coupled interchannel away from integral multiple；
The wideband light source is used to issue the optical signal for setting wavelength, optical signal through first optical fiber, the device to be coupled,
After the first collimator and second collimator, by first detector and second detector monitors, with basis
The monitoring result of first detector and second detector determines the logical of first optical fiber and the device to be coupled
Whether road is aligned.
3. channel alignment system according to claim 2, which is characterized in that the channel alignment system further includes coupling
Device, the coupler are connect with the wideband light source, and first optical fiber is connect with the coupler；
The coupler is used to optical signal being divided into two-way, and two ways of optical signals is separately input into the respective channel of the first optical fiber
In.
4. channel alignment system according to claim 1, which is characterized in that in first optical fiber and the device to be coupled
After the channel alignment of part, the output end of the device to be coupled and the second optical fiber prealignment, wherein the device to be coupled includes
Multiple output channels；
The detector specifically includes its of the first detector and the second detector, first detector and second optical fiber
In the connection of channel, second detector connect with another channel of second optical fiber；
The wideband light source is used to issue the optical signal of setting wavelength, and optical signal is through first optical fiber, the device to be coupled
After second optical fiber, by first detector and second detector monitors, with according to first detector and
The monitoring result of second detector determines whether second optical fiber and the channel of the device to be coupled are aligned.
5. channel alignment system according to claim 4, which is characterized in that the channel alignment system includes test dress
Set, tunable laser, the polarizer and Polarization Control instrument, the tunable laser are connect with the polarizer, the polarizer with
The Polarization Control instrument connection；
In the device to be coupled respectively and after first optical fiber and second optical fiber align, first optical fiber with it is described
The connection of Polarization Control instrument, second optical fiber are connect with the test device；
Wherein, the tunable laser, the polarizer and the Polarization Control instrument cooperate jointly issues signal, the test dress
It sets for detecting signal, with the situation that is coupled and aligned of the determination device to be coupled and first optical fiber and second optical fiber
Whether satisfaction setting optical index.
6. channel alignment system according to claim 1, which is characterized in that the spot diameter of the collimator is less than described
The distance between collimator and the device to be coupled；
The collimator is inclined relative to horizontal the angle of setting, wherein the angle of the setting is by the device to be coupled
End face inclination angle depending on.
7. channel alignment system according to claim 1, which is characterized in that the optical signal that the wideband light source is exported
Wave-length coverage is 800nm~1600nm, and the wideband light source includes ASE wideband light source.
8. channel alignment system according to claim 1, which is characterized in that the channel alignment system includes automatic coupling
Device, the automatic coupling device include clamping for coupling device to be coupled (1) and optical fiber (2), the automatic coupling device
Mechanism (3) and regulating mechanism (4), the clamping device (3) are arranged on the regulating mechanism (4)；
The clamping device (3) includes slide unit (31) and elastic component (32), one end and the slide unit of the elastic component (32)
(31) it connects；
The clamping device (3) is used for grip optical fiber (2)；The regulating mechanism (4) is used to adjust the appearance of the clamping device (3)
State；
During the regulating mechanism (4) adjust the posture of the clamping device (3), compressed according to the elastic component (32)
The change of state monitors and touches state between the optical fiber (2) and the device (1) to be coupled, so that the optical fiber (2)
End face is parallel with the end face of the device (1) to be coupled.
9. channel alignment system according to claim 8, which is characterized in that the clamping device (3) further includes pedestal
(33) it is arranged on the pedestal (33) with displacement sensor (341), institute's displacement sensors (341), the elastic component (32)
The other end connect with the pedestal (33)；
Institute's displacement sensors (341) are used to detect the slide unit (31) and become relative to the displacement of institute's displacement sensors (341)
Change, to trigger the posture that the regulating mechanism (4) adjust the clamping device (3)；
Wherein, the change of elastic component (32) compressive state, is embodied in the slide unit (31) and passes relative to the displacement
The change in displacement of sensor (341).
10. a kind of channel alignment method of slab guide class device, which is characterized in that the channel alignment method is based on such as right
It is required that 1~9 described in any item channel alignment systems and complete, the channel alignment method includes:
First optical fiber is connected with the wideband light source, the input terminal of first optical fiber and the device to be coupled is pre-
Alignment, by any output channel prealignment of the collimator and the device to be coupled；
Judge whether the detector monitors photoelectric current, the case where the photoelectric current monitored according to the detector, determines
Whether the channel of first optical fiber and the device to be coupled is aligned.
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