CN109239841A - Fiber array, optical module and fiber-optic coupling method - Google Patents
Fiber array, optical module and fiber-optic coupling method Download PDFInfo
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- CN109239841A CN109239841A CN201811191773.7A CN201811191773A CN109239841A CN 109239841 A CN109239841 A CN 109239841A CN 201811191773 A CN201811191773 A CN 201811191773A CN 109239841 A CN109239841 A CN 109239841A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
- G02B6/08—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images with fibre bundle in form of plate
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
Abstract
The present invention provides a kind of fiber array, optical module and fiber-optic coupling method.Fiber array includes fibre ribbon, and fibre ribbon includes at least one the first optical fiber and a plurality of second optical fiber, and the core diameter of the first optical fiber is greater than the core diameter of the second optical fiber, and the core diameter of the first optical fiber is greater than or equal to 50 microns.Fiber array, optical module and fiber-optic coupling method provided by the invention waste time when solving fiber coupling in the prior art, and the problem of low efficiency.
Description
Technical field
The present invention relates to communication technique field more particularly to a kind of fiber arrays, optical module and fiber-optic coupling method.
Background technique
As optic communication, internet etc. develop rapidly, data transmission and processing speed develop to higher rate, silicon photon skill
Art becomes one of high speed optical communication device and the solution of system.In high-speed data communication field, silicon photonic integrated circuits
Very big concern is obtained, but the coupling package technique of silicon light is always difficult point, especially (English is Fiber to fiber array
ArraY, abbreviation FA) coupling package, need to take into account the coupled optical power in multiple channels.Optical fiber in fiber array is largely
The single mode optical fiber that about 8~10 microns of core diameter.Existing fiber array and silicon optical chip be coupled as it is three-dimensional couple, i.e. X, Y, θ.X
And X-direction and Y-direction in rectangular coordinate system of the Y in the coupling surface between fiber array and silicon optical chip, θ are fiber array company
Angle between line and silicon optical chip grating coupler line.
Since the core diameter of optical fiber with the size of silicon optical chip with optical fiber differs larger in fiber array, fiber array and silicon light
It when chip couples, needs to repeat multiple coupling operation, is aligned with silicon optical chip with to find the core diameter of optical fiber in fibre array
Then θ is adjusted to zero degree by position by way of coupling, to complete θ, X, Y three-dimensional coupling between fiber array and silicon optical chip
It closes.
But repeatedly carry out fiber array and silicon optical chip coupling operation, time-consuming and low efficiency.
Summary of the invention
The present invention provides a kind of fiber array, optical module and fiber-optic coupling method, solves fiber coupling in the prior art
When, it wastes time, and the problem of low efficiency.
In a first aspect, the present invention provides a kind of fiber array, including fibre ribbon, fibre ribbon includes at least one the first optical fiber
With a plurality of second optical fiber, the core diameter of the first optical fiber is greater than the core diameter of the second optical fiber, and it is micro- that the core diameter of the first optical fiber is greater than or equal to 50
Rice.
Second aspect, the present invention provides a kind of optical modules, including circuit board, silicon optical chip and above-mentioned fiber array；
Chip and fiber array are respectively provided on circuit boards, and light output end and the chip of fiber array are of coupled connections.
The third aspect, the present invention provides a kind of fiber-optic coupling methods, for silicon optical chip and above-mentioned fiber array
It is coupled, method includes:
Position coupling operation is carried out respectively to two different optical fiber in fiber array, so that two optical fiber and silicon optical chip
It is in coupling position between upper corresponding channel, two optical fiber are the second optical fiber, and are in the optical fiber and first of coupling position
Loop is constituted between optical fiber；
According to fiber array in position coupling operation twice the displacement of one of optical fiber and two optical fiber it is logical
Spacing between road determines deflection angle of the fiber array relative to silicon optical chip；
The angle coupling operation of fiber array is carried out according to deflection angle.
Fiber array, optical module and fiber-optic coupling method provided by the invention, fiber array are greater than the by using core diameter
First optical fiber of the core diameter of two optical fiber, specifically, the core diameter of the first optical fiber is greater than or equal to 50 microns.It reduces in fiber array
Gap between the core diameter of first optical fiber and the size of silicon optical chip, and then it is easily found fiber array and silicon optical chip channel is equal
The position of alignment reduces the number of coupling operation, improves work efficiency, saves coupling time.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 provides a kind of structural schematic diagram of fiber array for the embodiment of the present invention；
Fig. 2 provides a kind of structural schematic diagram of fibre ribbon in fiber array for the embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of optical module provided in an embodiment of the present invention；
Fig. 4 couples schematic diagram with fiber array for a kind of silicon optical chip；
Fig. 5 is a kind of flow chart of fiber-optic coupling method provided in an embodiment of the present invention；
Fig. 6 be in a kind of fiber-optic coupling method provided in an embodiment of the present invention an optical fiber and channel corresponding on chip it
Between be in coupling position figure；
Fig. 7 is another optical fiber and channel corresponding on chip in a kind of fiber-optic coupling method provided in an embodiment of the present invention
Between be in coupling position figure；
Fig. 8 is the structure chart that deflection angle is determined in a kind of fiber-optic coupling method provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of fiber coupling device provided in an embodiment of the present invention.
Description of symbols
100-the first optical fiber；
200-the second optical fiber；
300-silicon optical chips；
400-fiber coupling devices；
401-position coupling units；
402-processors；
403-angle coupling units；
500-shells；
600-circuit boards.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In the description of specification, it is to be understood that the orientation or positional relationship of the instructions such as term " parallel ", " vertical "
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as
Limitation of the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.
In the description of specification, the meaning of " plurality " is multiple, such as two, three, four etc., unless otherwise clear
It is specific to limit.
Existing fiber array and silicon optical chip be coupled as it is three-dimensional couple, i.e. X, Y, θ.X and Y is fiber array and silicon light
X-direction and Y-direction in the rectangular coordinate system in coupling surface between chip, θ are fiber array line and silicon optical chip grating coupling
Angle between clutch line.Theoretically, when θ is zero, it can just combine the optical power value in each channel while reach most
It is good.Fig. 4 is that a kind of silicon optical chip couples schematic diagram with fiber array, and shown in Figure 4, fiber array and silicon optical chip respectively have 12
The spacing of a channel, fiber array adjacency channel spacing and silicon optical chip adjacency channel is equal.12 channels of fiber array
It draws a straight line, 12 channels of silicon optical chip draw a straight line (rectilinear direction is Y-direction), due to difference clamping light
Fibre array is coupled with silicon optical chip, and when coupling, two straight lines have the angle theta being not zero under normal circumstances.Light
Be coupled to silicon optical chip channel 12 from fiber array channel 12, from silicon optical chip channel 6 go out light, coupled into fiber array channel 6,
The light power for monitoring optical fiber 6 at this time just knows the coupling condition in channel 12；Light is coupled to silicon optical chip from fiber array channel 9
Channel 9 goes out light, coupled into fiber array channel 6 from silicon optical chip channel 6, and the light power of monitoring optical fiber 6 at this time is just known logical
The coupling condition in road 9.
The coupling process of fiber array and silicon optical chip in Fig. 4, comprising the following steps: clamping fiber array and silicon light respectively
Chip, the optical power of monitor channel 12 carry out XY coupling, record the maximum luminous power value P1 of XY connecting curve；By fiber array
To direction (such as clockwise) one angle (such as 0.05 °) of rotation, XY coupling is carried out, the maximum of XY connecting curve is recorded
Optical power value P2 compares P1, P2 size as P2 > P1, then continues to rotate angle in the direction of the clock and do XY coupling, records XY
The maximum luminous power value P3 of connecting curve, compares the size of P3 and P2, continues to rotate angle if P3 > P2 in the direction of the clock simultaneously
The movement for doing XY coupling ... repetition or more, rotates stepping angle, and XY coupling compares the coupled optical power size of rotation front and back, directly
To a maximum performance number PmaX is coupled to, PmaX is more than or equal to P1, P2, P3 ... Pn of step before.Then it is believed that partially
Rotational angle theta coupling terminates, and θ is adjusted to zero degree by way of coupling, that is, completes the coupling of θ, X, Y three-dimensional.As P2 < P1, then
By reverse rotation angle (rotation angle of usually this step is bigger than the rotation angle of the first step) counterclockwise and XY coupling is done, records XY coupling
The maximum luminous power value P3 for closing curve, continues to rotate angle counterclockwise if P3 > P1 and does XY coupling, record XY coupling
The maximum luminous power value P4 of curve, compares the size of P4 and P3, continues to rotate angle counterclockwise if P4 > P3 and is XY
Movement more than coupling ... repetition, rotates stepping angle, and XY coupling compares the coupled optical power size of rotation front and back, until coupling
It closes to a maximum performance number PmaX, P1, P2, P3 ... Pn of step before PmaX is more than or equal to.Then it is believed that deflection angle theta
Coupling terminates, and θ is adjusted to zero degree by way of coupling, that is, completes the coupling of θ, X, Y three-dimensional.
Fig. 1 provides a kind of structural schematic diagram of fiber array for the embodiment of the present invention；Fig. 2 provides one for the embodiment of the present invention
The structural schematic diagram of fibre ribbon in kind fiber array.Referring to figure 1 and figure 2, fiber array provided in this embodiment, including light
Fibre ribbons, fibre ribbon include at least one the first optical fiber 100 and a plurality of second optical fiber 200, and the core diameter of the first optical fiber 100 is greater than second
The core diameter of the core diameter of optical fiber 200, the first optical fiber 100 is greater than or equal to 50 microns.
The coupling process of fiber array in the prior art and silicon optical chip, just because of the core diameter of optical fiber in fiber array
It differs larger with the size of silicon optical chip with optical fiber, when progress fiber array is coupled with silicon optical chip X, Y, is difficult to find optical fiber array
Then column 300 pass through θ with the position that 12 channels of silicon optical chip are aligned therefore, it is necessary to repeat multiple coupling operation
The mode of coupling is adjusted to zero degree, is coupled with completing θ, X, Y three-dimensional between fiber array and silicon optical chip 300.And the present embodiment
In, fiber array is greater than the first optical fiber of the core diameter of the second optical fiber 200 by using core diameter using the optical fiber of two kinds of different core diameters
100, specifically, the core diameter of the first optical fiber 100 is greater than or equal to 50 microns.Reduce the core of the first optical fiber 100 in fiber array
Gap between diameter and the size of silicon optical chip 300, and then be easily found fiber array and be aligned with the channel of silicon optical chip 300
Position, reduce the number of coupling operation, improve work efficiency, save coupling time.
In specific implementation, fiber array provided in this embodiment, the first optical fiber 100 and the second optical fiber 200 are arranged side by side
And at least one layer that is at least arranged side by side.That is the first optical fiber 100 and the second optical fiber 200 are arranged side by side as one layer or the first optical fiber
100 and second optical fiber 200 to be arranged side by side be two layers or two layers or more, every layer is parallel to each other, every layer of the first optical fiber 100 and second
Optical fiber 200 corresponding can be arranged, and can also mutually stagger, and the present embodiment is it is not limited here.
Further, the outside of fiber array provided in this embodiment, fibre ribbon arranges the second optical fiber 200.That is,
When first optical fiber 100 and the second optical fiber 200 are arranged side by side, first is the second optical fiber 200 with the last one optical fiber, and core diameter is big
It is arranged in fibre ribbon in the first optical fiber 100 of the core diameter of the second optical fiber 200, so that fiber array and 300 coupling of silicon optical chip
When conjunction, it is easier to the position that fiber array is aligned with the channel of silicon optical chip 300 is found, the number of coupling operation is reduced,
It improves work efficiency, saves coupling time.
In concrete implementation, when the first optical fiber 100 and the second optical fiber 200 are arranged side by side, when the quantity of the first optical fiber 100
When being one, the first optical fiber 100 is located at the middle position of fibre ribbon, when the quantity of the first optical fiber 100 is two, along arrangement
Direction fibre ribbon is divided into three sections, two the first optical fiber 100 are located at intermediate two positions divided equally.It can certainly adopt
The first optical fiber 100 and the second optical fiber 200 are arranged with its mode, as long as the first optical fiber 100 and the second optical fiber 200 are arranged side by side
When, first is the second optical fiber 200 with the last one optical fiber, and the present embodiment is it is not limited here.
Specifically, fiber array provided in this embodiment, the spacing between two adjacent the first optical fiber 100 is equal, phase
Spacing between adjacent two the first optical fiber 100 and the second optical fiber 200 is equal.That is, between optical fiber in fibre ribbon is uniform
Every setting, in this way, be easier to find the position that fiber array is aligned with the channel of silicon optical chip 300,
As a kind of optional mode, fiber array provided in this embodiment further includes shell 500, and shell 500 includes base
Plate and fibre ribbon fixing seat；The end of fibre ribbon is located on substrate, and fibre ribbon fixing seat is for the fixed optical fiber being located on substrate
Band.When specific implementation, with the equal groove of spacing on substrate, the end of the end of the first optical fiber 100 and the second optical fiber 200 is equal
It after removing cladding, is placed in groove, fibre ribbon is fixed in the groove on substrate by fibre ribbon fixing seat.
Specifically, multimode fibre can be used in the first optical fiber 100；Single mode optical fiber can be used in second optical fiber 200.
Fig. 3 is a kind of structural schematic diagram of optical module provided in an embodiment of the present invention.Shown in Figure 3, the present embodiment mentions
A kind of optical module, including circuit board 600, silicon optical chip 300 and fiber array provided by the above embodiment are supplied；
Silicon optical chip 300 and fiber array are arranged on circuit board 600, the light output end and silicon optical chip of fiber array
300 are of coupled connections.
Wherein, in the above-described embodiments to be described in detail, the present embodiment will not repeat them here the structure of fiber array.
The light output end of optical module provided in this embodiment, fiber array couples company by grating coupler with silicon optical chip
It connects.
Fig. 5 is a kind of flow chart of fiber-optic coupling method provided by the invention.Shown in Figure 5, the present embodiment provides one
Kind fiber-optic coupling method, for coupling to fiber array and chip, fiber array includes that at least one core diameter is greater than or waits
In 50 microns of the first optical fiber and a plurality of second optical fiber, fiber-optic coupling method includes:
S101, position coupling operation is carried out respectively to two different optical fiber in fiber array, so that two optical fiber and core
Coupling position is between the corresponding channel of on piece, two optical fiber are the second optical fiber, and the optical fiber in coupling position and the
Loop is constituted between one optical fiber.
Specifically, two different optical fiber can select fiber array one outermost second optical fiber 200, Yi Jixuan respectively
Select the second optical fiber 200 between the first optical fiber 100 and fiber array one outermost second optical fiber 200.It takes as far as possible and first
First optical fiber 100 of the optical fiber 100 between farther away second optical fiber 200 and second optical fiber 200 and the first optical fiber 100
Position coupling operation (or another second optical fiber 200 being closer with the first optical fiber 100) is carried out respectively, such spacing
Greatly, and the deflection angle of acquisition is more accurate.Also, when the coupling operation of position, optimal coupling position is selected.
Since the core diameter of the first optical fiber 100 is greater than or equal to 50 microns, also commonly referred to as large core fiber, above-mentioned position is selected
Two the second optical fiber 200, between two the second optical fiber 200 and corresponding channel on silicon optical chip 300 of above-mentioned position point
Other places are able to maintain in coupling position when coupling position, between the first optical fiber 100 and corresponding channel on silicon optical chip 300
It sets, after the second optical fiber 200 of two different locations carries out position coupling operation respectively, can be constituted between the first optical fiber 100
Loop.200 entering light of the second optical fiber could be passed through in this way, the first optical fiber 100 goes out light, to detect light power.
In specific implementation, the first optical fiber 100 is multimode fibre, and multimode fibre allows the light of different mode in an optical fiber
The core diameter (also referred to as core diameter) of upper transmission, multimode fibre will be generally greater than or equal to 50 microns, and less than 125 microns.Second light
Fibre 200 be single mode optical fiber, about 8~10 microns of the core diameter of single mode optical fiber.Relative to single mode optical fiber, the core diameter of multimode fibre compared with
Greatly.
In specific implementation, the first optical fiber 100 is corresponding with the alternate channel in silicon optical chip 300.When specifically used,
First optical fiber 100 is not used in transmission optical signal.
S102, according to fiber array in position coupling operation twice the displacement of one of optical fiber and two optical fiber
Channel between spacing determine deflection angle of the fiber array relative to chip.
Specifically, being determined that two optical fiber are corresponding on chip respectively using three-dimensional coupling when due to fiber coupling and having led to
Between road after coupling position, it is also necessary to determine deflection angle of the fiber array relative to chip.
S103, the angle coupling operation that fiber array is carried out according to deflection angle.
Fiber-optic coupling method provided in this embodiment, the fiber array of use include that at least one core diameter is greater than or equal to 50
The first optical fiber and a plurality of second optical fiber of micron, by carrying out position coupling behaviour respectively to two different optical fiber in fiber array
Make, so as to be in coupling position between two optical fiber and channel corresponding on chip, two optical fiber are the second optical fiber, and are in
Loop is constituted between the optical fiber of coupling position and the first optical fiber.According to fiber array in position coupling operation twice one of them
Spacing between the channel of the displacement of optical fiber and two optical fiber determines deflection angle of the fiber array relative to chip.According to inclined
The angle coupling operation of corner progress fiber array.It is greater than or equal to 50 microns of the first optical fiber using core diameter, does not influence function
The performance of channel fiber transmission, and can realize the quick calculating of deflection angle between fiber array and chip by the first optical fiber, adjust
Zero, the fiber coupling time is saved, coupling efficiency is improved.
In specific implementation, fiber-optic coupling method provided in this embodiment, to two different optical fiber point in fiber array
Not carry out position coupling operation, specifically include:
The coordinate in optical fiber coordinate in the X direction and Y-direction is adjusted separately, so that on optical fiber and silicon optical chip 300
Coupling position is between corresponding channel, wherein the channel of Y-direction chip in the coupling surface between light array and chip
Between line direction, X-direction is the direction vertical with Y-direction in coupling surface.
It should be noted that the optical fiber in fiber array is largely about 8~10 microns of core diameter of single mode optical fiber, and chip
Size differ larger with optical fiber core diameter.Therefore, when optical fiber carries out position coupling, need first to adjust optical fiber in the position of coupling surface
It sets.The coupling position that optical fiber is determined in the present embodiment defines coupling surface of the Y-direction between light array and chip
Line direction between the channel of middle chip, X-direction are direction vertical with Y-direction in coupling surface.The present embodiment is without being limited thereto,
As long as X-direction and Y-direction can also be exchanged can determine optical fiber and phase on silicon optical chip 300 by two orthogonal coordinates
Coupling position is between the channel answered.
Further, fiber-optic coupling method provided in this embodiment, according to fiber array in position coupling operation twice
Spacing between the channel of the displacement of one of optical fiber and two optical fiber determines the deflection angle of fiber array, specific to wrap
It includes:
With fiber array in position coupling operation twice the channel of the displacement of one of optical fiber and two optical fiber it
Between spacing respectively as two sides of triangle, determine the angle of apex angle corresponding with displacement in triangle；
The angle of apex angle corresponding with displacement in triangle is determined as to the deflection angle of fiber array.
In specific implementation, with fiber array in position coupling operation twice the displacement of one of optical fiber and two
Spacing between the channel of optical fiber determines the angle of apex angle corresponding with displacement in triangle respectively as two sides of triangle
Degree, specifically includes:
Deflection radian is calculated according to formula (1),
In formula (1),
θ is the corresponding radian of angle of apex angle corresponding with displacement in triangle, converts angle for radian, i.e.,
Obtain deflection angle；
L is the spacing between the channel of two optical fiber, as long as fiber array determines, which is fixed spacing；
DrFor the displacement of fiber array one of optical fiber in position coupling operation twice.
Deflection angle explanation is carried out in the form of fiber array and chip respectively have this common normal structure in 12 channels below.
As shown in figure 4, fiber array and chip respectively have 12 channels, between fiber array adjacency channel spacing and chip by chip channel
Away from equal.12 multi-channel optical fiber arrays are common normal structure forms, send out 4 devices received for 4,9 on the outside of fiber array~
12 channels and 1~4 channel are the function channel that 4 hairs 4 receive device, and 5~8 intermediate channels are accessory channel or discarded channel.
12 channels of fiber array draw a straight line, and 12 channels of chip draw a straight line.
Plus sige indicates the channel of fiber array in Fig. 4, and rectangle indicates the channel of chip, the from left to right sequence in channel in Fig. 4
Number be followed successively by 1,2 ... 12.The first optical fiber 100 in fiber array selects the corresponding optical fiber in fiber array channel 6, the second light
Fibre 200 distinguishes selector channel 9 and the corresponding optical fiber in channel 12.
Fig. 6 be in a kind of fiber-optic coupling method provided in an embodiment of the present invention an optical fiber and channel corresponding on chip it
Between be in coupling position figure.
As shown in fig. 6, position coupling is carried out to the corresponding optical fiber in channel 12, at this point, constituting ring between channel 6 and channel 12
Road, by 12 entering light of channel, channel 6 goes out light, to detect light power.Fig. 7 is a kind of optical fiber coupling provided in an embodiment of the present invention
Coupling position figure is in conjunction method between another optical fiber and channel corresponding on chip.
As shown in fig. 7, moving fiber array, carries out position coupling to the corresponding optical fiber in channel 9, at this point, channel 6 and channel
Loop is constituted between 9, by 9 entering light of channel, channel 6 goes out light, to detect light power.
Fig. 8 is the structure chart that deflection angle is determined in a kind of fiber-optic coupling method provided in an embodiment of the present invention.Such as Fig. 8 institute
Show, D in Fig. 8rFor the displacement of fiber array 12 optical fiber of channel in the coupling operation of position twice in channel 12 and channel 9, L is
Spacing between the channel of 9 two optical fiber in channel 12 and channel calculates deflection radian according to formula (1), radian is converted
For angle, the deflection angle of fiber array can be obtained.
Wherein, twice position coupling operation when channel 12 optical fiber displacement can be calculated by formula (2):
In formula (2), X1And Y1When respectively the first secondary coupling, the corresponding optical fiber in channel 12 carries out the side X when the coupling of position
Coordinate on upward coordinate and Y-direction；X2And Y2When respectively the second secondary coupling, the corresponding optical fiber in channel 12 carries out position
The coordinate on coordinate and Y-direction when coupling in X-direction.
Optionally, fiber-optic coupling method provided in this embodiment couples behaviour according to the angle that deflection angle carries out fiber array
After work, further includes: carry out position coupling operation to fiber array again.
Specifically, optical fiber different in selection fiber array carries out position coupling operation again, and position coupling behaviour again
The number of work in limited fine coupling time, improves coupling qualification rate no more than twice.
Fig. 9 is a kind of structural schematic diagram of fiber coupling device provided in an embodiment of the present invention.As shown in figure 9, this implementation
Example also provides a kind of fiber coupling device, for coupling to fiber array and silicon optical chip 300.
Wherein, fiber array includes the first optical fiber 100 and a plurality of second that at least one core diameter is greater than or equal to 50 microns
Optical fiber 200, fiber coupling device 400 include:
Position coupling unit 401, for carrying out position coupling operation respectively to two different optical fiber in fiber array, with
Making in coupling position between two optical fiber and corresponding channel on silicon optical chip 300, two optical fiber are the second optical fiber 200,
And loop is constituted between the optical fiber and the first optical fiber 100 in coupling position；
Processor 402, for the displacement according to fiber array one of them optical fiber in position coupling operation twice
Spacing between amount and the channel of two optical fiber determines deflection angle of the fiber array relative to silicon optical chip 300；
Wherein, fiber array displacement of one of them optical fiber in position coupling operation twice passes through processor
Process control stepper motor in 402 realizes, processor 402 reads the displacement, and and the channel of two optical fiber between
Spacing determines deflection angle of the fiber array relative to silicon optical chip 300.
Angle coupling unit 403, for carrying out the angle coupling operation of fiber array according to deflection angle.
The present embodiment provides also a kind of optical transmission systems, including above-mentioned fiber array.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of fiber array, which is characterized in that including fibre ribbon, the fibre ribbon includes at least one the first optical fiber and a plurality of
Second optical fiber, the core diameter of first optical fiber are greater than the core diameter of second optical fiber, and the core diameter of first optical fiber is greater than or waits
In 50 microns.
2. fiber array according to claim 1, which is characterized in that first optical fiber and second optical fiber are arranged side by side
Column and at least one layer that is at least arranged side by side.
3. fiber array according to claim 2, which is characterized in that the outside of the fibre ribbon arranges second light
It is fine.
4. fiber array according to claim 2, which is characterized in that the spacing between first optical fiber of adjacent two
Equal, the spacing between first optical fiber of adjacent two and second optical fiber is equal.
5. fiber array according to claim 1, which is characterized in that further include shell, the shell includes substrate and light
Fibre ribbons fixing seat；
The end of the fibre ribbon is located on the substrate, and the fibre ribbon fixing seat is for the fixed institute being located on the substrate
State fibre ribbon.
6. fiber array according to claim 1-5, which is characterized in that first optical fiber is multimode fibre.
7. fiber array according to claim 1-5, which is characterized in that second optical fiber is single mode optical fiber.
8. a kind of optical module, which is characterized in that including circuit board, silicon optical chip and the described in any item optical fiber of claim 1-7
Array；
The chip and the fiber array are arranged on the circuit board, the light output end of the fiber array and the silicon
Optical chip is of coupled connections.
9. optical module according to claim 8, which is characterized in that the light output end of the fiber array and the chip are logical
Grating coupler is crossed to be of coupled connections.
10. a kind of fiber-optic coupling method, for carrying out coupling to silicon optical chip and the described in any item fiber arrays of claim 1-8
It closes, which is characterized in that the described method includes:
Position coupling operation is carried out respectively to two different optical fiber in the fiber array, so that two optical fiber and the silicon light
Coupling position is on chip between corresponding channel, two optical fiber are second optical fiber, and are in the coupling
Loop is constituted between the optical fiber of position and first optical fiber；
According to the fiber array displacement of one of them optical fiber and two in position coupling operation twice
Spacing between the channel of optical fiber determines deflection angle of the fiber array relative to the silicon optical chip；
The angle coupling operation of the fiber array is carried out according to the deflection angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811191773.7A CN109239841B (en) | 2018-10-12 | 2018-10-12 | Optical fiber array, optical module and optical fiber coupling method |
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| CN105518498A (en) * | 2013-07-26 | 2016-04-20 | 康宁光电通信有限责任公司 | Fiber Optic Ribbon |
| CN105717577A (en) * | 2016-03-31 | 2016-06-29 | 武汉光迅科技股份有限公司 | Manufacturing method for optical fiber array for optical coupling and coupling method and device |
| CN108474912A (en) * | 2016-01-28 | 2018-08-31 | 索尼公司 | Optical connector and light delivery module |
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| CN101375195A (en) * | 2006-10-03 | 2009-02-25 | 古河电气工业株式会社 | Coated optical fiber ribbon |
| JP2013088767A (en) * | 2011-10-21 | 2013-05-13 | Fujikura Ltd | Optical axis alignment method, method of manufacturing optical fiber array unit, and optical fiber array unit |
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