CN105929494A - Optical module - Google Patents

Optical module Download PDF

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Publication number
CN105929494A
CN105929494A CN201610511007.9A CN201610511007A CN105929494A CN 105929494 A CN105929494 A CN 105929494A CN 201610511007 A CN201610511007 A CN 201610511007A CN 105929494 A CN105929494 A CN 105929494A
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CN
China
Prior art keywords
lens subassembly
electric signal
driving chip
flexible board
signal interface
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Granted
Application number
CN201610511007.9A
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Chinese (zh)
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CN105929494B (en
Inventor
徐海强
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Hisense Broadband Multimedia Technology Co Ltd
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Hisense Broadband Multimedia Technology Co Ltd
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Priority to CN201610511007.9A priority Critical patent/CN105929494B/en
Publication of CN105929494A publication Critical patent/CN105929494A/en
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Publication of CN105929494B publication Critical patent/CN105929494B/en
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Classifications

    • 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
    • G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
    • 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
    • G02B6/4274—Electrical aspects
    • G02B6/4279—Radio frequency signal propagation aspects of the electrical connection, high frequency adaptations

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

The invention discloses an optical module and solves the problem of PCB wiring difficulty in the prior art. The optical module comprises a circuit board, a lens assembly and a fiber adapter corresponding to the lens assembly, wherein the driving chip of the lens assembly communicates with electric signal interfaces on a specific position area on the circuit board to reduce intersects of communicating channels between the electric signal interfaces on the specific position area and the driving chip. The electric signal interfaces on the specific position area are determined according to the types of the optical assemblies driven by the driving chip, and types and arrangement of each electric signal interface on the circuit board. A jumper wire device of the lens assembly communicates with the fiber adapter through an optical fiber ribbon. The sequence of the optical fiber ribbon accessing to the channels on the jumper wire device side is different from the sequence of the optical fiber ribbon accessing to the channels on the fiber adapter side. The optical module accesses the electric signal interfaces on the specific position area to the driving chip, which reduces or eliminates intersects of PCB wirings.

Description

A kind of optical module
Technical field
The present embodiments relate to technical field of photo communication, particularly relate to a kind of optical module.
Background technology
In high-speed parallel optical module field, along with the increase of light path, the raising of module integrated level, and transmission Improving constantly of speed, especially 25Gbps speed Multipath parallel optical module, to pcb board material, difference in module Sub-signal track lengths, number of vias etc. have higher requirement.Wiring difficulty is increasing, and very difficult control is arrived Optimum level.Especially more in light path, such as 12/24/48 passage this high density high-speed parallel optical module, lead to Often have many abundant high-speed differential signal passages of IC parallel output, the high-speed differential signal on PCB Cabling can be extremely complex, wants to accomplish that cabling is the shortest, without via/few via can be highly difficult.
In order to solve cabling difficulty, it will usually increase pcb board layer, increase via, increase complicated coiling etc. Means.But these means can cause connecting up difficulty to be increased, and PCB cost increase, especially in parallel channel Time more, it may appear that PCB trace complexity, coiling, multiple vias etc. design, track lengths increases and mistake Hole increase causes high-speed electrical signals cannot meet module performance, this is because track lengths increases, and line loss Very big, cause the signal of telecommunication of poor quality, the signal of telecommunication eye pattern of module can be excessively poor, ultimately results in optical module There is error code or under-sensitive problem in signal transmission, affect the overall performance of optical module.
It addition, along with the lifting of optical module complexity, the special-shaped PCB of some Rigid Flexs the most gradually should Using high-speed optical module field, PCB trace difficulty is bigger in this case, even cannot connect up.
To sum up, prior art is needed a kind of scheme to optimize the cabling of optical module badly.
Summary of the invention
The embodiment of the present invention provides a kind of optical module, asks in order to solve the cabling difficulty on the circuit board of optical module Topic, to promote the transmission performance of optical module.
The embodiment of the present invention provides a kind of optical module, including: circuit board, lens subassembly, and with described The fiber adapter that mirror assembly is corresponding；
The driving chip of described lens subassembly is with the electric signal interface of specified location area on described circuit board even Logical, with the friendship of the communicating passage of the electric signal interface Yu described driving chip that reduce described specified location area Fork；Wherein, the electric signal interface of described specified location area, the optical assembly driven according to described driving chip On type, described circuit board, type and the arrangement of each electric signal interface determine；
The bridle wire apparatus of described lens subassembly is connected by fibre ribbon with described fiber adapter, wherein, described Fibre ribbon accesses the channel sequence of described bridle wire apparatus side, accesses described fiber adapter side with described fibre ribbon Channel sequence different.
In the optical module that the embodiment of the present invention provides, position specified by the driving chip of lens subassembly and circuit board The electric signal interface connection in region, the bridle wire apparatus of lens subassembly is connected by fibre ribbon with fiber adapter, In order to make the nothing of the electric signal interface communicating passage with driving chip intersect or intersect, in the embodiment of the present invention less The electric signal interface accessing driving chip is the electric signal interface of specified location area, and specified location area Electric signal interface is the class of each electric signal interface on the optical assembly type according to driving chip driving, circuit board Type and arrangement determine.And the electric signal interface accessing driving chip in prior art is according to fiber adapter The predetermined intelligent acess order in side determines.Owing to the electric signal interface of specified location area is linked into driving core The channel sequence that the order of sheet accesses bridle wire apparatus side with fibre ribbon is consistent, and fibre ribbon incoming fiber optic adapter The channel sequence of side is typically access set in advance order, and the optical fiber in embodiment of the present invention fibre ribbon is permissible Intersect, out of order after access fiber adapter so that the intelligent acess in fibre ribbon is suitable to fiber adapter side Sequence meets default access order, and therefore, compared with prior art, in the embodiment of the present invention, fibre ribbon accesses and jumps The channel sequence of line apparatus side, different from the channel sequence of fibre ribbon incoming fiber optic adapter side.In optical module What the optical fiber in portion transmitted is optical signal, and optical fiber arbitrarily intersects, and has not both interfered with the transmission of optical signal, also will not Affect the performance of optical module.Therefore, the electric signal interface of specified location area is linked into by the embodiment of the present invention Driving chip, it is ensured that electric signal interface intersects with the nothing of the communicating passage of driving chip or intersects less, solves PCB trace difficult problem present in prior art, can reach PCB trace largest optimization, and cabling is smooth and easy, Cabling is short, coiling is few, reduces unnecessary via or without via, and then has ensured the steady of optical module transmission performance Qualitative.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, with this Bright embodiment is used for explaining the present invention together, is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 a to Fig. 1 e is the design of the multi-channel circuit plate cabling of optical module of the prior art；
The structural representation of a kind of optical module that Fig. 2 provides for the embodiment of the present invention；
The circuit board trace structural representation of a kind of optical module that Fig. 3 a to Fig. 5 provides for the embodiment of the present invention；
The structural representation that a kind of fibre ribbon that Fig. 6 provides for the embodiment of the present invention intersects；
The light mouth of a kind of optical module that Fig. 7 a provides for the embodiment of the present invention makes a reservation for the structural representation of access order Figure；
The signal of telecommunication pin of each electric signal interface of a kind of optical module that Fig. 7 b provides for the embodiment of the present invention The schematic diagram of definition；
The circuit board trace structural representation of a kind of optical module that Fig. 8 provides for the embodiment of the present invention；
The schematic diagram of actual cabling on the circuit board of a kind of optical module that Fig. 9 provides for the embodiment of the present invention；
Wire jumper dress in the lens subassembly of a kind of optical module that Figure 10 to Figure 12 provides for the embodiment of the present invention Put the annexation schematic diagram between fiber adapter；
The wire jumper dress that the lens subassembly on a kind of first flexible board that Figure 13 provides for the embodiment of the present invention is corresponding Put the structural representation of the channel sequence of the fibre ribbon of side；
The wire jumper dress that the lens subassembly on a kind of second flexible board that Figure 14 provides for the embodiment of the present invention is corresponding Put the structural representation of the channel sequence of the fibre ribbon of side；
On a kind of first flexible board that Figure 15 provides for the embodiment of the present invention, the fibre ribbon of bridle wire apparatus side is logical Road accesses the structural representation of the first fiber adapter after intersecting；
On a kind of second flexible board that Figure 16 provides for the embodiment of the present invention, the fibre ribbon of bridle wire apparatus side is logical Road accesses the structural representation of the second fiber adapter after intersecting
The assembling schematic diagram of a kind of optical module that Figure 17 to Figure 20 provides for the embodiment of the present invention.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and effective clearer, with The preferred embodiments of the present invention are illustrated by lower combination Figure of description, it will be appreciated that described herein Preferred embodiment is merely to illustrate and explains the present invention, is not intended to limit the present invention.And do not conflict In the case of, the embodiment in the application and the feature in embodiment can be mutually combined.
For the optical module design of the optical module customized or passage more (such as 12,24,48 passages), High-speed differential signal connector, golden finger etc. are to launching the signal of telecommunication and receiving the pin of the signal of telecommunication on circuit board Definition, the definition of fiber outlet passage, it is typically derived from customer demand or MSA regulation, inside modules sets Meter cannot change these external conditions.If multiple chips parallel workings occur in module, export many groups together High-speed differential signal, the cabling on circuit board there will be difficulty.
As shown in Figure 1a, conventional wiring thinking is first by the light mouth order of fiber adapter side, (fibre ribbon The access order of respective channel, it is common that natural order), determine that the passage of the fibre ribbon of bridle wire apparatus side is suitable Sequence, the optical fiber in fibre ribbon is without intersecting, and therefore, the channel sequence of the fibre ribbon of bridle wire apparatus side is fitted with optical fiber The light mouth order of orchestration side is identical, further according to the channel sequence of the fibre ribbon of bridle wire apparatus side, determines and wire jumper The electric signal interface that the driving chip that device is corresponding should access, leads to driving chip with these electric signal interfaces Cross holding wire connection, such as differential signal line.Because each electric signal interface on PCB is according to the signal of telecommunication Pin definition is arranged, and the arrangement of each electric signal interface does not has rule, the most out of order arrangement.This Sample, when the passage in optical module is more, when driving chip is more, each driving chip connects with each signal of telecommunication Intersection, coiling or many vias will be there is in the passage between Kou.
Fig. 1 a has been diagrammatically only by out bridle wire apparatus corresponding to part driving chip (chip 1 and chip 2) and optical fiber The connection of adapter side, if the passage access order of the fibre ribbon corresponding with chip 1 is TX01-TX02 -TX03-TX04, then the order of the electric signal interface that chip 1 accesses is TX01-TX02-TX03-TX04, The passage access order of the fibre ribbon corresponding with chip 2 is TX05-TX06-TX07-TX08, then chip 2 The order of the electric signal interface accessed is TX05-TX06-TX07-TX08, usual electric signal interface TX01, Arrangement on TX02, TX03, TX04, TX05, TX06, TX07, TX08 plate is out of order, therefore The intersection of holding wire or the coiling of holding wire will necessarily be there is when cabling.
When number of chips is more, in the face of cabling difficult problem, it is common that set in terms of PCB layout Meter, optical fiber does not adjusts order.Conventional cabling uses coiling, increases via, blind vein hole, the mode in HDI hole Realize wiring.But the increase of via can cause further problems, as loss increases, impedance continuity becomes The problems such as difference, the transmission impact of corresponding high speed signal is very big, particularly 25Gbps high speed signal.Also may be used Suitably to increase PCB trace layer, but increase routing layer, in addition it is also necessary to use back drill, HDI to fold the techniques such as hole Assist and reduce the Insertion Loss of via and improve impedance continuity.
Such as, a kind of use increase PCB trace layer in the example realizing PCB layout, PCB trace layer Increasing to 10 layers, wherein, the wiring layer of high-speed differential signal line is distributed in four layers, (sees including top layer Fig. 1 b), the 2nd layer (seeing Fig. 1 c), in the 7th layer (seeing Fig. 1 d) and the bottom (seeing Fig. 1 e) Differential signal line.These wiring layers need to use 3 HDI holes, rank to realize, and folded hole manufacturing process is complicated, and And folded hole difficult quality controls, in a word, the technique of layering is extremely complex, if passage and driving chip Continuing to increase, wiring difficulty will be bigger.
In order to solve many coilings, the cabling that in prior art, multichannel optical module exists when PCB trace Interference between the signal of telecommunication that many intersection, many vias etc. cause, and then affect the problem of optical module transmission performance, The present inventor proposes the PCB trace scheme that conventional wires thinking a kind of and of the prior art is contrary.
The inventive concept of the present invention is: for the circuit board wiring of high density Multipath parallel optical module, not from light The light mouth order of fine adapter side, determines the electric signal interface that driving chip side joint enters, but in turn, root According to the substantially distributed areas of electric signal interface, first determine electric signal interface and which position in which region Driving chip connects, can reach cabling shorter, without intersecting or few intersecting, then, according to driving chip pair The electric signal interface region answered, determines the channel sequence of the electric signal interface accessing driving chip, accesses and drives The channel sequence of the electric signal interface of chip, the channel sequence of bridle wire apparatus sidelight fibre ribbons corresponding with driving chip Unanimously, because the passage access order of fiber adapter sidelight fibre ribbons is changeless, and driving core is accessed The electric signal interface of sheet is the electric signal interface of specified location area, so the passage of bridle wire apparatus sidelight fibre ribbons Order can be variant with the passage access of the fibre ribbon of fiber adapter side order, and the solution of the present invention is passed through will The passage (i.e. optical fiber) of bridle wire apparatus sidelight fibre ribbons carries out intersecting, out of order after incoming fiber optic adapter side again, The channel sequence of fiber adapter sidelight fibre ribbons and the logical of predetermined fiber adapter sidelight fibre ribbons can be met Road access order coupling.Fiber adapter in the embodiment of the present invention can also replace with the joints of optical fibre, or Light mouth adapter.
Conceiving based on foregoing invention, the embodiment of the present invention provides a kind of optical module as shown in Figure 2, including: Circuit board, lens subassembly, and the fiber adapter corresponding with lens subassembly；Include in lens subassembly driving Chip and bridle wire apparatus；Driving chip in lens subassembly, with the signal of telecommunication of specified location area on circuit board Orifice, with intersecting of the communicating passage of the electric signal interface with driving chip that reduce specified location area； The bridle wire apparatus of lens subassembly is connected by fibre ribbon with fiber adapter, and wherein, described fibre ribbon accesses institute State the channel sequence of bridle wire apparatus side, access the channel sequence of described fiber adapter side not with described fibre ribbon With, after i.e. accessing the optical fiber intersection in the fibre ribbon of bridle wire apparatus side, incoming fiber optic adapter side so that connect The channel sequence of the fibre ribbon entering fiber adapter side meets the pre-routing access order of fine adapter side.
As in figure 2 it is shown, the type of the electric signal interface on circuit board, including launching electric signal interface TX (1～n) With reception electric signal interface RX (1～n), usual launched on electric signal interface correspondence fibre ribbon Transmission channel, a reception passage received on electric signal interface correspondence fibre ribbon, an optical module Transmission channel is identical with the quantity receiving passage, and such as, an optical module is 48 passages, then include 24 Transmission channel and 24 receive passages, and circuit board connects with transmission channel, the signal of telecommunication that receives passage corresponding Mouth is 48 altogether.Generally each electric signal interface position on circuit boards immobilizes, and each Launch the signal of telecommunication and each receives the signal of telecommunication pin that signal of telecommunication position on circuit boards specifies with client Definition is consistent, and therefore, each electric signal interface position on circuit boards can not be changed.
In the embodiment of the present invention, the electric signal interface of the specified location area corresponding with driving chip, is basis Optical assembly type that driving chip drives, on circuit board the type of each electric signal interface and arrangement determine, Purpose is to make the electric signal interface communicating passage with driving chip without intersecting, or few intersects.It is to say, it is many One-to-one relationship is there is, often in individual driving chip with the electric signal interface of multiple specified location area on circuit board One driving chip is all to there being the electric signal interface of specified location area, and each driving chip institute is right The electric signal interface of the specified location area answered is all unique.
In the embodiment of the present invention, the communicating passage between electric signal interface and driving chip can be high-speed-differential Holding wire, the electric signal interface on circuit board is Difference signal pair, such as the transmitting electric signal interface of numbered 1 For Difference signal pair (TX01_P, TX01_N).
For a driving chip, the electric signal interface of access has logical order, accesses driving chip The order of electric signal interface is consistent with the channel sequence from bridle wire apparatus incoming fiber optic band.In Fig. 2, access To the electric signal interface of chip 1, the passage of the fibre ribbon corresponding with from bridle wire apparatus access chip 1 exists one One corresponding relation, is linked into the electric signal interface of chip 2, the light corresponding with from bridle wire apparatus access chip 2 There is one-to-one relationship in the passage of fibre ribbons.
Such as, the transmitting electric signal interface of specified location area on the circuit board of driving chip 1 correspondence, including (TX04_P, TX04_N), (TX11_P, TX11_N), (TX06_P, TX06_N), (TX01_P, And the order of the electric signal interface that accesses driving chip 1 is TX04-TX11-TX06-TX01_N), TX01, then access driving chip 1 by four groups of signals of telecommunication of access order parallel output, driving light emission group These four groups of signals of telecommunication are converted into four groups of optical signals by part, and four groups of light are believed by the bridle wire apparatus of driving chip 1 correspondence Number import to fibre ribbon transmits, access the optical fiber of bridle wire apparatus with 4 light cores as these four groups of optical signals Transmission channel.Because being linked into the electric signal interface of driving chip, with leading to from bridle wire apparatus incoming fiber optic band There is one-to-one relationship in road, the order of the electric signal interface accessing driving chip 1 is TX04-TX11 -TX06-TX01, therefore, is also TX04 from the order of these four optical channels of bridle wire apparatus incoming fiber optic band -TX11-TX06-TX01。
But, it is pre-specified that fibre ribbon is linked into the predetermined access order at fiber adapter light mouth, Can not arbitrarily change.In order to make to be linked into channel sequence and the fiber adapter light of fiber adapter from fibre ribbon Predetermined access sequence consensus at Kou, carries out cross processing by the optical-fibre channel of fibre ribbon, will connect by fibre ribbon Enter the passage (optical fiber) of bridle wire apparatus side, access fiber adapter side after intersection so that fibre ribbon accesses light The channel sequence of fine adapter side meets predetermined access order.Such as, fibre ribbon accesses the logical of bridle wire apparatus side Road order is: TX04-TX11-TX06-TX01, and fibre ribbon accesses the passage of fiber adapter side after intersecting Order is TX01-TX04-TX06-TX11, and the schematic diagram that optical fiber intersects can be found in Fig. 6.According to the present invention The fibre ribbon cross processing mode of embodiment, fibre ribbon accesses the channel sequence of bridle wire apparatus side, with fibre ribbon The channel sequence of incoming fiber optic adapter side is different.
The optical module of the embodiment of the present invention is multichannel optical module, and the lens subassembly in above-mentioned optical module is many Individual, one or more driving chip can be included in each lens subassembly, each driving chip correspondence wire jumper fills Put a fibre ribbon of side.
Further, wiring between each electric signal interface on the most multiple driving chip and circuit board, Multiple lens subassemblies in optical module can be arranged on flexible board, and flexible board passes through electric connector and circuit board Connect；The driving chip in multiple lens subassemblies on flexible board completes cloth with the electric signal interface on circuit board After line, flexible board is stacked with circuit board, and then by the bridle wire apparatus of each lens subassembly by a plurality of fibre ribbon Assemble with fiber adapter.
Further, in order to reduce the driving chip communicating passage with the electric signal interface of specified location area Length, in the embodiment of the present invention, driving chip position on flexible board, near corresponding with driving chip The electric signal interface of specified location area view field on flexible board.It is to say, at flexible board and electricity Before road plate is stacked, driving chip is corresponding with the electric signal interface of specified location area, and driving chip Position, is arranged nearby with the electric signal interface of specified location area.Therefore, corresponding with driving chip appointment The electric signal interface of the band of position, also relevant with driving chip position on flexible board.
In the embodiment of the present invention, the optical assembly type that driving chip drives, including light emission component and light-receiving Assembly, for the lens subassembly in the embodiment of the present invention, the optical assembly class driven according to internal driving chip Type, can be divided into first kind lens subassembly, Equations of The Second Kind lens subassembly and the 3rd class lens subassembly, wherein, One class lens subassembly only includes the driving chip for driving light emission component；Equations of The Second Kind lens subassembly both included For driving the driving chip of light emission component, include again the driving chip for driving light-receiving assembly；The Three class lens subassemblies only include the driving chip for driving light-receiving assembly.
In the embodiment of the present invention, the multiple lens subassemblies on arbitrary flexible board, including first kind lens subassembly, Part in Equations of The Second Kind lens subassembly and the 3rd class lens subassembly or combination.If an it is to say, flexibility The light mouth of the fiber adapter that lens subassembly on plate is corresponding for receiving light outlets, then multiple on a flexible board Lens subassembly, can include first kind lens subassembly and the 3rd class lens subassembly, can include first kind lens Assembly and Equations of The Second Kind lens subassembly, can include Equations of The Second Kind lens subassembly and the 3rd class lens subassembly, it is also possible to Include first kind lens subassembly, Equations of The Second Kind lens subassembly and the 3rd class lens subassembly simultaneously.
Illustrate below in conjunction with the accompanying drawings, optical assembly type that the embodiment of the present invention drives according to driving chip, circuit On plate, the type of each electric signal interface and arrangement, determine that driving chip connects with the signal of telecommunication of specified location area The concrete mode of the corresponding relation of mouth.
First, according to the type of each electric signal interface on circuit board and arrangement, to the signal of telecommunication on circuit board Interface area divides.
Electric signal interface on circuit board, including launching electric signal interface and receiving electric signal interface；Launch electricity Signaling interface distributed areas on circuit boards are emitting area, receive electric signal interface on circuit boards point Cloth region is receiving area, and on circuit board, the type of each electric signal interface and arrangement, can refer to accompanying drawing 7b The structural representation of the signal of telecommunication pin definition that each shown electric signal interface is corresponding.
As shown in Figure 3 a, after the electric signal interface region on circuit board divides, emitting area TX includes: lean on The primary importance region of nearly receiving area, and the second position region away from receiving area；Receiving area RX Including: near the 3rd band of position of emitting area, and the 4th band of position away from emitting area.
Secondly, according to the division in the electric signal interface region on circuit board, determine that lens subassembly is on flexible board Approximate location.
Because of the multiple lens subassemblies on arbitrary flexible board, including first kind lens subassembly, Equations of The Second Kind lens subassembly With the part in the 3rd class lens subassembly or combination.Each lens subassembly and electricity can be determined according to following condition The relative position relation of the regional of the electric signal interface on the plate of road.
If optical module includes that multiple first kind lens subassembly, the most multiple first kind lens subassemblies are distributed in nearby The both sides of one band of position；As shown in Figure 3 a, including driving chip 3 and the lens subassembly of driving chip 4 A1, and include that the lens subassembly A2 of driving chip 9 and driving chip 10 is first kind lens subassembly, The quantity of first kind lens subassembly is 2, and 2 first kind lens subassemblies are distributed in primary importance region nearby Both sides so that the driving chip 9 in driving chip 3,4 and lens subassembly A2 in lens subassembly A1, 10 connect with the electric signal interface in primary importance region respectively.
If optical module includes that multiple Equations of The Second Kind lens subassembly, the most multiple Equations of The Second Kind lens subassemblies are distributed in nearby Two bands of position and the both sides of the 3rd band of position, as shown in Figure 3 a, including driving chip 1 and driving core The lens subassembly B1 of sheet 2, and include that the lens subassembly B2 of driving chip 7 and driving chip 8 is first Class lens subassembly, the quantity of Equations of The Second Kind lens subassembly is 2, and 2 Equations of The Second Kind lens subassemblies are distributed in second The band of position and the both sides of the 3rd band of position so that driving chip 1 and driving chip 7 and second position district The signal of telecommunication in electric signal interface connection in territory, driving chip 2 and driving chip 8 and the 3rd band of position Orifice.
If optical module includes that multiple 3rd class lens subassembly, the most multiple 3rd class lens subassemblies are distributed in nearby The both sides of four bands of position.As shown in Figure 3 a, including driving chip 5 and the lens subassembly of driving chip 6 C1, and include that the lens subassembly C2 of driving chip 11 and driving chip 12 is the 3rd class lens subassembly, The quantity of the 3rd class lens subassembly is 2, and 2 the 3rd class lens subassemblies are distributed in the 4th band of position nearby Both sides so that driving chip 5,6,11,12 is respectively with the electric signal interface in primary importance region even Logical.
Each lens subassembly physical location on flexible board, can be based on each lens subassembly above-mentioned and circuit The relative position relation of the regional of the electric signal interface on plate determines.Concrete, can be according to circuit board On projected position on flexible board of the regional of electric signal interface, determine that each lens subassembly is soft Position on property plate.
If optical module includes multiple first kind lens subassembly, the most multiple first kind lens subassemblies are on flexible board Position, is distributed in the both sides of primary importance region projected position on flexible board nearby；If optical module includes Multiple Equations of The Second Kind lens subassemblies, the most multiple Equations of The Second Kind lens subassemblies position on flexible board, it is distributed in nearby The both sides of second position region and the 3rd band of position projected position on flexible board, if optical module includes many Individual 3rd class lens subassembly, the most multiple 3rd class lens subassemblies position on flexible board, it is distributed in nearby The both sides of four bands of position projected position on flexible board.
Primary importance region, second position region, the 3rd band of position, the 4th band of position are on flexible board Projected position, see the dashed region of Fig. 3 b.In Fig. 3 b, first kind lens subassembly A1 and A2 sets The both sides of the projected position put in primary importance region on flexible board, Equations of The Second Kind lens subassembly B1 and B2 It is arranged on, the both sides of second position region and the 3rd band of position projected position on flexible board, wherein, Driving chip 1 is corresponding with second position region with driving chip 7, and driving chip 1 and driving chip 7 are distributed In the both sides of second position region projected position on flexible board, driving chip 2 and driving chip 8 and Three bands of position are corresponding, and driving chip 2 and driving chip 8 are distributed in the 3rd band of position on flexible board The both sides of projected position.3rd class lens subassembly C1 and C2 is arranged on the 4th band of position on flexible board The both sides of projected position.
Finally, based on lens subassembly position on flexible board, the driving chip in lens subassembly and finger are determined The corresponding relation of location area.
Corresponding relation for the driving chip in the arbitrary lens subassembly on flexible board Yu specified location area For:
If a lens subassembly is first kind lens subassembly, the driving chip in lens subassembly, with primary importance In region, the transmitting electric signal interface near this lens subassembly side connects；
If a lens subassembly is Equations of The Second Kind lens subassembly, for driving light emission component in this lens subassembly Driving chip, the transmitting electric signal interface of lens subassembly side close with in second position region connects；This is saturating For driving the driving chip of light-receiving assembly in mirror assembly, the close lens subassembly one with in the 3rd band of position The reception electric signal interface connection of side；
If a lens subassembly is the 3rd class lens subassembly, the driving chip in this lens subassembly, with the 4th The reception electric signal interface connection of close lens subassembly side in putting region.
Such as, as best shown in figures 3 a and 3b, in driving chip 3 and driving chip 4, with primary importance region Transmitting electric signal interface connection near lens subassembly A1 side；Driving chip 9 and driving chip 10 and In one band of position, the transmitting electric signal interface near lens subassembly A2 side connects.Driving chip 1 and In two bands of position, the transmitting electric signal interface near lens subassembly B1 side connects；Driving chip 2 and In three bands of position, the reception electric signal interface near lens subassembly B1 side connects；Driving chip 7 and Transmitting electric signal interface connection near lens subassembly B2 side in two bands of position, driving chip 8 and the In three bands of position, the reception electric signal interface near lens subassembly B2 side connects.Driving chip 5 and driving Dynamic chip 6, the reception electric signal interface of lens subassembly C1 side close with in the 4th band of position connects； Reception electricity near lens subassembly C2 side in driving chip 11 and driving chip 12 and the 4th band of position Signaling interface connects.
Based on the driving chip in lens subassembly and lens subassembly and electric signal interface region above-mentioned relative Position relationship, the structure of the optical module of the embodiment of the present invention can include following several:
In the first structure, whole lens subassemblies of optical module are all distributed on a flexible board, lens subassembly Fig. 3 b similar with the relative position relation in electric signal interface region.In such an embodiment, optical module includes first Fiber adapter and the second fiber adapter, the quantity of the lens subassembly corresponding with the first fiber adapter, etc. Quantity in the lens subassembly corresponding with the second fiber adapter；Wherein, corresponding with the first fiber adapter Lens subassembly, is distributed in the side of each electric signal interface view field on flexible board；With the second optical fiber The lens subassembly that adapter is corresponding, is distributed in another of each electric signal interface view field on flexible board Side.According to the structure shown in Fig. 3 b, lens subassembly A1, lens subassembly B1, lens subassembly C1 are all with One fiber adapter is corresponding, lens subassembly A2, lens subassembly B2, lens subassembly C2 all with the second optical fiber Adapter is corresponding.Driving chip 1,3,4 is used for driving light emission component, driving chip 2,5,6 to be used for Driving light-receiving assembly, driving chip 7,9,10 is used for driving light emission component, driving chip 8,11, 12 are used for driving light-receiving assembly, if the electric signal interface quantity that each driving chip accesses is identical, then access The transmission channel of the first fiber adapter, reception number of channels, lead to the transmitting accessing the second fiber adapter Road, reception number of channels are equal.
In the second structure, whole lens subassemblies of optical module are all distributed on 2 flexible boards, including first Flexible board and the second flexible board, the relative position in the lens subassembly on two flexible boards and electric signal interface region Relation, as shown in Figure 4.In such an embodiment, the first flexible board and the second flexible board are connected to circuit Plate both sides；Optical module also includes the first fiber adapter and the second fiber adapter, saturating on the first flexible board Mirror assembly is corresponding with the first fiber adapter, the lens subassembly on the second flexible board and the second fiber adapter pair Should；Wherein, the quantity of the lens subassembly on the first flexible board, equal to the lens subassembly on the second flexible board Quantity.
In optical module structure as shown in Figure 4, lens subassembly A1 and lens subassembly A2 is first kind lens Assembly, lens subassembly B1 and lens subassembly B2 are Equations of The Second Kind lens subassembly, lens subassembly C1 and battery of lens Part C2 is the 3rd class lens subassembly.Lens subassembly with the relative position relation in electric signal interface region is: thoroughly Mirror assembly A1 and lens subassembly A2 is arranged on the both sides in primary importance region, lens subassembly B1 and battery of lens Part B2 is positioned at second position region and the both sides of the 3rd band of position, lens subassembly C1 and lens subassembly C2 It is positioned at the both sides of the 4th band of position.
In optical module structure as shown in Figure 4, the lens subassembly A1 being positioned on the first flexible board, battery of lens Part B1, lens subassembly C1 are all corresponding with the first fiber adapter, are positioned at the lens subassembly on the second flexible board A2, lens subassembly B2, lens subassembly C2 are all corresponding with the second fiber adapter.Driving chip 1,2,3 For driving light emission component, driving chip 4,5,6 is used for driving light-receiving assembly, driving chip 7,8, 9 are used for driving light emission component, driving chip 10,11,12 to be used for driving light-receiving assembly, drive if each The electric signal interface quantity that dynamic chip accesses is identical, then access the transmission channel of the first fiber adapter, reception Number of channels, with the transmission channel accessing the second fiber adapter, receive number of channels equal.
In optical module structure as shown in Figure 4, the driving chip in lens subassembly and electric signal interface region Corresponding relation is: near lens subassembly A1 in driving chip 1 and driving chip 2, with primary importance region The transmitting electric signal interface connection of side；Driving chip 7 and driving chip 8 are close with in primary importance region The transmitting electric signal interface connection of lens subassembly A2 side.Driving chip 3 is close with in second position region The transmitting electric signal interface connection of lens subassembly B1 side；Driving chip 4 is close with in the 3rd band of position The reception electric signal interface connection of lens subassembly B1 side；Driving chip 9 is close with in second position region The transmitting electric signal interface connection of lens subassembly B2 side, driving chip 10 is close with in the 3rd band of position The reception electric signal interface connection of lens subassembly B2 side.Driving chip 5 and driving chip 6, with the 4th In the band of position, the reception electric signal interface near lens subassembly C1 side connects；Driving chip 11 and driving The reception electric signal interface of chip 12 lens subassembly C2 side close with in the 4th band of position connects.
Circuit board is all stacked in for the structure of above-mentioned the second optical module, the first flexible board and the second flexible board On, the arrangement on circuit boards of the lens subassembly on the first flexible board, the lens subassembly on the second flexible board is closed System, including: the lens subassembly on the first flexible board and the second flexible board is all arranged in the front of circuit board.
The third optical module structure, as it is shown in figure 5, flexible board 1 and flexible board 2 are connected to circuit board Both sides, lens subassembly A1 and lens subassembly A2 are first kind lens subassembly, lens subassembly B1 and battery of lens Part B2 is Equations of The Second Kind lens subassembly, and lens subassembly C1 and lens subassembly C2 is the 3rd class lens subassembly.Position Lens subassembly A1 on the first flexible board, lens subassembly B1, lens subassembly C1 all fit with the first optical fiber Orchestration is corresponding, and the lens subassembly A2 being positioned on the second flexible board, lens subassembly B2, lens subassembly C2 is equal Corresponding with the second fiber adapter.
Wherein, in optical module structure as shown in Figure 5, on lens subassembly on flexible board 1 and flexible board 2 Lens subassembly, and the corresponding relation of circuit board power on signal interface area, and the driving in lens subassembly Chip and the corresponding relation in electric signal interface region are all identical with the optical module structure shown in Fig. 4, the most not Tire out again and state.
The third optical module structure compared with the second optical module structure, lens subassembly B1 and lens subassembly B2 Position different.Flexible board 1, flexible board 2 are stacked as two-sided stacked with circuit board, the arrow in Fig. 5 The overbending direction of flexible board when direction is stacked, i.e. when flexible board 1 is stacked with circuit board, lens subassembly A1, lens subassembly C1 are stacked in the front of circuit board, and lens subassembly B1 is stacked in the back side of circuit board； When flexible board 2 is stacked with circuit board, lens subassembly A2, lens subassembly C2 are stacked in the front of circuit board, Lens subassembly B2 is stacked in the back side of circuit board.
In order to make the spatial arrangement driving chip having abundance on flexible board, for the knot of the third optical module above-mentioned Structure, the first flexible board and the second flexible board are all stacked on circuit boards, lens subassembly on the first flexible board, Lens subassembly on second flexible board arrangement relation on circuit boards, including:
In lens subassembly on first flexible board and the second flexible board, first kind lens subassembly and the 3rd class lens Assembly is arranged in circuit board front, and Equations of The Second Kind lens subassembly is arranged in back of circuit board；Or, first is flexible In lens subassembly on plate and the second flexible board, first kind lens subassembly and the 3rd class lens subassembly are arranged in electricity Road back, Equations of The Second Kind lens subassembly is arranged in circuit board front.First flexible board and the second flexible board are stacked Structure before circuit board, can be found in Figure 17；After first flexible board and the second flexible board are stacked and placed on circuit board Structure can be found in Figure 18.
The above-mentioned optical module cabling scheme of the embodiment of the present invention, on circuit board, each electric signal interface (launches electricity Signaling interface and reception electric signal interface) can be replaced other kinds of optical module electric signal connector, including But do not limit golden finger, BGA/LGA adapter, Interposer adapter etc..
The above-mentioned optical module cabling scheme of the embodiment of the present invention, it is adaptable to the optical module/AOC of band tail optical fiber, also The scene that applicable module internal optical fiber can intersect.
The above-mentioned optical module cabling scheme of the embodiment of the present invention, is particularly well-suited to the golden finger/adapter of optical module Scene with one-to-many occurs in the driving chip within optical module, i.e. realizes multichannel by multiple driving chip Optical module, optical module passes through golden finger, BGA/LGA adapter, Interposer adapter etc., and drives Dynamic chip carries out the connection of high-speed differential signal line, goes out at golden finger/adapter and optical module internal drive chip When showing the ratio of more than 1:2, such as one optical module has a BGA adapter, and inside has 12 to drive Dynamic chip, the internal structure of such optical module all may result in the high-speed differential signal cabling on PCB Difficulty rises, cost increase, even cannot connect up, signal quality is unsatisfactory for requirement.Implemented by the present invention The above-mentioned optical module cabling scheme of example, can effectively reduce PCB trace difficulty in multichannel light module, fall Low cost.
The above-mentioned optical module cabling scheme of the embodiment of the present invention, it is adaptable to a fairly large number of optical mode of module channels Block, such as 12 passages, 24 passages, 48 passages or more multichannel optical module.
Intersecting to meet optical fiber, the above-mentioned optical module cabling scheme of the embodiment of the present invention, in needing optical module Optical fiber with intersect space.
The above-mentioned optical module cabling scheme of the embodiment of the present invention, by intersect optical fiber, it is ensured that PCB trace without Intersect or few intersection, reduce number of vias, and then the quality of raising optical module circuit board power on signal, make light Module meets the demand on signal quality of 25Gbps or higher rate.The above-mentioned optical module of the embodiment of the present invention is walked Line scheme, especially has preferably effect of optimization to the optical module of 25Gbps or higher signal rate signal.
The embodiment of the present invention combines the optical module of a kind of 48 passages, the circuit board to the embodiment of the present invention below Cabling mode illustrates.
Such as to design 48 passage complexity photo engines of a customization, outside the optical module of 48 passages Shape size, transmitting electric signal interface and the arrangement of reception electric signal interface and the passage of fiber adapter side Access order, client the optical module profile customized in advance, optical module electric connector signal (the i.e. signal of telecommunication The arrangement of interface requires), optical module light mouth specification (the passage access order of fiber adapter side) of being correlated with comes Determine.
Fig. 7 a is that the optical module of 48 passages makes a reservation for access order at fiber adapter wing passage, and MPO-1 is the Passage access order at the light mouth of one fiber adapter, the passage at the light mouth of the first fiber adapter includes 12 transmission channels and 12 reception passages；Wherein, the predetermined access order of 12 transmission channels is TX01～TX12；12 predetermined access orders receiving passage are RX01 to RX12.MPO-2 is second Passage access order at the light mouth of fiber adapter, the passage at the light mouth of the second fiber adapter also includes 12 transmission channels and 12 reception passages；Wherein, the predetermined access order of 12 transmission channels is TX13～TX24；12 predetermined access orders receiving passage are RX13 to RX24.
Fig. 7 b is the pins of 24 transmitting signals of telecommunication that 24 transmission channels of the optical module of 48 passages are corresponding Definition, receives the pin definition of 24 reception signals of telecommunication corresponding to passage, launches the signal of telecommunication for 24 with 24 Pin definition and 24 receive the signals of telecommunication pins definition, for definition 24 launch electric signal interfaces, 24 receive electric signal interface arrangement position on circuit boards.From Fig. 7 b, launch electric signal interface Different with receiving electric signal interface layout area on circuit boards.
Inventive concept based on the embodiment of the present invention, the lens subassembly within optical module, the core in lens subassembly The arrangement of the assemblies such as sheet and cabling, including herein below:
One, the optical module of 48 passages includes a circuit board, and 48 electric signal interfaces on circuit board are pressed Define according to the pin shown in Fig. 7 b and arrange, launch the region at electric signal interface place and receive the signal of telecommunication The region at interface place specifically can be found in Fig. 9.
Its two, the optical module of 48 passages includes 6 lens subassemblies, as shown in Figure 8, the respectively first lens Assembly the 100, second lens subassembly the 200, the 3rd lens subassembly the 300, the 4th lens subassembly the 400, the 5th is saturating Mirror assembly 500 and the 6th lens subassembly 600, wherein, first lens subassembly the 100, second lens subassembly 200, 3rd lens subassembly 300 is arranged on the first flexible board, the 4th lens subassembly the 400, the 5th lens subassembly 500 It is arranged on the second flexible board with the 6th lens subassembly 600.
Wherein, lens subassembly with the relative position relation in electric signal interface region is:
Define according to the signal of telecommunication pin shown in Fig. 7 b, launch electric signal interface region for 24 and include first Putting region and second position region, 24 receive electric signal interface region and include the 3rd band of position and the 4th Put region.First lens subassembly 100 and the 4th lens subassembly 400 are first kind lens subassembly, and first is saturating Mirror assembly 100 and the 4th lens subassembly 400 are symmetrical about the primary importance region launching electric signal interface TX Arrange；Second lens subassembly 200 and the 5th lens subassembly 500 are Equations of The Second Kind lens subassembly, and about TX Second position region with receive electric signal interface RX the 3rd band of position be symmetrical arranged；3rd battery of lens Part 300 and the 6th lens subassembly 600 are the 3rd class lens subassembly, and symmetrical about RX the 4th band of position Arrange.
The optical module of 48 passages includes the first fiber adapter and the second fiber adapter, on the first flexible board Lens subassembly is corresponding with the first fiber adapter；Lens subassembly on second flexible board and the second fiber adapter Corresponding.
Light mouth order in conjunction with 12 transmission channels of the first fiber adapter side is TX01～TX12 and 12 The predetermined access order of individual reception passage is RX01 to RX12；12 transmittings of the second fiber adapter side The light mouth order of passage for TX13～TX24 and 12 receive the predetermined access order of passages be RX13 extremely RX24, the electric signal interface that driving chip lens subassembly in corresponding with the first fiber adapter is corresponding Channel number is within the scope of TX01～TX12 and RX01 to RX12, corresponding with the second fiber adapter The channel number of the electric signal interface that driving chip in lens subassembly is corresponding is at TX13～TX24 and RX13 extremely Within the scope of RX24.
For simplicity, Difference signal pair (TX01_P, TX01_N) is reduced to launch the signal of telecommunication connect Mouth TX01, the Difference signal pair of other electric signal interfaces simplifies the most in this manner.
Therefore, the driving chip in lens subassembly with the corresponding relation in electric signal interface region is:
Primary importance region includes that 16 are launched electric signal interface, the driving chip 1 of the first lens subassembly 100 With driving chip 2,8 transmitting electric signal interfaces of first flexible board close with in primary importance region connect；
Such as, driving chip 1 connects with launching electric signal interface TX09, TX12, TX8, TX10, Driving chip 2 connects with launching electric signal interface TX07, TX03, TX02, TX05.4th battery of lens Near the 8 of the second flexible board in driving chip 7 in part 400 and driving chip 8, with primary importance region Individual transmitting electric signal interface connects；Driving chip 7 with launch electric signal interface TX17, TX15, TX13, TX18 connects, and driving chip 8 connects with launching electric signal interface TX20, TX16, TX22, TX23.
Second position region includes that 8 are launched electric signal interface, and the 3rd band of position includes that 8 receive telecommunications Number interface, near first in a driving chip 3 in the second lens subassembly 200, with second position region 4 transmitting electric signal interface connections of flexible board, a driving chip 9 in the 5th lens subassembly 500, 4 transmitting electric signal interfaces of second flexible board close with in second position region connect；Second lens subassembly Near 4 reception electricity of the first flexible board in another driving chip 4, with the 3rd band of position in 200 Signaling interface connects；Another driving chip 10 of 5th lens subassembly 500, leans in the 3rd band of position 4 reception electric signal interface connections of nearly second flexible board；
Such as, driving chip 3 connects with launching electric signal interface TX04, TX11, TX06, TX01, Driving chip 9 connects with launching electric signal interface TX24, TX14, TX19, TX21, driving chip 4 Connect with receiving electric signal interface RX04, RX01, RX03, RX02, driving chip 10 and reception electricity Signaling interface RX22, RX24, RX23, RX21 connect.
4th band of position includes that 16 receive electric signal interface, then two in the 3rd lens subassembly 300 Near 8 reception telecommunications of the first flexible board in driving chip 5 and driving chip 6, with the 4th band of position Number orifice；Driving chip 11 in 6th lens subassembly 600 and driving chip 12, with the 4th position Near 8 reception electric signal interface connections of the second flexible board in region.
Such as, driving chip 5 connects with receiving electric signal interface RX11, RX12, RX09, RX07, Driving chip 6 connects with receiving electric signal interface RX10, RX08, RX06, RX05, driving chip 11 Connect with receiving electric signal interface RX20, RX15, RX19, RX17, driving chip 12 and reception electricity Signaling interface RX16, RX18, RX13, RX14 connect.
The circuit board trace schematic diagram that above-mentioned connected relation presents is with reference to Fig. 9, according to Fig. 9 it can be seen that connect Cabling (illustrating that differential signal line in Fig. 9) between power on signal interface and each chip is arranged smooth and easy, Without intersecting, and cabling is shorter.Cabling distribution on circuit board and flexible board is at most distributed in two of circuit board On face.
Lens subassembly on first flexible board and the annexation of the first fiber adapter, see Figure 10, specifically For:
First bridle wire apparatus Jumper B is set in the first lens subassembly 100, sets in the second lens subassembly 200 Put the second bridle wire apparatus Jumper A, the 3rd bridle wire apparatus Jumper C is set in the 3rd lens subassembly 300； The first bridle wire apparatus Jumper B on first flexible board, the second bridle wire apparatus Jumper A and the 3rd wire jumper Device Jumper C all accesses the first fiber adapter 700 by two fibre ribbons.Wherein, it is respectively connected to One bridle wire apparatus Jumper B, the second bridle wire apparatus Jumper A and the 3rd bridle wire apparatus Jumper C side The passage of fibre ribbon accesses the first fiber adapter 700 side after intersecting so that be respectively connected to the first wire jumper dress Put the fibre ribbon of Jumper B, the second bridle wire apparatus Jumper A and the 3rd bridle wire apparatus Jumper C side Channel sequence, different from the channel sequence of the fibre ribbon accessing the first fiber adapter 700 side.
Lens subassembly on second flexible board and the annexation of the second fiber adapter, see Figure 11, specifically For:
The forth jump line apparatus Jumper B is set in the 4th lens subassembly 400, sets in the 5th lens subassembly 500 Put the fifth jump line apparatus Jumper A, the 6th bridle wire apparatus Jumper C is set in the 6th lens subassembly 600； The forth jump line apparatus Jumper B, the fifth jump line apparatus Jumper A and the 6th wire jumper on second flexible board Device Jumper C all accesses the second fiber adapter 800 by two fibre ribbons.Wherein, it is respectively connected to Four bridle wire apparatus Jumper B, the fifth jump line apparatus Jumper A and the 6th bridle wire apparatus Jumper C side The passage of fibre ribbon accesses the second fiber adapter 800 side after intersecting so that be respectively connected to the forth jump traditional thread binding Put the fibre ribbon of Jumper B, the fifth jump line apparatus Jumper A and the 6th bridle wire apparatus Jumper C side Channel sequence, different from the channel sequence of the fibre ribbon accessing the second fiber adapter 800 side.
First bridle wire apparatus Jumper B, the second bridle wire apparatus Jumper A and the 3rd bridle wire apparatus Jumper C Access the schematic diagram of the first fiber adapter, as shown in figure 12.
Because the electric signal interface in specified location area is accessed corresponding driving chip by the embodiment of the present invention, because of This, the channel number of the electric signal interface accessing each driving chip is out of order, therefore, corresponding bridle wire apparatus The channel sequence of the fibre ribbon of side is also out of order.First lens subassembly the 100, second lens subassembly 200, The channel sequence of the fibre ribbon of the bridle wire apparatus side of the 3rd lens subassembly 300 correspondence sees Figure 13, the 4th lens The fibre ribbon of the bridle wire apparatus side of assembly the 400, the 5th lens subassembly 500 and the 6th lens subassembly 600 correspondence Channel sequence see Figure 14, wherein, the optical fiber that different channel number shown in Figure 13 and Figure 14 is corresponding Color is different.
The most corresponding with first lens subassembly the 100, second lens subassembly the 200, the 3rd lens subassembly 300 First bridle wire apparatus Jumper B, the second bridle wire apparatus Jumper A and the 3rd bridle wire apparatus Jumper C The channel sequence of fibre ribbon is with reference to Figure 13.
Because accessing the electric signal interface of the driving chip 1 in the first lens subassembly 100 be: TX09, TX12, TX8、TX10；The electric signal interface accessing the driving chip 2 in the first lens subassembly 100 is: TX07, TX03、TX02、TX05；The electric signal interface accessing the driving chip 3 in the second lens subassembly 200 is: TX04、TX11、TX06、TX01；Access the signal of telecommunication of driving chip 4 in the second lens subassembly 200 Interface is: RX04, RX01, RX03, RX02；Access the driving chip 5 in the 3rd lens subassembly 300 Electric signal interface be: RX11, RX12, RX09, RX07；Access in the 3rd lens subassembly 300 The electric signal interface of driving chip 6 is: RX10, RX08, RX06, RX05.So, such as Figure 13 institute Show:
The channel sequence of two fibre ribbons accessing the first bridle wire apparatus Jumper B side is respectively TX09-TX12-TX8-TX10；TX07-TX03-TX02-TX05；
The channel sequence of two fibre ribbons accessing the second bridle wire apparatus Jumper A side is respectively as follows: TX04-TX11-TX06-TX01, RX04-RX01-RX03-RX02；
The channel sequence of the two articles of fibre ribbons accessing the 3rd bridle wire apparatus Jumper C side is respectively as follows: RX11-RX12-RX09-RX07；RX10-RX08-RX06-RX05.
As shown in Figure 15 and Figure 16, the first bridle wire apparatus Jumper B, the second bridle wire apparatus it are respectively connected to The optical fiber of the fibre ribbon of Jumper A and the 3rd bridle wire apparatus Jumper C side accesses the first optical fiber after intersecting Adapter 700 side so that access the transmission channel access order of the fibre ribbon of the first fiber adapter 700 side It is respectively as follows: with the reception passage access order of the fibre ribbon accessing the first fiber adapter 700 side
TX01-TX02-TX03-TX04-TX05-TX06-TX07-TX08-TX09-TX10-TX11-TX12；With RX01-RX02-TX03-RX04-RX05-RX06-RX07-RX08-RX09-RX10-RX11-RX12。
The most corresponding with the 4th lens subassembly the 400, the 5th lens subassembly 500 and the 6th lens subassembly 600 The forth jump line apparatus Jumper B, the fifth jump line apparatus Jumper A and the 6th bridle wire apparatus Jumper C side The channel sequence of fibre ribbon with reference to Figure 14.
Because accessing the electric signal interface of the driving chip 7 in the 4th lens subassembly 400 be: TX17, TX15, TX13、TX18；The electric signal interface accessing the driving chip 8 in the 4th lens subassembly 400 is: TX20, TX16、TX22、TX23；The electric signal interface accessing the driving chip 9 in the 5th lens subassembly 500 is: TX24、TX14、TX19、TX21；Access the telecommunications of driving chip 10 in the 5th lens subassembly 500 Number interface is: RX22, RX24, RX23, RX21；Access the driving core in the 6th lens subassembly 600 The electric signal interface of sheet 11 is: RX20, RX15, RX19, RX17；Access the 6th lens subassembly 600 The electric signal interface of interior driving chip 12 is: RX16, RX18, RX13, RX14, so, such as figure Shown in 14:
The channel sequence of two fibre ribbons accessing the forth jump line apparatus Jumper B side is respectively TX17-TX15-TX13-TX18, TX20-TX16-TX22-TX23；
The channel sequence of two fibre ribbons accessing the fifth jump line apparatus Jumper A side is respectively as follows: TX24-TX14-TX19-TX21, RX22-RX24-RX23-RX21；
The channel sequence of the two articles of fibre ribbons accessing the 6th bridle wire apparatus Jumper C side is respectively as follows: RX20-RX15-RX19-RX17, RX16-RX18-RX13-RX14.
It is respectively connected to the forth jump line apparatus Jumper B, the fifth jump line apparatus Jumper A and the 6th wire jumper dress After the optical fiber of the fibre ribbon putting Jumper C side accesses the second fiber adapter 800 side after intersecting, connect Enter the transmission channel access order of the fibre ribbon of the second fiber adapter 800 side and receive the access order of passage It is respectively as follows:
TX13-TX14-TX15-TX16-TX17-TX18-TX19-TX20-TX21-TX22-TX23-TX24；
RX13-RX14-RX15-RX16-RX17-RX18-RX19-RX20-RX21-RX22-RX23-RX24。
Two flexible boards of the optical module of above-mentioned 48 passages of the embodiment of the present invention and the annexation of circuit board, And the distribution of the lens subassembly on two flexible boards sees Figure 17, two flexibilities of the optical module of 48 passages Plate sees Figure 18 with circuit board structural representation after stacked, wherein, and a battery of lens on the first flexible board Part (the specially second lens subassembly 200) is stacked in the front of circuit board, and on the second flexible board is saturating Mirror assembly (the specially the 5th lens subassembly 500) is stacked in the front of circuit board, another on the first flexible board Outer two lens subassemblies (specially first lens subassembly 100 and the 3rd lens subassembly 300) are stacked in circuit The back side of plate, two other lens subassembly (the specially the 4th lens subassembly 400 and on the second flexible board Six lens subassemblies 600) it is stacked in the back side of circuit board, the most stacked, the beneficially volume of optical module is small-sized Change.
The installation diagram of the optical module of above-mentioned 48 passages of the embodiment of the present invention sees Figure 19 and Figure 20, wherein, In 19, optical module assembles with fin, and Figure 20 illustrates fin, optical module upper casing, 48 passages The Rigid Flex of optical module, optical lens module, optical module lower casing and optical fiber on optical module suitable Relative position relation between orchestration (tail optical fiber).
In the optical module of above-mentioned 48 passages of the embodiment of the present invention, the combination of flexible board and circuit board can To use Rigid Flex, or soft board combines metal reinforcement plate etc., can meet the radiating requirements of optical module, May also be advantageous for designing volume less, the higher optical module of density.
In the optical module of above-mentioned 48 passages of the embodiment of the present invention, the intersection optical fiber order when fibre ribbon makes, Make the cabling in PCB can be the most smooth and easy, only on top layer TOP and two top layers of bottom Bottom with regard to complete cloth Line, can accomplish cabling short, without via few Via Design, alleviate complicated PCB design difficulty greatly, Reduce PCB cost, it is often more important that improve the transmission performance of the signal of telecommunication, use soft or hard to combine simultaneously The heat radiation of plate design maximized optimization driving chip.
In the optical module that the embodiment of the present invention provides, position specified by the driving chip of lens subassembly and circuit board The electric signal interface connection in region, the bridle wire apparatus of lens subassembly is connected by fibre ribbon with fiber adapter, In order to make the nothing of the electric signal interface communicating passage with driving chip intersect or intersect, in the embodiment of the present invention less The electric signal interface accessing driving chip is the electric signal interface of specified location area, and specified location area Electric signal interface is the class of each electric signal interface on the optical assembly type according to driving chip driving, circuit board Type and arrangement determine.And the electric signal interface accessing driving chip in prior art is according to fiber adapter The predetermined intelligent acess order in side determines.Owing to the electric signal interface of specified location area is linked into driving core The channel sequence that the order of sheet accesses bridle wire apparatus side with fibre ribbon is consistent, and fibre ribbon incoming fiber optic adapter The channel sequence of side is typically access set in advance order, and the optical fiber in embodiment of the present invention fibre ribbon is permissible Intersect, out of order after access fiber adapter so that the intelligent acess in fibre ribbon is suitable to fiber adapter side Sequence meets default access order, and therefore, compared with prior art, in the embodiment of the present invention, fibre ribbon accesses and jumps The channel sequence of line apparatus side, different from the channel sequence of fibre ribbon incoming fiber optic adapter side.In optical module What the optical fiber in portion transmitted is optical signal, and optical fiber arbitrarily intersects, and has not both interfered with the transmission of optical signal, also will not Affect the performance of optical module.Therefore, the electric signal interface of specified location area is linked into by the embodiment of the present invention Driving chip, it is ensured that electric signal interface intersects with the nothing of the communicating passage of driving chip or intersects less, solves PCB trace difficult problem present in prior art, can reach PCB trace largest optimization, cabling is smooth and easy, Cabling is short, coiling is few, reduces unnecessary via or without via, and then has ensured the steady of optical module transmission performance Qualitative.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.

Claims (10)

1. an optical module, it is characterised in that including: circuit board, lens subassembly, and with described The fiber adapter that mirror assembly is corresponding；
The driving chip of described lens subassembly is with the electric signal interface of specified location area on described circuit board even Logical, with the friendship of the communicating passage of the electric signal interface Yu described driving chip that reduce described specified location area Fork；Wherein, the electric signal interface of described specified location area, the optical assembly driven according to described driving chip On type, described circuit board, type and the arrangement of each electric signal interface determine；
The bridle wire apparatus of described lens subassembly is connected by fibre ribbon with described fiber adapter, wherein, described Fibre ribbon accesses the channel sequence of described bridle wire apparatus side, accesses described fiber adapter side with described fibre ribbon Channel sequence different.
2. optical module as claimed in claim 1, it is characterised in that described lens subassembly is multiple, institute Stating multiple lens subassembly to be arranged on flexible board, described flexible board is stacked with described circuit board, described flexible board It is connected with described circuit board by electric connector；
Described driving chip position on described flexible board, near the described finger corresponding with described driving chip The electric signal interface of location area view field on described flexible board, with reduce described driving chip with The length of the communicating passage of the electric signal interface of described specified location area.
3. optical module as claimed in claim 2, it is characterised in that the lens subassembly on arbitrary flexible board Including the part in first kind lens subassembly, Equations of The Second Kind lens subassembly and the 3rd class lens subassembly or combination；
Wherein, described first kind lens subassembly only includes the driving chip for driving light emission component；
Described Equations of The Second Kind lens subassembly had both included the driving chip for driving light emission component, include again for Drive the driving chip of light-receiving assembly；
Described 3rd class lens subassembly only includes the driving chip for driving light-receiving assembly.
4. optical module as claimed in claim 3, it is characterised in that
Electric signal interface on described circuit board, including launching electric signal interface and receiving electric signal interface；Institute Stating transmitting electric signal interface distributed areas on described circuit board is emitting area, and the described reception signal of telecommunication connects Mouth distributed areas on described circuit board are receiving area；
Described emitting area includes: near the primary importance region of described receiving area, with away from described reception The second position region in region；
Described receiving area includes: near the 3rd band of position of described emitting area, with away from described transmitting 4th band of position in region；
If described optical module includes multiple described first kind lens subassembly, the most multiple described first kind lens subassemblies Position on described flexible board, is distributed in the projection on described flexible board of the described primary importance region nearby The both sides of position；
If described optical module includes multiple described Equations of The Second Kind lens subassembly, the most multiple described Equations of The Second Kind lens subassemblies Position on described flexible board, is distributed in described second position region and described 3rd band of position nearby and exists The both sides of the projected position on described flexible board,
If described optical module includes multiple described 3rd class lens subassembly, the most multiple described 3rd class lens subassemblies Position on described flexible board, is distributed in the projection on described flexible board of described 4th band of position nearby The both sides of position.
5. optical module as claimed in claim 4, it is characterised in that for arbitrary lens subassembly:
If described lens subassembly is described first kind lens subassembly, the driving chip in described lens subassembly, with In described primary importance region, the transmitting electric signal interface near described lens subassembly side connects；
If described lens subassembly is described Equations of The Second Kind lens subassembly, it is used for driving light emission in described lens subassembly The transmitting signal of telecommunication of close described lens subassembly side in the driving chip of assembly, with described second position region Orifice；For driving the driving chip of light-receiving assembly in described lens subassembly, with described 3rd position In region, the reception electric signal interface near described lens subassembly side connects；
If described lens subassembly is described 3rd class lens subassembly, the driving chip in described lens subassembly, with In described 4th band of position, the reception electric signal interface near described lens subassembly side connects.
6. the optical module as according to any one of claim 3 to 5, it is characterised in that described flexible board Being one, described optical module includes the first fiber adapter and the second fiber adapter, with described first optical fiber The quantity of the lens subassembly that adapter is corresponding, equal to the lens subassembly corresponding with described second fiber adapter Quantity；
Wherein, the lens subassembly corresponding with described first fiber adapter, it is distributed in each signal of telecommunication described and connects The side of mouth view field on described flexible board；The battery of lens corresponding with described second fiber adapter Part, is distributed in the opposite side of described each electric signal interface view field on described flexible board.
7. the optical module as according to any one of claim 3 to 5, it is characterised in that described optical module Including the first fiber adapter and the second fiber adapter；Described flexible board includes the first flexible board and second soft Property plate, described first flexible board and described second flexible board are connected to described circuit board both sides；
Lens subassembly on described first flexible board is corresponding with the first fiber adapter, on described second flexible board Lens subassembly corresponding with the second fiber adapter；
Wherein, the quantity of the lens subassembly on described first flexible board, saturating equal on described second flexible board The quantity of mirror assembly.
8. optical module as claimed in claim 7, it is characterised in that described first flexible board and described the Two flexible boards are all stacked on described circuit board, lens subassembly on described first flexible board, described second soft The lens subassembly on property plate arrangement relation on described circuit board, including:
Lens subassembly on described first flexible board and described second flexible board is all arranged in described circuit board Front；Or,
In lens subassembly on described first flexible board and described second flexible board, described first kind lens subassembly Being arranged in described circuit board front with described 3rd class lens subassembly, described Equations of The Second Kind lens subassembly is arranged in institute State back of circuit board；Or,
In lens subassembly on described first flexible board and described second flexible board, described first kind lens subassembly Being arranged in described back of circuit board with described 3rd class lens subassembly, described Equations of The Second Kind lens subassembly is arranged in institute State circuit board front.
9. optical module as claimed in claim 8, it is characterised in that be provided with on described first flexible board First lens subassembly, the second lens subassembly and the 3rd lens subassembly；It is provided with the 4th on described second flexible board Lens subassembly, the 5th lens subassembly and the 6th lens subassembly, each lens subassembly all includes two driving chip；
Described first lens subassembly and described 4th lens subassembly are described first kind lens subassembly, and about institute State primary importance region to be symmetrical arranged；
Described second lens subassembly and described 5th lens subassembly are described Equations of The Second Kind lens subassembly, and about institute State second position region to be symmetrical arranged with described 3rd band of position；
Described 3rd lens subassembly and described 6th lens subassembly are described 3rd class lens subassembly, and about institute State the 4th band of position to be symmetrical arranged；
If described primary importance region includes that 2N is launched electric signal interface, the most described first lens subassembly Near N number of transmitting signal of telecommunication of described first flexible board in two driving chip, with described primary importance region Orifice；Near institute in two driving chip of described 4th lens subassembly, with described primary importance region State N number of transmitting electric signal interface connection of the second flexible board；
If described second position region includes that N number of transmitting electric signal interface, described 3rd band of position include N Individual reception electric signal interface, a driving chip of the most described second lens subassembly, with described second position district Near N/2 transmitting electric signal interface connection of described first flexible board in territory, described 5th lens subassembly Near N/2 transmitting telecommunications of described second flexible board in one driving chip, with described second position region Number orifice；Lean in another driving chip of described second lens subassembly, with described 3rd band of position N/2 reception electric signal interface connection of the most described first flexible board；Another of described 5th lens subassembly In driving chip, with described 3rd band of position, N/2 the reception signal of telecommunication near described second flexible board connects Mouth connection；
If described 4th band of position includes that 2N receives electric signal interface, the most described 3rd lens subassembly Near N number of reception signal of telecommunication of described first flexible board in two driving chip, with described 4th band of position Orifice；Near institute in two driving chip of described 6th lens subassembly, with described 4th band of position State N number of reception electric signal interface connection of the second flexible board.
10. optical module as claimed in claim 9, it is characterised in that arrange in described first lens subassembly First bridle wire apparatus, arranges the second bridle wire apparatus, in described 3rd lens subassembly in described second lens subassembly 3rd bridle wire apparatus is set；Described first bridle wire apparatus, described second bridle wire apparatus and described 3rd wire jumper dress Put and all access described first fiber adapter by two fibre ribbons；
The forth jump line apparatus is set in described 4th lens subassembly, in described 5th lens subassembly, the fifth jump is set Line apparatus, arranges the 6th bridle wire apparatus in described 6th lens subassembly；Described the forth jump line apparatus, described Five bridle wire apparatus and described 6th bridle wire apparatus all access described second fiber adapter by two articles of fibre ribbons；
It is respectively connected to described first bridle wire apparatus, described second bridle wire apparatus and described 3rd bridle wire apparatus side The passage of fibre ribbon accesses described first fiber adapter side after intersecting；
It is respectively connected to described the forth jump line apparatus, described the fifth jump line apparatus and described 6th bridle wire apparatus side The passage of fibre ribbon, accesses described second fiber adapter side after intersecting.
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