CN102830470B - Pluggable optical transceiver and manufacturing method therefor - Google Patents

Pluggable optical transceiver and manufacturing method therefor Download PDF

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Publication number
CN102830470B
CN102830470B CN201210313551.4A CN201210313551A CN102830470B CN 102830470 B CN102830470 B CN 102830470B CN 201210313551 A CN201210313551 A CN 201210313551A CN 102830470 B CN102830470 B CN 102830470B
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China
Prior art keywords
optical
plug
housing
internal
groove
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CN201210313551.4A
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CN102830470A (en
Inventor
冲和重
小町广一
和田隆寿
石井邦幸
仓岛宏实
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Priority claimed from JP2010083610A external-priority patent/JP5445278B2/en
Priority claimed from JP2010105557A external-priority patent/JP5471787B2/en
Priority claimed from JP2010105560A external-priority patent/JP5471788B2/en
Priority claimed from JP2010114311A external-priority patent/JP5471813B2/en
Priority claimed from JP2010213701A external-priority patent/JP5736703B2/en
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of CN102830470A publication Critical patent/CN102830470A/en
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Abstract

The present invention discloses a pluggable optical transceiver which comprises an optical socket for accommodating an external connector, and a mechanism which prevents the optical transceiver from separating from a main system when the optical socket accommodates the external connector and prevents the optical transceiver from accommodating the external connector when the optical transceiver separates from the main system.

Description

Pluggable optical transceiver and manufacture method thereof
The application be submit on October 29th, 2010, denomination of invention for " pluggable optical transceiver and manufacture method thereof ", application number be that 201080045196.6(international application no is PCT/JP2010/069765) the divisional application of application for a patent for invention.
Technical field
The present invention relates to have the pluggable optical transceiver of at least one function in light transmission and light-receiving, specifically, the present invention relates to following optical transceiver, it can send has respectively multiple light signals of the specific wavelength differing from one another and receives multiple light signals respectively with the specific wavelength differing from one another.
Background technology
US Patent No. P5,943,461B discloses a kind of optical transceiver, and this optical transceiver is provided with the optical conenctor being connected with the optical plug of optical fiber connector mounted externally.Optical fiber draws to be connected with optical module (representing with OSA below) from optical conenctor, described optical module is provided with semiconductor devices, such as for transmitter OSA(TOSA) semiconductor laser diode (LD) or for receiver OSA(ROSA) semiconductor photo diode (PD).
The transmission speed of optical communication increases, and transmission speed has exceeded 10Gbps at present, is generally 40Gbps and 100Gbps.Only rely on the semiconductor devices in OSA to be difficult to arrive so high speed.Generally use the intelligent system of Wave division multiplexing (WDM).For example, four signalling channels of wavelength multiplexing, the speed of each signalling channel is 10Gbps and has the specific wavelength differing from one another, this is equivalent to the transmission speed of 40Gbps, so transmit multiplexed optical signals in simple optical fiber.In the system that is 100Gbps in speed, multiplexed speed is 4 signalling channels of 25Gbps or multiplexed speed and is 10 signalling channels of 10Gbps, to realize the of equal value transmission speed of speed as 100Gbps.CFP-MSA-Draft-rev-1.0 agreement has specified the standard of 100Gbps transmission.
The optical transceiver that meets WDM standard is provided with multiple TOSA and ROSA, optical multiplexer and optical demultiplexer.Another optical unit that the another kind of optical transceiver of WDM communication is provided with optical unit that multiple TOSA and optical multiplexer are integrated and multiple ROSA and optical demultiplexer are integrated, to limit or reduce the quantity of the internal optical fiber being connected with optical element.But this integrated optical device has following shortcoming: as a TOSA only or when only a ROSA breaks down, need to change whole element.Particularly, due to TOSA and the ROSA of operation in being difficult to obtain in this high velocity, or the specification of TOSA and ROSA has limited allowance conventionally, therefore can often run into the situation of changing deteriorated OSA.
For the optical transceiver that TOSA and ROSA are installed separately, the internal optical fiber being connected with each element disperses.In addition, optical fiber has following inherent characteristic, and when fibre-optical bending, loss increases.The minimum bending radius of conventional fiber is defined as 15mm.Even improved optical fiber, its minimum bending radius is also defined as 5mm.Thereby internal optical fiber must prepare unnecessary length, this means that, in the situation that internal optical fiber not being connected up, long optical fiber can be arranged in optical transceiver disorderly.
Summary of the invention
An aspect of of the present present invention relates to the optical communication apparatus for WDM communication system.This device comprises multiple optical elements, electrical equipment, many internal optical fibers and housing.Optical element comprises optical plug, multiple OSA and optical unit.OSA can be TOSA or ROSA,
And optical unit can be optical multiplexer or optical demultiplexer according to the type of OSA.Optical multiplexer can the multiplexing multiple light signals that send and have respectively the specific wavelength differing from one another from each TOSA.The light signal that optical demultiplexer can provide outside resolves into multiple light signals respectively with the specific wavelength differing from one another, and the light signal after decomposing is sent to corresponding ROSA.Electrical equipment comprise be arranged on circuit board and with TOSA and
The circuit of ROSA electrical connection.Internal optical fiber can be connected optical plug with optical multiplexer and optical demultiplexer optics, and optical multiplexer is connected with TOSA and optical demultiplexer is connected with ROSA.In housing, optical element, electrical equipment and internal optical fiber can be installed.
Be characterised in that according to one of communicator of the present invention, housing is divided into two parts, and a part is only for optical element is installed, and another part is only for mounting electrical element, and internal optical fiber can be connected with optical element with form that can be slotting.
Because housing is divided into two parts significantly, therefore internal optical fiber can extend to the below of the circuit board in the below of an optical element in part and another part.Optical element can also comprise many internal optical fibers, front tray and lock unit.Each internal connector is arranged on the end of internal optical fiber or is associated with the end of internal optical fiber, and is connected with OSA with form that can be slotting.Front tray can support internal connector and be furnished with internal optical fiber.Lock unit can support OSA and can be connected with internal connector two kinds of positions.
Front tray can be provided with multiple slits.Each slit can be received an internal optical fiber, and is provided with a pair of lock pawl engaging with internal optical fiber.Slit can also be provided with the eaves portion that the internal optical fiber that prevents in slit departs from and the guiding piece that is positioned at the sidepiece place of slit, so that the internal optical fiber extending along the sidepiece of front tray is from longitudinally turning to laterally.
Communicator of the present invention can also be provided with the rear pallet of the circuit board below of another part that is arranged in housing.Rear pallet this part that also internal optical fiber pulling out from a part can be led again.Rear pallet can also be provided with multiple eaves portion, and multiple eaves portion prevents that the internal optical fiber that is placed in rear pallet from departing from.
A part of the housing of this communicator can be provided with multiple the portions for optical element is installed, wherein platform portion can be formed with the multiple grooves for placing internal optical fiber, and another part of housing can also be provided with periphery and can limit multiple portions of the bending curvature of internal optical fiber.Platform portion in another part can contact with the circuit being arranged on circuit board, to guarantee the heat dissipation path from circuit to housing.
In the platform portion of a part, can be provided with two pairs of grooves, distance between first pair of groove and to be placed in distance between two optical fiber of SC type optical plug roughly equal, and another distance between second pair of groove and to be placed in distance between two optical fiber of LC type optical plug roughly equal.Therefore, in the time that the optical plug of this optical communication apparatus is SC type, the internal optical fiber pulling out from optical plug can be placed in first pair of groove, and in the time that LC type optical plug is installed, can make second pair of groove receive the internal optical fiber pulling out from optical plug.
The housing of this optical communication apparatus can be provided with the region for optical plug is installed.Rear wall and sidewall can be separated this region and a part.Between the rear portion of optical plug and rear wall, be equipped with conducting strip, optical plug can be arranged on to this region, thereby can effectively protect a part and another part not to be subject to external action.
Another aspect of the present invention relates to the method for assembling optical communication apparatus.This optical communication apparatus comprises optical element, electrical equipment, many internal optical fibers and housing.Optical element comprises optical plug, optical unit and multiple OSA, and electrical equipment comprises the electronic circuit being arranged on circuit board.Internal optical fiber is connected an OSA in OSA respectively with optical unit, and housing is only provided with these optical elements in a part, and electrical equipment is only installed in another part that is different from this part, and internal optical fiber is installed.Method of the present invention is further comprising the steps of: (a) optical unit is arranged on described housing; (b) arrange the internal optical fiber extending from optical unit; (c) circuit board fitting together with OSA is arranged on housing, with covering internal optical fiber; And (d) OSA is connected with internal optical fiber optics.
One of this method is characterised in that, can internal optical fiber is arranged in housing and by OSA, be arranged on housing in after, internal optical fiber is connected with OSA optics.The step of arranging internal optical fiber can comprise the following steps: (b-1) internal optical fiber is placed in to the groove of a part that is formed on housing, this part is only for installing optical element; And (b-2) make internal optical fiber along the periphery bending that is formed on the platform portion in another part of housing, wherein, this another part is only for mounting electrical element.In addition, the step of mounting circuit boards can also comprise: (c-1) cover and be placed in groove and the internal optical fiber along periphery bending with circuit board.
In modified example, arrange that the step of internal optical fiber can comprise the following steps: (b-1) ' rear pallet is placed in to another part of housing; The curvature bending that and (b-2) ' internal optical fiber is limited according to rear pallet; And the step of mounting circuit boards can comprise the following steps: circuit board is arranged on rear pallet, to cover the internal optical fiber being placed on rear pallet.
In the method for the invention, the step of arranging internal optical fiber can comprise the following steps: (b-1) with front tray and lock unit covering internal optical fiber, internal optical fiber is arranged in a part of housing, (b-2) optical fiber in guiding internal optical fiber in one of slit on front tray; And the step of mounting circuit boards can comprise the following steps: (c-1) internal connector being attached on the end of internal optical fiber is connected with front tray, (c-2) internal connector is placed on to retracted position, (c-3) lock unit is arranged in a part of housing, and (c-4) OSA being fitted together with circuit board group is in advance arranged on lock unit; And the step that OSA is connected with internal optical fiber can comprise the step that internal connector is placed on to link position.
Another aspect of the present invention relates to a kind of optical transceiver, and this optical transceiver comprises OSA; One end is provided with the internal optical fiber of lock pin, elastomeric element and flange; The pallet of guiding internal optical fiber; And internal connector.The internal connector of this optical transceiver is received one end of internal optical fiber, and fits together elastomeric element to be remained on to internal connector inside with stop part, and internal connector engages with OSA by tray support and by lock unit movably.This optical transceiver is characterised in that, internal connector can move between retracted position and link position.At link position, lock pin can be connected with OSA optics, and in retracted position, internal connector is not interfered the installation of the lock unit together with being pre-assembled in OSA.
Internal connector of the present invention can be provided with groove, and groove is received the lock pawl of pallet, and its further groove can be provided with the teat that limits retracted position and link position.In an example, groove can be provided with two teats, and retracted position can be limited between darker side-prominent portion and the end wall of described groove, and link position can be limited between two teats.In another example, in the time that groove is provided with three teats, retracted position can be limited between the darkest teat and the end wall of described groove, and link position can be limited between two more shallow teats.
Internal connector of the present invention can be provided with the Part II of Part I, receiving elastomeric element and the flange of receiving internal optical fiber and separate the partition wall of Part I and Part II.Elastomeric element can be placed between partition wall and flange, therefore, described lock pin is outwards promoted from described stop part.
Another aspect of the present invention relates to optical transceiver, and this optical transceiver comprises housing, conducting strip and resinous optical plug.Optical plug can comprise the sleeve assembly of drawing internal optical fiber with the arrangement of tap.Housing is provided with the region for optical plug is installed.This region can by sidewall and rear wall around.Conducting strip can be placed between optical plug and rear wall.
Sleeve assembly can also comprise the flange between the first cylindrical shell, the second cylindrical shell and the first cylindrical shell and the second cylindrical shell.Internal optical fiber is drawn from the second cylindrical shell with the arrangement of tap.The first cylindrical shell stretches in the cavity of optical plug through conducting strip.Optical plug can be provided with conducting strip is pressed against to the rear wall on the rear wall of housing, and the stage portion of the rear wall of this optical plug is received the flange of sleeve assembly.Housing can also be provided with cover, this cover optical plug is pressed against on the rear wall of housing and conducting strip between optical plug and the rear wall of housing.
Optical plug is characterised in that, each side of optical plug can be provided with lug, and the sidewall of housing can be provided with the recess of receiving lug.One end of lug is attached to the sidepiece of socket, and bending vertically from attachment.Bend can flexibly rotate around attachment, thereby conducting strip further can be pressed against on the rear wall of housing.The lug of the both sides of optical plug can be formed obliquely, and recess on each sidewall also can be formed obliquely.Lug can be provided with rib, can rib be flattened by the wall near recess.Conducting strip can be supatex fabric, or can be made up of the rubber that is coated with the conductive material contacting with the rear wall of housing.
The rear wall of housing can be provided with paired two incision.In pairs in otch, the pitch between the pitch of pair of notches and two optical axises of SC connector equates, and pitch between two optical axises of another pitch of another paired otch and Lucent Connector equates.Optical plug of the present invention can be applied to SC type optical conenctor and LC type optical conenctor.
The rear wall of optical plug can be provided with multiple protuberances.Protuberance can be near conducting strip, thereby conducting strip can contact with the rear wall of housing reliably.Protuberance can be arranged on the whole outside surface of optical plug.In the time that the housing of this optical transceiver comprises that upper shell and lower house and optical plug are placed between upper shell and lower house, the protuberance on the outside surface of Socket casing can contact with lower house with upper shell, thereby can be effectively and shielded from light transceiver reliably.
In addition, optical transceiver of the present invention can be provided with the shielding gasket being placed between upper shell and lower house, and particularly, shielding gasket can be arranged on the sidewall and rear wall being formed in lower house, to surround the region that optical plug is installed.Shielding gasket not only can contact with lower house with upper shell, and contacts with the conducting strip between rear wall and the rear portion of optical plug, thereby can be more effectively and shielded from light transceiver reliably.
According to optical transceiver of the present invention on the other hand, optical transceiver comprises multiple OSA, circuit board, plug-board and housing.Circuit board is provided with the electronic circuit being connected with OSA.Plug-board is provided with the electric plug coordinating with main connector.Connector is electrically connected with circuit by the electric connector being placed between plug-board and circuit board.Optical transceiver of the present invention is characterised in that, plug-board is supported rigidly by housing, and circuit board is supported flexibly by housing.Housing can comprise upper shell and lower house, and wherein plug-board is arranged between upper shell and lower house, and circuit board is also arranged between upper shell and lower house, but across liner.
On two surfaces of front and back of described plug-board, can be provided with rib, receive the rib in plug-board and upper shell and lower house are provided with groove.Can between rib and groove, insert crown cap, the shape of this crown cap conforms to the shape of rib.Crown cap can be provided with the multiple shanks and the multiple fin that all contact and push this wall with the wall of groove.Thereby plug-board can be supported rigidly by upper shell and lower house.
On the other hand, the sidepiece of the front and back of circuit board can be provided with grounding pattern.Liner can contact with grounding pattern.The grounding pattern that is formed on same sidepiece place of the front and back of circuit board can couple together via the conductive pattern at hole or covering board edge, thereby can effectively shield the circuit being arranged on circuit board.The sidepiece of upper shell and lower house can be provided with the groove of receiving each liner.In modified example, liner can be the U-shaped metal parts with flat part and a pair of shank.Flat part can wrap up board edge, and shank can be provided with the fin contacting with lower house with upper shell.Even if liner has above-mentioned arrangement, circuit board also can be placed between upper shell and lower house flexibly, and makes upper shell and the lower house circuit on screened circuit plate effectively together with liner.
Another aspect of the present invention relates to pluggable optical transceiver, this pluggable optical transceiver and main system are pegged graft, and there is following obvious characteristic, in the time that the optical plug of optical transceiver is received aerial lug, can prevent that optical transceiver from separating with main system, and except above distinctive function, can also be in the time of optical transceiver and main system disengaging, in the time that optical transceiver is not pegged graft with main system, prevent optical transceiver receiving aerial lug of the present invention.
Optical transceiver of the present invention comprises the optical plug of receiving aerial lug; The screw rod lock that optical transceiver is engaged with main system; There is the bolt of above-mentioned function; With the housing for optical plug, screw rod lock and bolt are installed.That is to say, in the time that optical plug is vacant, one end of bolt can be stretched in optical plug, and screw rod lock can be provided with the groove of the other end of receiving bolt.
At the original position of optical transceiver, the position that optical transceiver and main system depart from, the other end of screw rod lock pushing bolt, correspondingly, the other end of bolt can stretch in optical plug, thus, prevents optical plug receiving external optical connector.When screw rod lock being fixed to main connector optical transceiver is engaged with main system, the groove alignment that the other end of bolt can be locked with screw rod, thus generation redundant space is received the other end of bolt.Aerial lug is inserted in optical plug, thereby aerial lug can push one end of bolt, and the other end of bolt can be placed in to the groove of screw rod lock.Thereby only, in the time of aerial lug and main system grafting, aerial lug can engage with optical plug.In addition, because the other end of bolt is received within the groove of screw rod lock, therefore can utilize the bolt as stop part, prevent that screw rod lock from removing from main system, can prevent that optical transceiver from separating with main system.
Bolt can be provided with elastic, and housing can be provided with the space of receiving elastic.Under the resilient force causing in the operation of the elastic by space, bolt can automatically restore to original position.In addition, optical plug can be provided with otch, and one end of bolt is through otch.Bolt can stretch in optical plug by otch.
Another aspect of the present invention relates to the coupling assembling being placed in pluggable optical transceiver.Coupling assembling can comprise lock unit, internal optical fiber and connector shell.Lock unit supports OSA, and comprises a pair of lock pawl.The end of internal optical fiber has lock pin, flange and volute spring, and helical spring end is near flange.Connector shell can comprise the first space, second space and separate the middle part separator of described the first space and described second space.Helical spring the other end is near middle part separator, and the end of internal optical fiber is received in the first space.The internal optical fiber that second space is fixing and described end is continuous.Coupling assembling of the present invention is characterised in that, the first space of connector shell engages with the lock pawl of lock unit, so that internal optical fiber is connected with OSA optics.The first space of connector shell can be provided with a pair of side chain all being supported by middle part separator.Side chain can have U-shaped section, can fix reliably and be bonded to the lock pawl of lock unit in this U-shaped section.
Coupling assembling of the present invention can also be provided with the lock pin stop part that is connected device housings support, to lock pin, flange and volute spring are placed between lock pin stop part and middle part separator.Thereby, can prevent that internal optical fiber from separating with connector shell.The a pair of shank that lock pin stop part can be provided with beam and extend from beam, thus U-shaped section formed.Beam can have the opening being passed by lock pin, and the flange of the root of lock pin can abut against on beam.Shank can be provided with the lug locking together with connector shell.Therefore, can prevent that lock pin, flange and volute spring from separating with connector shell.
Brief description of the drawings
By describing the preferred embodiment of the present invention in detail below with reference to accompanying drawing, above-mentioned and other object, aspect and advantage will be understood better.
Figure 1A and Figure 1B show the optical transceiver according to the embodiment of the present invention, and wherein Figure 1A shows the optical transceiver of observing from front upper place, and Figure 1B shows the optical transceiver of observing from the back lower place;
Fig. 2 is the exploded view of optical transceiver;
Fig. 3 shows the main system that optical transceiver shown in Fig. 1 will be installed;
Fig. 4 A shows the inside of the first housing, and Fig. 4 B shows the inside of the second housing;
Fig. 5 A illustrates the front portion of optical transceiver inside enlargedly, and Fig. 5 B is the cut-open view of this part;
Fig. 6 A shows another housing that rear pallet is installed, and Fig. 6 B shows the rear pallet that is placed with internal optical fiber;
Fig. 7 A is the skeleton view that circuit board 18 and plug-board 19 are shown, Fig. 7 B shows the circuit board 18 without any element, and Fig. 7 C shows the cut-open view of the side edge part of circuit board, and Fig. 7 D shows plug-board 19;
Fig. 8 A is the horizontal cross of optical transceiver, shows circuit board and is placed on the liner between housing, and Fig. 8 B illustrates the sidepiece of the circuit board shown in Fig. 8 A enlargedly, and Fig. 8 C shows the modification grounding pattern being arranged on circuit board;
Fig. 9 A illustrates the skeleton view that is placed on two another kind of liners between housing, and Fig. 9 B is the horizontal cross that the sidepiece of the modification liner shown in circuit board and Fig. 9 A is shown;
Figure 10 A shows crown cap, and Figure 10 B shows modification crown cap, and Figure 10 C is the cut-open view that crown cap is shown, is arranged in the rib on groove and the plug-board of the first housing and the second housing;
The internal optical fiber that Figure 11 A shows optical multiplexer and extends from this optical multiplexer, and Figure 11 B shows the sleeve assembly being placed in optical plug;
Figure 12 is the skeleton view illustrating according to the front tray of the embodiment of the present invention;
Figure 13 A illustrates the skeleton view of front tray according to another embodiment of the present invention, and Figure 13 B shows the front portion of the optical transceiver that the front tray shown in Figure 13 A is installed, and wherein internal optical fiber is arranged in each slit of front tray;
Figure 14 is the skeleton view that the internal connector being connected with lock unit is shown;
Figure 15 A shows the internal connector of observing from rear, and Figure 15 B shows the internal connector of observing from front;
Figure 16 A is the exploded view of internal connector according to another embodiment of the present invention, Figure 16 B shows the internal connector shown in Figure 16 A fitting together, Figure 16 C shows connector body, and Figure 16 D is the cut-open view that the internal connector shown in Figure 16 B engaging with the lock pawl of front tray is shown;
Figure 17 is the skeleton view that another kind of internal connector is shown;
Figure 18 A shows the lock unit according to the embodiment of the present invention, and Figure 18 B shows lock unit according to another embodiment of the present invention;
Figure 19 A is the side view of OSA, and Figure 19 B is the rear view of a slit of lock unit;
Figure 20 is the cut-open view intercepting along the optical axis that is placed on the internal optical fiber in internal connector;
Figure 21 A illustrates the anterior skeleton view of the first housing according to another embodiment of the present invention, and Figure 21 B is the anterior front elevation of the first housing according to another embodiment of the present invention;
Figure 22 A show observe from rear according to the optical plug of the embodiment of the present invention, Figure 22 B shows the optical plug of observing from front, and Figure 22 C shows the exploded view of optical plug;
Figure 23 shows optical plug is arranged on to the step in the central region of the first housing;
Figure 24 shows the cover that is mounted to housing;
Figure 25 shows optical plug according to another embodiment of the present invention, and wherein the optical plug shown in Figure 25 has LC type structure;
Figure 26 A and Figure 26 B show the optical plug according to further embodiment of this invention;
Figure 27 shows the screw rod lock according to the embodiment of the present invention;
Figure 28 has illustrated the structure that arranges of housing for placing screw rod shown in Figure 27 lock;
Figure 29 is the skeleton view illustrating according to the bolt of the embodiment of the present invention;
Figure 30 A is the cut-open view of optical plug bolt and screw rod lock while separating with aerial lug, Figure 30 B is the front elevation of optical plug bolt and screw rod lock while separating with aerial lug, and the cut-open view of Figure 30 C to be optical plug receive when aerial lug bolt and screw rod lock, and Figure 30 D is the front elevation of optical plug bolt and screw rod lock while receiving aerial lug;
Figure 31 A to Figure 31 D shows the step of laying internal optical fiber;
Figure 32 shows internal optical fiber is placed on to the step in front tray;
Step when Figure 33 A shows the position of internal connector in being connected with OSA, and Figure 33 B shows the step of internal connector in the time not interfering the another location of OSA; And
Figure 34 shows OSA and circuit board and plug-board two boards is arranged on to the step on housing.
Embodiment
Below, be described with reference to the drawings according to preferred embodiments more of the present invention.In the description of accompanying drawing, represent identical parts with identical reference marker and label, and repeat no more.
the first embodiment
Figure 1A and Figure 1B are according to the skeleton view of the optical transceiver 1 of the embodiment of the present invention, and wherein Figure 1A shows the optical transceiver 1 of observing from front upper place, and Figure 1B shows the optical transceiver 1 of observing from the back lower place.In the following description, front side is corresponding with a side that is provided with optical plug 14, rear side is corresponding with the side that electric plug 19b is installed, top or top side corresponding with the side that the first housing 10a is installed with respect to the second housing 10b, and below or bottom side corresponding with a side of installation the second housing 10b.Fig. 3 shows the main system that optical transceiver 1 will be installed.Main system 2 is typically provided with system board 2a, and main connector 3a and pair of guide rails 3b are installed on system board 2a.In mainboard 2a, be provided with the panel 2b of port 2c.Optical transceiver 1 of the present invention can be pegged graft with main connector 3a by inserting in port 2c.
Optical transceiver 1 shown in Fig. 1 and Fig. 2 is provided with and is of a size of 128 × 72 × 14mm 3housing 10, this size by the multi-source agreement relevant with so-called CFP transceiver (multi-source agreement) determine.The housing 10 of the present embodiment is made of metal.
Optical transceiver 1 is provided with the cover 12 that is positioned at housing 10 front ends.Optical plug 14 is contained in the middle part of cover 12 by set screws.Housing 10 is also provided with a pair of screw rod lock 16 that is positioned at cover 12 two ends.The front end of screw rod lock 16 is provided with the knob 16a extending from cover 12, and the rear end of screw rod lock 16 is formed with screw thread 16b.This screw thread 16b tightens together with the threaded hole at the both sides place that is arranged on the electric connector 3a that is placed in main system 2, thereby, optical transceiver 1 is fixed in main system 2.
The both sides of housing 10 are also provided with rib 10c.Rib 10c is provided with by the screw rod lock 16 space 10g that pass.Rib 10c has along the function that is arranged on guide rail 3b in main system 2 guiding optical transceiver 1, is arranged in main system 2, and is convenient to electric plug 19b and engages with the electric connector 3a of main system thereby be convenient to optical transceiver 1.Be provided with electrical pads according to the electric plug 19b of the present embodiment, in the beam overall 72mm of optical transceiver 1, the quantity of electrical pads exceedes 140, thereby the pitch between electrical pads is less than 1mm.Therefore,, for electric plug 19b is engaged with electric connector 3a, preferably or inevitably use as aligning guides such as rib 10c and guide rail 3b.
Fig. 2 is the exploded view of the optical transceiver 1 shown in Figure 1A and Figure 1B.Fig. 2 shows the optical transceiver 1 that beneath arrives in the past.Housing 10 comprises the upper shell 10a that is called as the first housing and the lower house 10b that is called as the second housing.In the space being formed by two housing 10a and 10b, multiple optical elements and electrical equipment are installed.Optical transceiver 1 comprises optical plug 14, optical multiplexer 20, optical demultiplexer 22, front tray 24, two groups of internal connectors 26 and 28,4 ROSA of lock unit 30,4 TOSA 32, circuit board 18 and plug-boards 19.Each element is roughly described below.
Fig. 4 A shows the inner structure of the first housing 10a, and Fig. 4 B shows the inside of the second housing 10b.
With reference to figure 4A, the inside of the first housing 10a is divided into R 1to R 5five parts.Be positioned at the Part I R of the front end of the first housing 10a 1for optical plug 14 and two optical elements that are positioned at optical plug 14 both sides, i.e. optical multiplexer 20 and optical demultiplexer 22 are installed.Immediately Part I R 1part II R 2be used for installing front tray 24.Immediately Part II R 2part III R 3be used for installing internal connector 26 and lock unit 28.Immediately Part III R 3part IV R 4for the circuit board 18 for electronic circuit is installed, and Part V R 5for the plug-board 19 for electric plug 19b is installed.ROSA 30 and TOSA 32 are placed in Part III R 3rear end.
In this optical transceiver 1, only Part IV R 4for installing electronic elements, and other parts R 1to R 3be used for installing optical element.Rear end 10f using the first housing 10a protects plug-board 19 as top board.Thereby the optical transceiver 1 of the present embodiment is distinguished significantly the part of optical element and the part of installing electronic elements is installed.In addition, utilize internal connector 26 and lock unit 28 realize OSA 30 and 32 and internal optical fiber between optics be connected, and without use any fibre-optical splice.
With reference to figure 4A, the inside of the first housing 10a is provided with multiple labyrinths.Part I R 1middle part be provided with the region 11a for optical plug 14 is installed.The both sides of central region 11a are set to for optical multiplexer 20 and optical demultiplexer 22 are installed.Two regions that optical element 20 and 22 is fixed by screws in separately.
Part II R 2be set to for front tray 24 is installed.Part II R 2than Part I R 1thick, thus the 11b of platform portion formed.The 11b of platform portion is provided with multiple groove G 2, and be formed with in the present embodiment six groove G 2, at these grooves G 2interior guiding and settle internal optical fiber for optical plug 14 and optical multiplexer 20 and optical demultiplexer 22 are linked together, for optical fiber that optical multiplexer 20 and TOSA 32 are linked together and the optical fiber for optical demultiplexer 22 and ROSA 30 are linked together.
Front tray 24 is fixed on the 11b of platform portion by screw being screwed in center pit 11c.The both sides of the 11b of platform portion are provided with the screw hole that the second housing 10b is fixed to the first housing 10a.
Internal connector 26 is arranged on Part III R 3the front end that is formed with the 11d of platform portion.The 11d of this is provided with the Part II R with front 2in groove G 2six groove G that are connected 4.Front tray 24 and internal connector 26 are arranged on rotine positioning separately, and these parts 24 and 26 shelter from and are fixed on groove G 2and G 4in internal optical fiber, this can prevent that internal optical fiber from departing from groove G 2and G 4.
Part III R 3rear side lock unit 28 is installed.Part III R 3in the 11d of platform portion and Part III R 3in the 11e of platform portion mutually continuous.In addition, be positioned at Part III R 3the groove G of front side 4also with Part III R 3groove G 6be connected.But, by being merged into a groove, two grooves in outside make groove G 6quantity reduce to 4.Part III R 3rear end be provided with the multiple saddle 11f for OSA 30 and 32 is installed, the shape of saddle 11f is corresponding with the profile of the bar portion of OSA 30 and 32.It is upper that OSA 30 and 32 can be arranged on these saddles 11f, heat radiator is placed between bar portion and saddle 11f and by the flange of OSA 30 and 32 and is placed on lock unit 28.Then, lock unit 28 is fixed to the first housing 10a with screw, so that OSA 30 and 32 aims at the first housing 10a.
Part IV R 4also be provided with the 11g of another and the groove G with front 6consecutive groove G 8.Be placed in groove G 8in internal optical fiber at Part IV R 4inside turn, and the corresponding object component that leads.Thereby the 11g of platform portion has the plane of bending shape that limits internal optical fiber curvature.The 11g of this with IC(on circuit board 18 for example for driving the clock data recovery circuit in driving circuit and the receiving element of luminescent device of transmitting element) relative position is provided with multiple pairs of platform portions.Among element on circuit board 18, the power that above-mentioned these IC consume is large.The heat that these IC produce diffuses to the first housing 10a effectively by two platform 11g of portion and 11h.Two platform 11h of portion can directly contact with IC or by heat radiator and IC indirect contact.
Fig. 4 B illustrates according to the inside of the embodiment of the present invention the second housing 10b and is mounted to the skeleton view of liner 34a of the second housing 10b.The second housing 10b comprises Part I Q 1to Part III Q 3and for the region 11n of optical plug 14 is installed.Part I Q 1part I R with the first housing 10a 1correspondence, Part II Q 2part II R with the first housing 10a 2with Part III R 3correspondence, and Part III Q 3part IV R with the first housing 10a 4corresponding.
Liner 34a is along Part I Q 1to Part III Q 3two sides, Part I Q 1front end and the rear end of central region 11n extend.As shown in Figure 4 B, the second housing 11b is provided with multiple lug boss 11m in liner 34a extends the path of following.During assembling optical transceiver 1, lug boss 11m is fixed-bearing 34a temporarily.The second housing 10b can be provided with thin-walled instead of lug boss 11m along the inner side of sidewall 11o.Thin-walled also can prevent that liner from scattering during assembling optical transceiver 1.
Optical plug 14 is received external optical connector (not shown in Fig. 1 to Fig. 4), and the optical device in the external fiber in aerial lug and optical transceiver 1 is coupled together, to carry out full duplex and optical WDM communication.With reference to figure 2, optical plug 14 comprises housing 14a, sleeve retainer 14b, conducting strip 14c and two sleeve 20c and 22c.Optical plug 14 is placed in the anterior central space 11a being formed by two housing 10a and 10b.
The middle part of panel 12 is provided with optical port 12a.With screw, panel 12 is fixed to the antetheca 10d of the first housing 10, this makes two cavitys of optical plug 14 expose from optical port 12a.Optical plug 14 is not only arranged between two housing 10a and 10b, also makes sleeve rack 14b, conducting strip 14c and sleeve 20c and 22c be arranged on together between panel 12 and rear wall 11j, and rear wall 11j is positioned at the rear side of central space 11a.Socket casing 14a is provided with two cavitys, and a pair of lock pawl of sleeve 20c and 22c and sleeve retainer 14b stretches in these two cavitys.In the present embodiment, the physical size of lock pawl and sleeve 20c and 22c meets the specification of so-called SC connector.The mode that internal optical fiber is arranged with tap is stretched out from the end of sleeve 20c and 22c.Particularly, tap (pig-tailed) optical fiber is extracted out from sleeve via the U-shaped or the semi-circular cut-out that are formed on the rear wall in space.Conducting strip 14c is placed between rear wall 11j and the flange of sleeve 20c, to prevent that electromagnetic radiation is from the interior effusion of optical transceiver 1.
Optical multiplexer 20 and optical demultiplexer 22 are arranged on the both sides of optical plug 14.Optical multiplexer 20 carries out multiplexed to the 4 road light signals that send from each TOSA 32 and have respectively a specific wavelength differing from one another.And the light signal that optical demultiplexer 22 provides external fiber is divided into the 4 road light signals respectively with the wavelength differing from one another, and these light signals are offered to each ROSA 30.
, after being laid in housing 10, enter optical multiplexer 20 and optical demultiplexer 22 from the rear side of optical multiplexer 20 and optical demultiplexer 22 from two internal optical fibers of each sleeve 20c and 22c extraction.These two internal optical fibers are also tap structure with being connected of optical multiplexer 20 and signalling separation vessel 22.As described hereinafter, be provided with according to the optical transceiver 1 of the present embodiment four internal optical fibers that optical multiplexer 20 and four TOSA 32 are linked together and by optical demultiplexer 22 and four other four internal optical fibers that ROSA 30 links together.Thereby 8 internal optical fibers, under the guiding of front tray 24, are laid in housing 10 altogether.
Front tray 24 can guide to TOSA 32 by four internal optical fibers of drawing from optical multiplexer 20, and other four internal optical fibers of drawing from optical demultiplexer 22 are guided to ROSA 30.Optical transceiver 1 links together the multiple optical element opticals in housing 10.Therefore, internal optical fiber need to process unnecessary length, to improve the throughput rate of optical transceiver 1.Front tray 24 in housing 10 can be arranged the internal optical fiber of lengthening in an orderly manner.In addition, the first housing 10a can utilize die cast metal method to make, and has enough thickness and be formed for the groove at inside guiding optical fiber.In groove, arrange the internal optical fiber of lengthening through front tray 24 by the internal optical fiber that makes to lengthen, can improve the throughput rate of optical transceiver 1, especially can shorten built-up time, and reduce to damage the possibility of internal optical fiber.
Be provided with two groups of internal connectors 26 at the rear side of front tray 24.One group of internal connector 26 engages with the internal optical fiber that causes ROSA 30 from optical demultiplexer 22, and another group internal connector 26 engages with the internal optical fiber that causes TOSA 32 from optical multiplexer 20.The quantity of internal connector is corresponding with the quantity of ROSA 30 and TOSA 32, and be can separate to coordinate with corresponding ROSA 30 and TOSA 32 respectively.Internal connector 26 can operate separately.
As described in subsequent section in instructions, during assembling optical transceiver 1, the unnecessary length of internal optical fiber is placed in to front tray 24 and is formed on the groove on housing 10, and internal connector 26 is temporarily coordinated with the finger of front tray 24.ROSA 30 is arranged on together with lock unit 28 to housing 10a with TOSA 32 upper, makes lock unit 28 and internal connector 26 opposite.Then, internal connector 26 is slided backward to internal connector 26 is locked with corresponding lock unit 28, thereby the internal optical fiber of drawing from optical multiplexer 20 can be connected with TOSA 32, and other internal optical fiber of drawing from optical demultiplexer 22 can be connected with ROSA 30.Thereby, can by the bindiny mechanism of internal connector 26 and lock unit 28 realize OSA 30 and 32 and external fiber between optics be connected.Therefore, even in the time breaking down for one in OSA 30 and 32 only, also can be only by an only internal connector 26 corresponding with fault optical module be removed and easily and rapidly replaced fault OSA from lock unit 28.
The optical transceiver 1 of the present embodiment is provided with circuit board 18 and plug-board 19 at the rear of OSA 30 and 32.On two surfaces of circuit board 18, multiple electrical equipments are installed, the rear end of plug-board 19 is provided with electric plug 19b.
Electronic component comprises multiple IC that heat dissipation is large, for example, for driving the clock data recovery circuit in driver and the receiving element of transmitting element LD.In order to protect thermally conductive pathways not to be subject to the impact of these IC, multiple the portions with these IC thermo-contacts are set on the surface, inside of the first housing 10a.Housing 10a and 10b are provided with the thick metal shell being formed by casting die, and this thick metal shell has large thermal capacity and can be formed with table top.In addition, the depression between table top can play the effect at inside guiding internal optical fiber.
The plug-board 19 that is arranged at the rear of circuit board 18 is provided with electric plug 19b.This optical transceiver 1 can have at 4 passages for transmitting element the light transmission speed of 40Gbps or 100Gbps when communicating by letter with main system for other 4 passages of receiving element.So, need each passage to send electric signal with the speed of 10Gbps or 25Gbps.The electric signal of this high speed is conventionally according to LVDS(low-voltage differential signal) standard processes.In other words, need each signalling channel to there is a pair of signal pins, so altogether need 16 pins to carry out transmission of electric signals.In addition, the transmission of high speed signal must increase ground connection (GND) line.Conventionally signal wire is placed between a pair of GND line, to ensure signal quality.In addition, because optical transceiver 1 is provided with 4 passages and other 4 passages for receiving for sending, therefore the power consumption of whole circuit becomes relatively large, and needs multiple power pins.
Therefore, this optical transceiver 1 is provided with has the electric plug 19b that exceedes 140 pins in the overall with of 72mm, thereby the pin pitch of connector 19b is inevitably decreased to the distance that is less than 1mm, and requires circuit board 18 to have high dimensional accuracy.When configure the high electric plug of this dimensional accuracy on large substrate time, can make circuit board 18 become that cost is high and efficiency is low.The circuit board of this optical transceiver 1 is divided into two parts, and part 18 area are large and circuit is installed, and another part 19 is provided with electric plug 19b in relatively little area.
Description is arranged on to each optical element in optical transceiver 1 and the modification of electrical equipment below.
Refer again to Fig. 2, Fig. 4 A and Fig. 4 B, the optical transceiver 1 of the present embodiment can be provided with two liner 34a and 34b, and liner has rod shape and is made up of elastomeric element, and elastomeric element is generally the proofed sleeve with the coat of metal.
As shown in Figure 4 B, with Part I R 1corresponding part Q 1in, liner 34a is at sidewall and be defined on the wall of region 11n that optical plug 14 is installed and extend.With Part II R 2with Part III R 3corresponding part Q 2in, liner 34a extends on the sidewall of the second housing 10b.With Part IV R 4corresponding part Q 3in, liner 34a is placed on the groove 10o that is placed in top side wall, and extends along the grounding pattern of circuit board 18.Another liner 34b is positioned in the groove 10h of the first housing 10a, and extends along another grounding pattern being arranged in the back side of circuit board 18.
In the time that the first housing 10a and the second housing 10b are fitted together, make at Part I R 1to Part III R 3in, the first liner 34a is placed between housing 10a and 10b, and at Part IV R 4in, liner 34a is placed between the second housing 10b and the lip-deep grounding pattern of circuit board 18, and another liner 34b is placed between another grounding pattern on the back side of the first housing 10a and circuit board 18.This arrangement of two liner 34a and 34b and housing 10a and 10b can make circuit on circuit board 18 not only with the outside of optical transceiver 1 and also with the region 11a electric shield that optical plug 14 is installed.
Fig. 5 A and Fig. 5 B illustrate the front portion of optical transceiver enlargedly, and wherein Fig. 5 A is planimetric map and Fig. 5 B is cut-open view.In the time that the second housing 10b and the first housing 10a are fitted together, liner 34a is maintained between two housing 10a and 10b.With reference to figure 5A, liner 34a can extend on the sidewall 11i of the first housing 10a and rear wall 11j, with around central region 11a.In addition, as shown in Figure 5 B, liner 34a can contact with the conducting strip 14c being placed between optical plug 14 and rear wall 11j, thus shielding space 11a reliably.
To further describe circuit board 18.Fig. 7 A is the skeleton view that circuit board 18 and plug-board 19 are shown, Fig. 7 B shows the not circuit board 18 with any element, and Fig. 7 C shows the cut-open view of the side edge part of circuit board, and Fig. 7 D shows plug-board 19.As mentioned above, be divided into two parts according to the plate for electronic component of the optical transceiver 1 of the present embodiment, part is circuit board 18 and another part is plug-board.Two boards 18 and 19 is linked together by edge web member.
Circuit board 18 is provided with multiple electrical equipments.ROSA 30 is via corresponding FPC(flexible print wiring) plate 18d is connected with a surface of circuit board 18, and TOSA 32 is also connected with another surface of circuit board 18 via corresponding FPC plate 18d.This arrangement receiving element and transmitting element being separated by means of above-mentioned surface can reduce two electricity between unit and crosstalk.Clock and data recovery IC 18r is arranged near side ROSA30 on the front surface of circuit board 18, and driver IC (not shown in Fig. 6 A) is arranged near side TOSA 32 but goes up overleaf.The layout of CDR IC 18r and the layout of driver IC make the optical transceiver 1 of the present embodiment can reach the transmission speed of 40Gbps or 100Gbps.
Fig. 6 A illustrates the skeleton view of the first housing 110a according to another embodiment of the present invention, and Fig. 6 B is the skeleton view that the first housing 110a of whole optical elements has been installed in inside.As shown in Figure 6A, the Part IV R of the first housing 110a 4save groove G 8, and alternatively, at Part IV R 4be provided with two 111g of platform portion.A 111g of platform portion is formed near of the saddle 111f that is positioned at sender side, and the 111g of another is formed on receiver-side and is positioned at part R 4middle part.These two 111g of platform portion are provided with the region for arranging heat radiator 18t, and the position in this region is corresponding to the position that is arranged on the driver IC on circuit board 18.The 111g of platform portion forms the two platform 111h of portion that contact with the CDR IC being arranged on circuit board 18.
Part IV R 4in be formed as the plane for rear pallet 136 is installed around other region of the 111g of platform portion.At Part IV R 4in, rear pallet 136 can guide internal optical fiber F 2to F 8.Rear pallet 136 comprises mainboard 136a, fastening part 136b and multiple eaves 136c of portion.Mainboard 136a has and Part IV R 4in the roughly the same shape of shape of open section.Fastening part 136b is provided with the hole of aiming at the threaded hole in the 111g of platform portion.Rear pallet 136 can be fixed on the first housing 110a by screw.The 136c of eaves portion can retrain internal optical fiber F 2to F 8.Particularly, the 136c of each eaves portion lifts from outer rim and the inner edge of mainboard 136a, and curves inwardly.The sweep of the 136c of eaves portion can covering internal optical fiber F 2to F 8thereby,, can prevent internal optical fiber F 2to F 8scatter.The surface of the 136c of eaves portion can directly contact or indirectly contact by heating radiator with circuit board 18, thereby guarantees from another thermally conductive pathways of circuit board 18 to first housing 110a.
As shown in Figure 7 B, one end of circuit board 18 is provided with edge connector 18p, and wherein edge connector comprises multiple electrical pads.Circuit board 18 is also provided with marginal portion 18f and a pair of grounding pattern 18e along each edge 18f.Although not shown in Fig. 7 B, the back side of circuit board 18 is also provided with grounding pattern 18e in the position corresponding with grounding pattern 18e on positive 18a, and as shown in Fig. 7 C, these grounding patterns 18e is connected by hole 18v.Grounding pattern 18e on the positive 18a of circuit board 18 electrically contacts by liner 34a and the second housing 10b, and grounding pattern 18e on the back side contacts with the first housing 10a by liner 34b.Thereby, be arranged on electronic component on circuit board 18 be grounded housing around.
Fig. 8 A is the horizontal cross of optical transceiver 1, and Fig. 8 B illustrates the marginal portion of optical transceiver 1 enlargedly.
The edge 18f of circuit board 18 is placed between the first housing 10a and the second housing 10b by each liner 34a and 34b.Because liner 34a and 34b are made up of elastomeric element, therefore circuit board 18 can be subject to the resiliency supported of housing 10a and 10b, this can reduce by (, being welded to connect between the solder joint of edge connector 18p and socket pin 19g) the caused stress of being connected between circuit board 18 and plug-board 19.
Because liner 34a and 34b can be made up of conductive material, and contact with the grounding pattern 18e of circuit board 18, thereby realize the frame ground of circuit board 18, i.e. chassics earth.
Fig. 8 C is the cut-open view that variant embodiment of the present invention is shown, wherein Fig. 8 C also illustrates the marginal portion 18f of circuit board 18 enlargedly.Embodiment shown in Fig. 8 C is provided with the grounding pattern 18w being formed as the edge 18f parcel of circuit board 18.When needs are on circuit board 18 to high-density when mounting circuit, circuit board 18 is difficult to arrange multiple grounded circuits that the front of circuit board 18 and the back side are coupled together sometimes.In this case, can be by contacting provide chassics earth with the first housing 10a with the second housing 10b with 34b via conductive gasket 34a by the grounding pattern 18w of the edge parcel of circuit board 18.
Fig. 9 A shows according to the variant embodiment of liner 134 of the present invention, and Fig. 9 B illustrates the section of the marginal portion of the circuit board 18 of realizing with the modification liner 134 shown in Fig. 9 A enlargedly.Liner 134 is for having the U-shaped shape of flat part 134a and two shank 134b and 134c.The U-shaped section of liner 134 can wrap up the marginal portion 18f of circuit board 18.In addition, shank all has multiple fin 134d and 134e, wherein fin and the first housing 10a and the second housing 10b Elastic Contact.Liner 134 shown in Fig. 9 A and Fig. 9 B can play the effect identical with liner 34.
With reference to figure 7D, plug-board 19 is provided with socket 19c and plug portion serve 19f.Socket 19c comprises multiple pin 19g, and receives the edge connector 18p of circuit board 18.Pin 19g can be soldered to the solder joint of edge connector 18p, and is electrically connected to each connector solder joint 19b in plug portion serve 19f.Therefore,, in the time that the solder joint 19b of plug portion serve 19f coordinates with the connector 3a in main system 2, the circuit on circuit board 18 can be electrically connected with main system 2.
Plug-board 19 can also comprise teat 19d and rib 19e.Teat 19d is formed on a side of plug portion serve 19f, and rib 19e is formed on two surfaces of socket 19c.Refer again to Fig. 2, optical transceiver 1 can be provided with crown cap 35 and be arranged in the groove 10v of the first housing 10a, and the shape of parcel rib 19e can be made and be had by sheet metal to described crown cap 35.The groove 10v of housing 10a receives rib 19e together with crown cap 35.Similarly, the second housing 10b can be provided with another groove 11v, together with the rib 19e on the back side of crown cap 35 and plug-board 19, receives.Crown cap 35 can with housing 10a and 10b Elastic Contact.
In the layout around plug-board 19, teat 19d can be near the rear wall 10e of the first housing 10a, to circuit board 18 and plug-board 19 are located in the time that optical transceiver 1 coordinates with the electric connector 3a of main system 2.In addition,, because the rib 19e on plug-board 19 is placed in groove 10v and 11v, therefore can prevent that backlash occurs plug-board 19 extract connector 19b out from electric connector 3a time.The layout of rib 19e and teat 19d can protect plug-board 19 not to be subject to the impact of mechanical stress.
Crown cap 35 and the details for the treatment of the mechanism fitting together with plug-board 19 will be further described.Figure 10 A shows the crown cap 35 according to the embodiment of the present invention.Thereby crown cap 35 has the section that U-shaped section meets plug-board 19 center rib 19e.Particularly, crown cap 35 comprises flat part 35a, multiplely has compared with the main shank 35b of length and width degree and have narrower width and than the more outwardly directed auxiliary shank 35d of main shank 35b.Main shank 35b forms in the bending of the two edges place of flat part 35a, and auxiliary shank 35d only forms in edge's bending of flat part 35a.Two shank 35b and 35d are alternately arranged with each other.In the flat part 35a of crown cap 35, be also provided with multiple fin 35c.
As shown in Figure 4 A and 4 B shown in FIG., the rear end of the first housing 10a and the second housing 10b is respectively arranged with groove 10v and the 11v for placing crown cap 35.Figure 10 C is the cut-open view that rib 19e, crown cap 35 and groove 10v and 11v are shown.The crown cap 35 that two lip-deep rib 19e of plug-board 19 can be had U-shaped section covers, and crown cap 35 is placed in the respective slot 10v and 11v of housing 10a and 10b.Auxiliary shank 35d contacts with diapire with the rear wall of groove 10v and 11v with fin 35c.
Figure 10 B shows crown cap 135 according to another embodiment of the present invention.The crown cap 135 of the present embodiment also has the U-shaped section with the form fit of rib 19b.The sheet metal 135 of the present embodiment, except main shank 135b and auxiliary shank 135d, is also provided with lug 135e.Lug 135e extends towards the direction contrary with the bearing of trend of auxiliary shank 135d.The lug 135e of the present embodiment makes the direction of crown cap be easy to difference.
In another variant embodiment, groove 10v and 11v can have two kinds of degree of depth that are alternately arranged with each other.Darker part can be received fin 35c, that is to say, the end of the fin 35c of crown cap 35 does not contact with the bottom of groove 10v and 11v.In this embodiment, crown cap 35 is not subject to along the impact of the elastic force of the depth direction of groove 10v and 11v.
Auxiliary shank 35d and rib 19e can prevent that crown cap 35 from sliding in groove 10v and 11v reliably; thereby; even when optical transceiver 1 being arranged in main system 2 or when main system 2 is dismantled, also can edge protection edge connector 18p and socket pin 19g be not damaged.On the other hand, the first housing 10a and the second housing 10b carry out resiliency supported to circuit board 18.
Below, the internal optical fiber F that describes optical multiplexer 20, optical demultiplexer 22 and stretch out from optical multiplexer 20 and optical demultiplexer 22 2to F 8.Although illustrating, Figure 11 A there is internal optical fiber F 2and F 6the skeleton view of optical multiplexer 20, but be also applicable to optical demultiplexer 22 and internal optical fiber F with arranging identical layout shown in Figure 11 A 4and F 8.
In the rear end of optical multiplexer 20, draw two internal optical fiber F that lead to TOSA 32 from a side of optical multiplexer 20 6, and draw three internal optical fiber F from opposite side 6and F 2.These internal optical fibers F 2and F 6there is tap structure.During assembling optical transceiver 1, will be with five internal optical fiber F 2and F 6optical multiplexer 20 be arranged on the first housing 10a.Owing to having pre-determined the position of optical element and having determined the length of the optical fiber that optical element is coupled together, therefore adjust in advance internal optical fiber F 2to F 6length is separately to be suitable for installation.The optical transceiver 1 of the embodiment of the present invention is provided with internal connector by internal optical fiber F 6couple together with TOSA32, and without using any fused fiber splice joint.Fusion splice need to prepare the optical fiber of unnecessary length conventionally, and this unnecessary length of optical fiber need to be encapsulated in housing in an orderly manner.As mentioned above, this optical transceiver uses internal connector 26, and without the internal optical fiber F that any unnecessary length is set 2and F 6.
As shown in Figure 11 B, sleeve assembly can be made of metal and start to comprise the first cylindrical shell 20c, flange 20e and the second cylindrical shell 20f from its front portion.The second cylindrical shell is received the internal optical fiber F from optical multiplexer 20 or optical demultiplexer 22 2and F 4.Sleeve assembly can be connected to the internal optical fiber F being fixed in the second cylindrical shell 20f by the external fiber that inserts the first cylindrical shell 2and F 4so,, external fiber can be connected with TOSA 32 optics.
Below, be arranged on according to the front tray 24 on the optical transceiver 1 of the embodiment of the present invention, internal connector 26 and lock unit 28 further describing.
Figure 12 is the skeleton view that the front tray 24 of the embodiment of the present invention is shown.As mentioned above, front tray 24 is provided with internal optical fiber F optical multiplexer 20 and TOSA 32 being linked together for guiding 64 slit 24a and for guiding the internal optical fiber F that optical demultiplexer 22 is connected with ROSA 30 8other 4 slit 24a.Slit 24a has identical pitch at rear side.The layout of pitch and OSA 30 and 32 is roughly equal, but slit 24a is along with near optical plug 14 and gradually towards middle bent.
The rear end of each slit 24a is provided with a pair of lock pawl 24b.Lock pawl 24b can engage with internal connector 26.The width of slit 24a is from rear to front constriction gradually, and slit 24a has stop part 24c and the 24d of eaves portion in front side, to prevent from being placed on the optical fiber F in each slit 24a 6and F 8scatter.A sidepiece of front tray 24 is provided with guide space 24e and wall 24g, and guide space 24e is leading to Part IV R 4internal optical fiber F 8pass, wall 24g is used for arranging internal optical fiber F 8curvature, and the other side of front tray 24 is provided with another guide space 24f and wall 24h, this guide space 24f is leading to Part IV R 4internal optical fiber F 6pass, this wall 24h is for restricted internal optical fiber F 6curvature.Can make screw pass mider hole 24r and engage this front tray 24 is fixed on the first housing 10a with the threaded hole 11c shown in Fig. 4 A.
Figure 13 A illustrates the skeleton view of front tray 124 according to another embodiment of the present invention, and Figure 13 B is illustrated in each slit, to be placed with internal optical fiber F 6and F 8the planimetric map of front tray 124.
Front tray 124 comprises anterior 124A and rear portion 124B.Rear portion is provided with threaded hole 124r and multiple slit 124a, and slit 124a is with a pair of lock pawl 124b and the 124d of eaves portion for preventing that internal optical fiber from scattering.Each side of rear portion 124B is also provided with top board 124s and guiding wall 124t and 124u, and top board 124s and guiding wall 124t and 124u are configured for following internal optical fiber F 6and F 8guide slit 124w, these internal optical fibers F 6and F 8along the edge of the first housing 10a by drawing longitudinally to towards laterally.
Anterior 124A can guide internal optical fiber F 6and F 8, and be provided with antetheca 124v and the front eaves 124x of portion.Antetheca 124v horizontal expansion, to prevent internal optical fiber F 6and F 8outstanding forward, and the front eaves 124x of portion extends back to cover the front portion of pallet 124 from antetheca 124v.Structure 124v and 124x can prevent internal optical fiber F 6and F 8scatter from anterior 124A.The top board 124s at the front eaves 124x of portion and sidepiece place can be by the sidepiece drawing along front tray 124 and towards the internal optical fiber F of transverse curvature 6and F 8cover.
Figure 14 shows the intermediate module that internal connector 26, lock unit 28 and OSA 30 form.The details of internal connector 26 is described below.As shown in Figure 15 A and Figure 15 B, the rear side of internal connector 26 and front side are respectively arranged with two space 26a and 26b.These two space 26a and 26b are separated by middle wall 26c.Rear space 26a receives and is attached at internal optical fiber F shown in Figure 11 A 6the coil component 20a at one end place.On each side pawl 26s of rear space 26a, be also provided with opening 26d, this opening 26d engages with the teat 28c of lock unit 28.Side pawl 26s has U-shaped section, and wherein the lock pawl 28b(of lock unit will be described in more detail below) be placed in U-shaped.Due to engaging of teat 28c and opening 26d, internal connector 26 can engage with lock unit 28.In engaging, internal optical fiber F 6lock pin 20b on top is inserted in the hole of sleeve 30d of ROSA 30, and this can make internal optical fiber F 6be connected with the semiconductor optical device optics in ROSA 30.
Be placed on coil component 20a in rear space 26a near middle wall 26c, to promote lock pin 20b towards ROSA 30 in the time that internal connector 26 engages with lock unit 28, thereby realize the end of lock pin 20b and be fixed on the physical contact between the end of the suspension column in sleeve 30d.Thereby the optical transceiver 1 of the present embodiment can arrange to realize internal optical fiber F by physical contact (PC) 6and the optics between ROSA 30 is connected, and without carry out any welding between optical fiber.In addition, even in the time breaking down for one in OSA 30 and 32, can only change simply deteriorated OSA, and can not affect all the other OSA.
The anterior sidewall of internal connector 26 is provided with the groove 26e that is formed with two teat 26f and 26g.Groove 26e receives the lock pawl 24b of front tray 24.Internal connector 26 can slide along fore-and-aft direction along lock pawl 24b.In the time being arranged on the teat at lock pawl 24b edge place and engaging with the first teat 26g at darker side place that is arranged on groove 26e,, in the time that the teat of lock pawl 24b is placed in the recess being formed between the darker side-prominent 26g of portion and the end wall of groove 26e, by internal connector 26 being pushed to front tray 24 sides, internal connector 26 is temporarily arranged to away from lock unit 28.As final execution internal optical fiber F 6and when the optics between OSA 30 or 32 is connected, make the teat of locking pawl 24b in groove 26e, slide and engage with the second teat 26f.
Figure 16 A to Figure 16 D has described internal connector 126 according to another embodiment of the present invention and the stop part 127 with internal connector 126 combinations, wherein Figure 16 A is exploded view, Figure 16 B shows the connector assembling, Figure 16 C is the skeleton view of internal connector, and Figure 16 D is the cut-open view that the position relationship between the lock pawl 24b of internal connector, stop part, internal optical fiber and front tray 24 is shown.
Be arranged on internal optical fiber F 6and F 8the lock pin 20b of end with flange 20d.And the continuous coil component 20a of lock pin 20b is placed between the middle part separator 126c and described flange 20d of internal connector 126.Be similar to the internal connector 26 shown in Figure 15 A and Figure 15 B, internal connector 126 is provided with two space 126a and 126b, and space 126a is located between two side pawl 126s and diapire, and space 126b is formed by another housing section 126t.The stop part 127 of being made up of sheet metal comprises beam 127a and a pair of shank 127b all extending from beam 127a, and therefore stop part 127 has U-shaped section.Beam 127a is provided with the opening 127d being run through by lock pin 20b, and the diameter of this opening 127d is less than the diameter of flange 20d.The end of shank 127b is provided with lug 127c, and this lug 127c engages with the hook portion 126q being formed on the middle wall 126c top of internal connector 126.
Internal optical fiber F 6and F 8be placed in internal connector 126, so that at internal optical fiber F 6and F 8be positioned in the situation of front space 126b, lock pin 20b is through the opening 127d of the beam 127a of stop part 127, and stop part 127 is engaged with internal connector 126, so that at coil component 20a near middle part separator 126c in the situation that, lug 127c engages with hook portion 126q.Because the diameter of flange 20d is greater than the diameter of opening 127d, therefore stop part 127 can prevent that lock pin 20b from moving backward.Therefore, can prevent internal optical fiber F 6, F 8split with lock pin 20d and internal connector 126.
The internal connector 126 of the present embodiment is also provided with the groove 126e that is positioned at housing 126t sidepiece place.Groove 126e comprises two recess 126m and 126n and three teat 126f to 126h.The first recess 126m is between the first teat 126f and the 3rd teat 126h, and the second recess 126n is formed on the darker side of the second teat 126g.Two recess 126m and 126n can receive front tray 124 lock pawl 124b end and engage with this end.
As shown in Figure 16 D, internal connector 126 is slided backward and be placed in the first recess 126m so that lock the end of pawl 124b, the end of lock pin 20b moves to the position that lock pin 20b is connected with OSA30 and 32 optics.On the other hand, make internal connector 126 to front slide so that the end of lock pawl 124b is placed in the second recess 126n, lock pin 20b does not interfere lock unit 128 and OSA 30 and 32.
Therefore, before lock unit 128 and OSA 30,32 are placed on to the position separately in housing 10a, internal connector 126 is slided backward so that lock pawl 124b and engage with the first teat 126f on the first recess 126m, thereby lock pin 20b can be placed in to the rotine positioning not engaging with lock unit 128.Then, can be by internal optical fiber F 6and F 8be pulled in the first housing 10a, to optical fiber is placed in to final position.Traction internal optical fiber F 6and F 8optical fiber is fixed, and made internal connector 126 to front slide so that lock pawl 124b engages with the second teat 126g on the second recess 126n, afterwards, can, in the situation that not interfering lock pin 20b and internal connector 126, lock unit 128 and OSA30,32 be assembled in the first housing 10a.
Figure 17 is the skeleton view that the internal connector 226 of the another kind of type obtaining from the internal connector modification shown in Figure 16 B is shown.Modification internal connector 226 shown in Figure 17 is provided with the groove 226e with two recess 226m and 226n, but is only provided with a teat 226f.Other teat 126g occurring in last embodiment and 126h are replaced by the platform portion that these two teats are coupled together.Such internal connector 226 can play the effect identical with last embodiment 126, that is, two recess 226m and 226n determine two positions of lock pin 20b.
As shown in Figure 14 and Figure 18, wherein, Figure 18 A observes from bottom, and Figure 18 B from top view to, lock unit 28 is provided with four the slit 28as corresponding with the quantity of ROSA 30.Each side of each slit 28a has a pair of lock pawl 28b, and is provided with teat 28c on the outside surface of lock pawl 28b.Teat 28c engages with the opening 26d of internal connector 26, so that internal connector 26 coordinates with lock unit 28.The rear side of lock unit 28 arranges seamed 28e.
Figure 19 A is the side view of ROSA 30, and Figure 19 B shows a slit of the lock unit 28 of observing from rear.As shown in Figure 19 A, ROSA 30 has two flange 30a and 30b along optical axis, and between flange 30a and 30b, has neck 30c.Meanwhile, as shown in Figure 19 B, the rear wall 28h of lock unit 28 is provided with horseshoe incision 28g.The diameter L2 of the neck 30c of ROSA30 sets frontal width (frontage) L1 less times greater than otch 28g for.Because lock unit 28 is formed from a resin, therefore can in the time that expanding, the frontal width that makes otch 28g easily ROSA30 be placed in lock unit 28.Once ROSA30 is placed in lock unit 28, just become and be difficult to drop from otch 28g, this can improve the throughput rate of intermediate module.As shown in figure 14, the front flange 30a of ROSA30 is placed in the seam 28e of lock unit 28, and sleeve 30d is placed in a corresponding slit 28a.In Figure 19 A, OSA30 and 32 comprises sleeve assembly 30s and optical device 30e, and as mentioned above, sleeve assembly 30s comprises sleeve 30d, front flange 30a, neck 30c and rear flange 30b.Sleeve assembly 30s can be by internal optical fiber F 6and F 8link together with optical device 30e optics, in addition, optical device 30e is provided with semiconductor optical device, such as the photodiode for ROSA 30 with for the laser diode (LD) of TOSA 32.
Describe according to the lock unit 128 of another embodiment of optical transceiver 1 with reference to Figure 18 B.Except the structure shown in Figure 18 A, the lock unit 128 of the present embodiment also comprises the teat 128k being positioned on sidewall.This teat can prevent that the internal optical fiber passing through from below from departing from.
Figure 20 is along the internal optical fiber F that is placed in internal connector 126 6or F 8optical axis intercept cut-open view.If internal connector 126 and lock unit 128 are combined together, internal optical fiber F 6lock pin 20b insert in the hole of sleeve assembly 30s, and the end of lock pin 20b carries out physical contact with the end of suspension column 30u of the OSA 30 that is placed in lock unit 128.One end of coil component 20a contacts with the middle part separator 126c of internal connector 126, and the other end contacts with flange 20d, and this flange pushes lock pin 20b towards OSA 30.Thereby, even in the limited inner space of optical transceiver 1, also can realize reliably the physical contact between the end of lock pin 20b and the end of suspension column 30u.
The reeded arrangement of another modification tool of internal connector 26 and 126,, the internal connector 26 of the first embodiment is provided with two teat 26f and 26g, and the second embodiment is provided with three teat 126f to 126h, or teat 126f and platform portion that all the other two teat 126g and 126h are coupled together.Another modification of internal connector can arrange a teat in groove 126e.This teat only plays the effect of catching on lock pawl 24b and 124b, to prevent that internal connector 26 and 126 skids off from front tray 24 during assembling optical transceiver 1.In the time that internal connector is connected with lock unit 28, internal connector can depart from front tray 24.In the time being only left the finite space between front tray 24 and lock unit 28, it is effective that the arrangement of above-mentioned internal connector just becomes.
To describe another kind of housing 110 and be arranged on the optical plug at the front middle part place of housing.Figure 21 A illustrates the anterior skeleton view of the first housing 110a according to another embodiment of the present invention, and Figure 21 B is front elevation.As shown in Figure 21 A and Figure 21 B, the front portion of the first housing 110a comprises the central region 111a being separated out by sidewall 111i and rear wall 111j.Rear wall 111j is provided with and includes seat cut S 1with sub-otch S 2paired two incision.Seat cut S 1between pitch and the pitch between the sleeve of SC type optical conenctor equate, and sub-otch S 2pitch than seat cut S 1pitch narrow, and equate with the pitch of LC type optical conenctor.
The Part II R of the first housing 110a 2comprise two kinds of groove G 2s and G 2l.Outer groove G 2distance between S and seat cut S 1pitch roughly equal, and inner groovy G 2distance between L and sub-otch S 2pitch equate.The Part III R of the first housing 110a 3in be also provided with groove G 4s and G 4l, and groove G 4s and G 4l and Part II R 2corresponding recesses G 2s and G 2l is continuous.Thereby, these grooves G 2s to G 4l is arranged on straight line.
Figure 22 A to Figure 22 C shows the optical plug with SC type socket of the modification according to the present invention, and wherein optical plug 114 is assembled in central region 111a.Figure 22 A shows the optical plug 114 of observing from rear, and Figure 22 B shows the optical plug 114 of observing from front, and Figure 22 C is the exploded view of optical plug 114.Be similar to the optical plug 14 shown in Fig. 2, modification optical plug 114 comprises housing 114a, sleeve bracing frame 114b and conducting strip 114c.
Optical plug 114 comprises two cavity 114A and 114B, and cavity 114A and 114B are for receiving the first cylindrical shell 20c and 22c of sleeve assembly.Two cavity 114A are separated by the rear wall 114e contacting with the front surface of flange 20e and 22e with 114B.Rear wall 114e is also provided with two opening 114h, and the first cylindrical shell 20c, 22c are through opening 114h.The surrounding of each opening 114h has stage portion 114k, and flange 20e and the 22e of sleeve assembly are placed in this stage portion.
Conducting strip 114c is attached to rear wall 114e.Conducting strip 114c is made up of conductive material, for example, can be made up of the supatex fabric that conducting electricity.As shown in figure 23, housing 114a and sleeve assembly 20,22 and conducting strip 114c are fitted together and form optical plug 114, optical plug 114 is arranged on the central region 111a of the first housing 110a.
Particularly, the second cylindrical shell 20f of sleeve assembly and 22f pass the rear wall 111j of central region 111a, and are placed on each seat cut S 1on.Optical plug shown in Figure 22 and Figure 23 has the structure of SC type socket.Conducting strip 114c is placed between the rear wall 114e of Socket casing 114a and the rear wall 111j of central region 111a.Cover 12 is threaded with the antetheca 110d of the first housing 110a, and cover 12 is upper by being pressed in rear wall 111j by optical plug 114, thereby conducting strip 114c can be placed between optical plug 114 and rear wall 114j securely.
Can also be provided with and only be fixed on the lug 114f on sidewall 114g in end according to the optical plug 114 of the present embodiment.Lug 114f extends along the vertical direction from the part being fixed.Therefore, the other end of lug 114f can reverse around this part being fixed.On the other hand, on the two side 111i of the central region 111a of the first housing 110a, be provided with recess 111k.In the time optical plug 114 being placed on central region 111a, the front surface of lug 114f is resisted against on the rear surface of recess 111k, recess 111k is upper by being pressed in rear wall 111j backward by optical plug 114, and temporarily fixed optics socket 114 until the most at last optical plug 114 be placed between cover 12 and rear wall 111j.
Below by the relation of describing in more detail between cover 12 and optical plug 114, cover 12 is as shown in figure 24 provided with two couples of hole 12b and 12c and optical plug 114 is exposed to outer port one 2a, wherein, screw rod lock 16, through hole 12c, is fixed to cover 12 on the screw of the first housing 110a through hole 12b.The both sides of port one 2a be provided with extend back press lug 12d.Pressing lug 12d is resisted against on the antetheca 114j of optical plug 114 against optical plug 114.Cover 12 by depressing, optical plug 114 is pressed backward, and the rear surface of the flange of sleeve assembly 20e and 22e contacts with rear wall 111j, conducting strip 114c is placed between above-mentioned flange and rear wall 111j.
As shown in Figure 22 C, conducting strip 114c is provided with the hole 114r being passed by the first cylindrical shell 20c and the 22c of sleeve assembly.In the present embodiment, the diameter of hole 114r is slightly less than the diameter of the first cylindrical shell 20c and 22c, make hole 114r size expand time by the first cylindrical shell 20c and 22c patchhole 114r and opening 114h, thereby can prevent from producing gap between the first cylindrical shell 20c and 22c and hole 114r, and then closure casing 110 inside reliably.
In addition, the rear wall 114e of Socket casing 114a is provided with the multiple teats around stage portion 114k, thereby can make conducting strip 114c contact with rear wall 111j reliably.
Figure 25 shows another embodiment according to optical plug 214 of the present invention.Optical transceiver 1 of the present invention can be provided with the optical plug 214 with LC type structure, to replace the SC type socket shown in Figure 22 a to Figure 23.Pitch between two sleeves of LC type socket is narrower than the pitch between two sleeves of SC type socket.Therefore, the optical transceiver 1 of the present embodiment is provided with two incision on the rear wall 111j of the first housing 110a, that is, and and seat cut S 1with sub-otch S 2, wherein seat cut S 1be used for SC type optical plug and sub-otch S 2for LC type socket.In addition, as shown in Figure 21 A and Figure 21 B, Part II R 2be provided with two kinds of guide recess G 2s and G 2l.Two groove G 2s prepares the internal optical fiber F for drawing from the sleeve assembly of SC type socket 114 2and F 4, and groove G 2l prepares the internal optical fiber F for drawing from LC type socket 214 2and F 4.Thereby, go for two kinds of optical plugs according to the optical transceiver 1 of the present embodiment, i.e. SC type socket and LC type socket.
Figure 26 A and Figure 26 B show another embodiment applicable to the optical plug 314 of optical transceiver 1.Socket casing 314a shown in Figure 26 A and Figure 26 B has the feature that can be different from previous embodiment, lug 314f and teat 314n.
Lug 314f in the present embodiment has crushable rib, in the time that lug 314 is positioned in the recess 111k of the first housing 110a described in rib collapsible.Particularly, lug 314f is provided with the rib that extends vertically and have triangular cross-section.Width from the end of rib to the rear surface of lug 314f is less times greater than the longitudinal size of recess 111k, and therefore, in the time that lug 314f is placed in recess 111k, the end of rib can be crushed, thereby can make optical plug 314 by being pressed on rear wall 111j.
Socket casing 314a is not only peripheral at opening 314h and stage portion 314k but also be provided with multiple teat 314m and 314n on the upper surface of optical plug 314a and lower surface.In the situation that optical plug 314 is placed between the first housing 110a and the second housing 110b by the first housing 110a in the time that the second housing 110b is together with other assembling parts, the end of each teat 314n can be crushed, thereby optical plug 314 can be remained between housing 110a and 110b reliably.In addition, on the antetheca 110d that cover 12 is placed on to the first housing 110a, when optical plug 314 is pressed against on rear wall 111j, the end of teat 314m can be crushed, thereby optical plug 314 can be fixed in central region 111a reliably.
In the embodiment of above-mentioned optical plug, lug is all formed on the position recording from the front surface of Socket casing, and this position is the common residing position of two lugs on each sidewall.But the lug on each sidewall can be arranged obliquely, and the recess 111k corresponding with lug also can be formed obliquely on each sidewall 111i.Being in tilted layout of lug 114f, 214f and 314f and recess 111k can prevent optical plug 114,214 and 314 to put upside down setting.In addition, above-mentioned conducting strip 14 and 114 is with sheet metal for exemplifying, but conducting strip can be the double-deck pattern of rubber and sheet metal.In this embodiment, sheet metal is placed between optical plug 114,214 and 314 and rear wall 111j, so that sheet metal contacts with rear wall 111j.
The mechanism of screw rod lock 16 is described below.As mentioned above, cover 12 is fixed to the first housing 10a with screw, while making on the rear wall 11j that optical plug 14 is pressed against to the first housing 10a, the cavity of optical plug 14 exposes from the optical port 12a of cover 12.
Figure 27 shows the screw rod lock 16 according to the embodiment of the present invention.Screw rod lock 16 comprises the 16c of bar portion, and one end of the 16c of bar portion has knob 16a and the other end and has and the screw thread 16b of the engage threaded of main connector 3a.Knob 16a is set for optical transceiver 1 is carried out to manual operation.The 16c of bar portion is also provided with the ring groove 16e and the flange 16f that are positioned at knob 16a side.Volute spring is placed between ring groove 16e and flange 16f.The screw rod lock 16 side space 10g that are placed on the rib 10c that is formed on the first housing 10a.
Figure 28 illustrates the front portion of the first housing 10a enlargedly.Side channel 10g comprises the space 11p that width is larger than the width of the remainder of groove 10g.Space 11p receive between ring groove 16e and flange 16f for settling helical spring part.Space 11p is provided with the 11x of front step portion and the 11y of backward step portion.The 11x of front step portion faces mutually with the front surface of flange 16e, and then stage portion 11y abuts against on volute spring.Volute spring is lead-screw lock 16 forward, and correspondingly, at this effect lower knob, 16a is pushed forward, thereby removes engaging of screw thread 16b and threaded hole on main connector, thereby optical transceiver 1 is removed from main system.
In a preferred embodiment, screw rod lock 16 can be provided with packing ring in flange 16f side, so that making 16 rotations of screw rod lock prevent volute spring rotation when with the engage threaded of main connector 3a.Particularly, the flat shape that space 11p is formed as rectangle and packing ring can be rectangle, thereby prevents that packing ring from rotating in the 11p of space.
Refer again to Figure 28, be provided with the antetheca 10d with transverse concave groove 11r on the front surface of the first housing 10a, transverse concave groove 11r can be with reference to figure 21B.Groove 11r extends near side knob 16a from the middle part of optical plug 14 to be installed.Bolt 13 is placed in groove 11r.Figure 29 shows the bolt 13 of being made up of sheet metal, and bolt 13 comprises the 13a of band portion, crook 13b and pushing part 13c.Pushing part 13c bends backward, and crook 13b extends forward steppedly.
Bolt 13 can also comprise the elastic 13d that is positioned at the center with the 13a of portion.The upper downward-extension of elastic 13d, and produce transverse pressure on bolt 13, bolt 13 is pressed to optical plug 14 by elastic 13d.On the front surface of the antetheca 10d of the first housing 10a, be also provided with another groove 11s of downward-extension, to receive the elastic 13d of bolt 13.Elastic 13d can be bending in groove 11s.
On the other hand, on the sidewall of the optical plug shown in Figure 22 A to Figure 22 C, Figure 26 A and Figure 26 B, can be provided with otch 114p and 314p, bolt 13 is through otch 114p and 314p.Make bolt 13 with the 13a of portion during through the otch of optical plug, the pushing part 13c of bolt 13 stretches into the cavity of optical plug.Pushing part 13c is bending backward in cavity.
Figure 30 A is optical transceiver 1 while departing from main system 2, the anterior cut-open view of the optical transceiver 1 when screw rod lock 16 separates with threaded hole.Figure 30 B is the front elevation of optical transceiver 1, and in figure, cover 12 is removed to illustrate the antetheca 10d of optical transceiver 1.As mentioned above, bolt 13 is pushed to optical plug 14 under the elastic force effect of elastic 13d.In the time that external optical connector 100 departs from cavity 14B,, in the time that cavity 14B does not receive aerial lug 100, the pushing part 13c of bolt 13 stretches in cavity 14B.
The in the situation that of above-mentioned arrangement, in the time that screw rod lock 16 departs from threaded hole, because the end of crook 13b is left in cavity 14B near screw rod lock 16 and pushing part 13c, therefore can prevent that aerial lug 100 from inserting in cavity 14B.On the other hand, in the time of screw rod lock 16 and engage threaded, the end of crook 13b is aimed at the ring groove 16e of screw rod lock 16.In the time that aerial lug 100 is inserted to cavity 14B, aerial lug 100 pushes the pushing part 13c of bolt 13, and the end of the crook 13b of bolt 13 can be retracted in ring groove 16e.In addition, in the time that the end of crook 13b is retracted into ring groove 16e, move forward because crook 13b stops screw rod lock 16, therefore screw rod lock 16 can not separate with threaded hole.
Therefore, in the time that aerial lug 100 coordinates with optical plug 14, while optical transceiver 1 being engaged by screw rod lock 16 and the threaded hole of main system 2 are threaded with main system 2, the optical transceiver 1 of the present embodiment can prevent following two kinds of situations: a kind of situation is in the time that optical transceiver 1 and main system 2 depart from, and aerial lug can not be inserted in optical plug 14; Another situation is in the time that aerial lug 100 engages with optical plug 14, optical transceiver 1 can not be taken out from main system 2.
Elastic 13d plays the effect of sheet spring, as shown in Figure 30 D, aerial lug 100 is inserted and in optical plug 14, makes elastic 13d bending, and in the time that cavity 14B is idle, elastic 13d promotes bolt 13 backward.Although only show bolt 13 in figure and have the situation of bending pushing part 13c, pushing part 13c also can have arcuate shape.
the second embodiment
Describe assembling in detail according to the step of the optical transceiver 1 of second embodiment of the invention below.Step described below is based on following assumed conditions, and optical transceiver 1 is provided with housing 100, front tray 124, rear pallet 136 and the internal connector 126 of the second embodiment.
The first step, is arranged on Part IV R by rear pallet 136 4upper, optical multiplexer 20 and optical demultiplexer 22 are arranged on to position separately.Next step, lay internal optical fiber F 2to F 8.
As shown in Figure 31 A, in sender side, by the internal optical fiber F extending from optical multiplexer 20 6be positioned over and be formed on part R 2and R 3in groove G 2to G 4in, make internal optical fiber F 6extend to Part IV R 4.Guide optical fiber F along rear pallet 136 6turn to receiver-side, and towards a side-lining of receiver-side, so that optical fiber F 6arrive Part I R 1.The 136c of eaves portion being arranged on rear pallet 136 can prevent optical fiber F 6depart from.Can be according to internal optical fiber F 6unnecessary length optionally use the multiple eaves 136c of portion on rear pallet 136.
As shown in Figure 31 B, at receiver-side, by the internal optical fiber F extending from optical demultiplexer 22 8be positioned over and be formed on part R 2and R 3in groove G 2and G 4in, make internal optical fiber F 8extend to Part IV R 4.Guide optical fiber F along rear pallet 136 8turn to sender side, and towards a side-lining of sender side, so that optical fiber F 8arrive Part I R 1.The 136c of eaves portion being arranged on rear pallet 136 can prevent optical fiber F 8depart from.Can be according to internal optical fiber F 8unnecessary length optionally use the multiple eaves 136c of portion on rear pallet 136.
Internal optical fiber F 6and F 8can before laying, be installed together with lock pin 20b, spring coil 20a and flange 20d.
Next step, as shown in Figure 31 C, will be from optical multiplexer 20 at groove G 2to G 6the internal optical fiber F of interior extension 2draw to Part IV R 4.Guide optical fiber F along pallet 136 towards receiver-side 2, then by optical fiber F 2be placed on groove G 2s or G 2among L in a groove corresponding with the type that is arranged on the optical plug 14 in central region 111a.The 136c of eaves portion on rear pallet 136 can guide internal optical fiber F 2and prevent optical fiber F 2depart from.Also can be according to optical fiber F 2length optionally use multiple eaves 136c of portion.
Finally, as shown in Figure 31 D, the internal optical fiber F drawing from optical demultiplexer 22 4at Part II R 2with Part III R 3groove G 2to G 6in be directed to Part IV R 4front end.At Part IV R 4, make internal optical fiber F 4along rear pallet 136 towards sender side bending, and at the groove G corresponding with the type of optical plug 14 2s and G 2among L, a groove is interior by internal optical fiber F 4guide to central region 111a.The 136c of eaves portion also can prevent internal optical fiber F 4depart from.Can be according to optical fiber F 4length optionally use multiple eaves 136c of portion.
Internal optical fiber F can laid 2to F 4before by Socket casing 114a, sleeve support 114b and conducting strip 114c composition optical plug 114.Laying internal optical fiber F 2to F 8after, sleeve 20c is inserted to the opening 114h on the rear wall 114e of optical plug 114 via opening 114r on conducting strip 114c.The optical plug 114 fitting together with sleeve 20c and 22c is arranged on to the central region 111a of the first housing 110a.In this step, the lug 114f being arranged on optical plug 114 sidewalls is placed in recess 111k.
Then, front tray 124 is fixed on to Part II R 2on.The internal optical fiber F that makes to be laid in the side of receiver-side 6draw the top board 124s below to front tray 124, below the front eaves 124x of portion, draw to sender side, and finally guide in each slit 124a of front tray 124.Every optical fiber F 6guided by guiding wall 124t and 124u, antetheca 124v, the front eaves 124x of portion and the slit eaves 124d of portion.And by another internal optical fiber F of a side of the sender side that is laid in 8be drawn to top board 124s below, below the front eaves 124x of portion, draw to receiver-side, and finally guide to each slit 124a.Every optical fiber F 8guided by guiding wall 124t and 124u, antetheca 124v, the front eaves 124x of portion and each slit eaves 124d of portion.Thereby, shown in figure 32, internal optical fiber F 6to F 8can in unswerving situation, lay.
Next step, fit together internal connector 126 and front tray 124.Particularly, the lock pawl 124b of front tray 124 is inserted to the groove 126e of internal connector 126, and the end of lock pin 20b is temporarily placed in to internal optical fiber F 6the position that can be connected with OSA30 and 32 optics.Figure 33 B shows link position.Then, make internal connector 126 to front slide so that the end of lock pawl 124b is placed in the second recess 126n, thereby lock pin 20b can not interfere the installation of OSA30 and 32.Figure 33 A shows disengaging configuration.
Then, as shown in figure 34, lock unit 128 is placed in to rotine positioning, and OSA30 and 32 is placed in to lock unit 128.Before mounting circuit boards 18, OSA30 is connected with corresponding FPC18d with 32.Circuit board 118 is arranged on to the first housing 110a upper, and the rib 19e of plug-board 19 is inserted in the groove 10v of the first housing 10a, thereby optical element and electrical equipment are arranged on the first housing 10a.Before mounting circuit boards 18, liner 34b can be placed in groove 10h, and crown cap 35 can be placed in to groove 10v.
Internal connector 126 is slided backward so that lock in the first recess 126m of groove 126e that the end of pawl 124b is placed in internal connector 126, and the teat 128c of lock unit 128 is engaged with the opening 126d of internal connector 126, thereby can make the suspension column 30u in end and the OSA 30 and 32 of lock pin 20b carry out physical contact.
Finally, in the case of optical plug 14 being placed between cover 12 and the rear wall 111j of central region 111a, cover 12 is fixed to the first housing 110a.Another liner 34a is placed in the groove 111m of the second housing 110b, and another crown cap 35 is placed in groove 11v, and the second housing 110b is fixed to the first housing 110a, thereby completed optical transceiver 1.

Claims (13)

1. be arranged on the pluggable optical transceiver in main system, comprise:
Optical plug, it is for receiving aerial lug;
Screw rod lock, it is for tightening together described optical transceiver with described main system; And
Housing, it is for described optical plug is installed,
Wherein, in the time that described optical transceiver and described main system depart from, prevent that described optical plug from receiving described aerial lug.
2. pluggable optical transceiver according to claim 1, also comprises:
By the bolt of described optical plug and described screw rod lock mechanical engagement,
Wherein, one end of described bolt is stretched in described optical plug, while separation, prevents that described optical plug from receiving described aerial lug with the described screw rod of box lunch lock with described main system.
3. pluggable optical transceiver according to claim 2, wherein,
Described one end of described bolt has arcuate shape.
4. pluggable optical transceiver according to claim 2, wherein,
Described screw rod lock is provided with groove, thereby described in the time that described optical plug is received described aerial lug, groove is received the other end of described bolt.
5. pluggable optical transceiver according to claim 2, wherein,
The other end of the described bolt of described screw rod lock pushing, so that described one end is stretched in described optical plug.
6. pluggable optical transceiver according to claim 2, wherein,
Described bolt is provided with elastic, and described housing is provided with the groove for placing described elastic, and
Under the resilient force that described bolt produces in described elastic and described groove, set back and put.
7. pluggable optical transceiver according to claim 2, wherein,
Described optical plug is provided with the otch being passed by described one end of described bolt.
8. pluggable optical transceiver according to claim 1, wherein,
In the time that described optical plug is received described aerial lug, prevent that described screw rod lock from separating with described main system.
9. pluggable optical transceiver according to claim 8, also comprises:
By the bolt of described optical plug and described screw rod lock mechanical engagement,
The described external optical connector of being received by described optical plug pushes one end of described bolt, and described bolt is stretched into be arranged in groove that described screw rod locks, to prevent that described screw rod lock from sliding.
10. pluggable optical transceiver according to claim 9, wherein,
Described one end of described bolt has arcuate shape.
11. pluggable optical transceivers according to claim 9, wherein,
Described bolt is provided with elastic, and described housing is provided with and receives the groove of described elastic, and
Under the elastic force effect of the described elastic of described one end of described bolt in described groove, automatically stretch in described optical plug.
12. pluggable optical transceivers according to claim 9, wherein,
Described optical plug is provided with the otch being passed by described one end of described bolt.
13. pluggable optical transceivers according to claim 1, wherein,
Described screw rod lock is provided with flange and volute spring, and described housing is provided with the groove for placing described screw rod lock, and
In the time that described screw rod lock separates with described main system, described screw rod is locked under the described helical spring effect that is placed in described groove and sets back and put.
CN201210313551.4A 2009-10-29 2010-10-29 Pluggable optical transceiver and manufacturing method therefor Active CN102830470B (en)

Applications Claiming Priority (16)

Application Number Priority Date Filing Date Title
JP2009248592 2009-10-29
JP2009-248592 2009-10-29
US26110509P 2009-11-13 2009-11-13
US61/261,105 2009-11-13
US31480110P 2010-03-17 2010-03-17
US61/314,801 2010-03-17
JP2010-083610 2010-03-31
JP2010083610A JP5445278B2 (en) 2009-10-29 2010-03-31 Optical communication module and manufacturing method thereof
JP2010-105560 2010-04-30
JP2010-105557 2010-04-30
JP2010105557A JP5471787B2 (en) 2010-04-30 2010-04-30 Optical transceiver
JP2010105560A JP5471788B2 (en) 2010-04-30 2010-04-30 Optical transceiver
JP2010114311A JP5471813B2 (en) 2010-05-18 2010-05-18 Optical transceiver
JP2010-114311 2010-05-18
JP2010-213701 2010-09-24
JP2010213701A JP5736703B2 (en) 2010-09-24 2010-09-24 Optical connector assembly

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CN102798947A (en) 2012-11-28
CN102830472B (en) 2014-06-18
CN102830471A (en) 2012-12-19
CN104062721A (en) 2014-09-24
CN102687049A (en) 2012-09-19
CN102798947B (en) 2015-06-24
CN102830471B (en) 2015-03-25
CN102830473B (en) 2014-12-24
CN102830470A (en) 2012-12-19
CN102830472A (en) 2012-12-19
CN102687049B (en) 2015-08-12
CN102830473A (en) 2012-12-19

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