CN103913805B - Metal Strain Relief Device For Use In Optical Communications System, Optical Fiber Cable That Employs The Strain Relief Device, And Method - Google Patents

Abstract

A strain relief device and a method are provided for use with an optical fiber cable of an optical communications system. The strain relief device comprises a plurality of metal wires, or rods, grouped into a bundle of parallel metal wires, and a clamping mechanism for clamping first and second ends of the metal wires to the optical fiber cable. The clamped bundle of metal wires forms a spring having a spring constant that provides it with a desired stiffness and a desired flexibility.

Description

Device is released for the metal strain used in optical communication system, answered using described Become the fiber optic cables and method for releasing device

CROSS REFERENCE TO RELATED is referred to

Subject application be file an application on July 9th, 2012, entitled " A Z-PLUGGABLE OPTICAL COMMUNICATIONS MODULE, AN OPTICAL COMMUNICATIONS SYSTEM, AND A METHOD (Z-pluggable light Learn communication module, optical communication system and method) " and the part of the application case of serial number 13/543,930 continue case, its is complete Text is incorporated herein by reference.

Technical field

The present invention relates to optical communication system.More particularly, the present invention relates to a kind of metal strain releases device and Plant for the method used in optical communication module.

Background technology

Parallel optical communication module is the module with multiple transmission (TX) channel, multiple receptions (RX) channel or both. Parallel optical transceiver module is that have multiple TX channels and multiple RX in the TX parts and RX parts of transceiver module respectively The optical communication module of channel.TX parts are in modulated light comprising being used for via multiple optical waveguides (it typically is optical fiber) transmission Learn the component of the data of signal form.TX parts include a laser driver circuit and multiple laser diodes.Laser Driven Device circuit is by electric signal output to laser diode being modulated to it.When laser diode is modulated, its output has Corresponding to logic 1 and the optical signalling of the power level of logical zero.The optical system of transceiver module will be produced by laser diode Optical signalling focus in the end of corresponding Transmission Fibers, the Transmission Fibers be immobilizated in transceiver module coordinate adapter It is interior.

Generally, TX parts also include multiple monitoring photodiodes, and the plurality of monitoring photodiode monitoring mutually stress The output power levels of optical diode and generation feed back to the corresponding electrical feedback signal of Transceiver Controller.At Transceiver Controller Manage feedback signal to obtain the corresponding mean output power level of respective laser diodes.Transceiver Controller is defeated by control signal Go out to laser driver circuit, the control signal causes laser driver circuit adjustment modulation and/or biases output and arrives corresponding The current signal of laser diode is so that the mean output power level of laser diode maintains the level of relative constancy.

RX parts include multiple reception photodiodes, and the plurality of reception photodiode is received from being immobilizated in adapter In correspondingly received optical fiber end output incoming optical signalling.The optical system of transceiver module will be defeated from the end of reception optical fiber The light for going out is focused on correspondingly received photodiode.Receive photodiode and incoming optical signalling is converted into into electrical analogue letter Number.Power detection circuit (such as transimpedance amplifier (TIA)) receives the signal of telecommunication that produced by reception photodiode and exports right The amplified signal of telecommunication answered, its Jing in RX parts processes to recover data.

Exist in optical communications industry to simultaneous transmission and the parallel optical communication of ever-increasing data volume can be received The ever-increasing needs of system.To realize this, it is known that by multiple parallel optical transceiver module groups of type described above Close to produce the parallel optical communication system with the bandwidth higher than individual parallel optical transceiver module.For this purpose, respectively Planting parallel optical transceiver module is used in such system.

Fig. 1 graphic extensions are installed on the electric connector 2 on printed circuit board (PCB) (PCB) 3 and (are referred to as Meg-Array in the industry Adapter) perspective view.Meg-array adapters 2 include jack 4, and there is the conductive ball contact in its lower surface (not open up for it Showing) conductive blade on array and its upper face is to 5 arrays.Fig. 2 is illustrated in parallel optical transceiver module 6 and (is expert at It is referred to as Snap-12 parallel optical transceiver modules in industry) afterwards demonstrated in Figure 1 Meg-array connection has been inserted in jack 4 The perspective view of device 2.Snap-12 modules 6 have electric contact (displaying) array on the surface of its underpart, when by module 6 along X, Y, the Y-direction of Z Cartesian coordinate system when pressing down in jack 4 electric contact it is corresponding to Meg-Array adapters 2 Conductive vanes are contacted to 5.

Holder 7 is placed in be formed in the front panel 8 of box (displaying) to be used to receive module for optical connector (displaying) Opening in.By by module for optical connector via the opening being formed in front panel 8 along Z-direction be inserted in holder 7 with So that the corresponding mating feature on the mating feature (displaying) engagement module for optical connector (displaying) on the inside of holder 7 (displaying), module for optical connector (displaying) coordinates with holder 7.Wherein be provided with parallel optical because front panel 8 is constituted The fact that the edge of the box of transceiver module, the mounting arrangements of this type are referred to as in the industry edge installing type arrangement.Optics connects Connect device module mechanically and be optically coupled to the fibre ribbon with multiple (for example, 4,8,12,24 or 48) optical fiber One end of shape cable (displaying).

By the way that multiple optical transceiver modules 6 are mounted side by side on motherboard PCB3, it is capable of achieving that there is very high bandwidth Optical communication system.However, haveing the shortcomings that to be associated with the edge installing type arrangement of type demonstrated in Figure 2.One this To be holder 7 and respective optical connector modules (displaying) relatively wide along X-dimension and therefore takes big on front panel 8 for shortcoming Quantity space.It is due to the limited space on front panel 8 therefore also limited by the ability for increasing the size of array to increase bandwidth.

The further drawback being associated with edge installing type arrangement demonstrated in Figure 2 is parallel optical transceiver module 6 Not Z-pluggable, i.e. it can not be inserted in front panel 8 and take out from front panel 8.But, fasten at the top of box Before in place, by module 6 being positioned over into the top of corresponding jack 4 and module 6 being inserted into into its phase along downward Y-direction applying power In answering Meg-Array jacks 4.Then the top of box is fastened in place.This causes the task phase for installing module 6 and the module 6 that swaps out To the difficult and consuming time.

The content of the invention

The present invention relates to a kind of strain solutions for being used together with the fiber optic cables of optical communication system remove device, Yi Zhongpei The strain solutions are had except the fiber optic cables and a kind of method of device.The strain solutions are included except device：Many wires or rod, It is grouped into the parallel metal wire of a bundle；And clamping device, it is used to for first and second end of the metal wire to be clamped to light Fiber-optic cable.The bundle Jing clampings metal wire forms spring, and the spring has and want rigidity for its offer and want flexible bullet Spring constant.

Strain solutions of the fiber optic cables comprising the end part for being fastened to the fiber optic cables are except device and are fastened to described The baffle plate of the end part of fiber optic cables.The strain solutions are included except device：Many wires or rod, it is grouped into a bundle simultaneously Row metal line；And clamping device, it is used to for first and second end of the metal wire to be clamped to the fiber optic cables.

Methods described is included：There is provided for the fiber optic cables used in optical communication system；Strain solutions are provided and remove device；With And by clamping device by the end part of strain solutions optical fiber except device is fastened to.The strain solutions are included except device： Many wires or rod, it is grouped into the parallel metal wire of a bundle；And the clamping device.

These and other feature and advantage of the present invention are will become apparent from from following explanation, schema and claims.

Description of the drawings

Fig. 1 graphic extensions are installed on the perspective view of the Meg-Array adapters on PCB.

Fig. 2 is illustrated in Snap-12 parallel optical transceiver modules and has been inserted into Meg-Array companies demonstrated in Figure 1 The perspective view of the Meg-Array adapters after connecing in the jack of device.

Front perspective view of Fig. 3 graphic extensions according to the optical communication system of illustrative embodiment.

The perspective view of one of Fig. 4 graphic extensions Z-pluggable OCM demonstrated in Figure 3, the side of wherein housing is removed To appear the PCB that parallel OCM and parallel OCM are mounted thereon.

The front perspective view of Fig. 5 graphic extensions optical communication system demonstrated in Figure 3, wherein a part for box and front panel It is removed that to appear for will move along downwards and upwards, Y-direction gives the actuator mechanism of Z-pluggable OCM.

Fig. 6 A to 6E graphic extensions adopt spring loaded actuator mechanism to give Z along upwardly or downwardly Y-direction by motion The perspective view of the optical communication system of pluggable OCM.

Another embodiment of Fig. 7 A to 7D graphic extension optical communication systems, it is configured to receive Z-pluggable OCM and bag Include for by motion, along downwards and upwards, Y-direction to give the actuator mechanism of Z-pluggable OCM.

One of groove shown in Fig. 8 graphic extension Fig. 7 A to 7D, it is in that its decomposed form is described recessed to show The individual elements of groove.

The front perspective view of Fig. 9 A and 9B difference graphic extension groove demonstrated in Figure 8 (being in its assembled form) and it is rear thoroughly View.

The front perspective view and rear view of Figure 10 A and 10B difference graphic extension heat spreader structures demonstrated in Figure 8.

The perspective view of the difference graphic extensions of Figure 11 and 12 cam demonstrated in Figure 8 and heart axle.

Parallel OCM of Figure 13 A to 13D graphic extensions in it be placed in one of groove for being shown in 7A to 7D passes through The actuator mechanism shown in Fig. 8 to 12 moves to the front perspective view of groove when it dips from its raised position.

Figure 14 graphic extensions are connected to the strain solutions of Z-pluggable OCM shown in Fig. 6 A to 6E except device and cable Perspective view.

The strain solutions shown in Figure 15 graphic extension Figure 14 are except a part for one of one of device and cable Perspective view.

Except the cross-sectional view of device and cable, it has and is fastened to institute the strain solutions shown in Figure 16 graphic extension Figure 15 State one end of cable and be fastened to the strain solutions except the baffle plate of one end of device.

Specific embodiment

According to the present invention, there is provided a kind of strain solutions for used in optical communication system remove device.For illustrative mesh , the Z-pluggable optical communication module (OCM) that can be advantageously used therewith except device with reference to strain solutions is described into strain Release device and method.However, strain solutions are not limited to be used together with any certain types of optical communication module except device.

Z-pluggable OCM contains multiple parallel OCM (POCM) and is configured and is removably inserted into and is formed at optics In opening in the front panel of communication system.When Z-pluggable OCM is inserted into the opening being formed in front panel along positive Z-direction When middle, actuator mechanism will move and give Z-pluggable OCM to cause Z-pluggable OCM to be installed on motherboard PCB's along downward Y-direction On upper face.To take out Z-pluggable OCM, actuator mechanism will move give Z-pluggable OCM along Y-direction upwards with cause by It is dismantled from motherboard PCB.Once from motherboard PCB dismounting, then user can by along reverse Z-direction (that is, along normal direction in front panel And away from the direction of front panel) Z-pluggable OCM applying power is removed Z-pluggable OCM from system.

Z-pluggable OCM relatively long multiple parallel OCM to adapt to accommodated in it on Z-dimension, it is in Z-pluggable OCM Inside along Z-direction contact.However, Z-pluggable OCM opposite, narrow on X-dimension.By making Z-pluggable OCM phase on Z-dimension To length, can be in the inside of module along the relatively large number POCM of Z-direction series winding, this allows the X-dimension of holding system relatively small.It is logical The holding module opposite, narrow on X-dimension is crossed, greater number Z-pluggable OCM can be installed in front panel to increase edge peace Dress density.The increase of the number of the POCM that can be contacted along Z-direction in each Z-pluggable OCM and increased edge packing density With reference to allowing for very high total bandwidth.In addition, the Z-pluggable of module allows easily to be installed and removed to provide Many other advantages, such as (for example) the easily ability of one of replacement module in the case of unit failure.By In the edge packing density of the increase of Z-pluggable OCM, the strain solutions for needing the present invention remove device, and following article will be arrived with reference to Figure 14 16 describe in detail.

Fig. 3 graphic extensions are not adopted but can adopt the strain solutions of the present invention except the front perspective of the optical communication system 10 of device Figure.The box or housing 11 of optical communication system 10 is used to receive before corresponding Z-pluggable OCM20 with opening 13 is formed with Panel 12.As described in more detail below, each of Z-pluggable OCM20 has metal shell 21 and multiple POCM (not Show), the plurality of POCM is installed in housing 21.Each of Z-pluggable OCM20 is with the electromagnetism for being attached to its one end Interference (EMI) screening arrangement 22, it is attached to one end of one end of fiber ribbons 23 and metal shell 21.Following article will more Describe in detail, EMI shield 22 performs EMI function of shielding.

The side Jing of the perspective view of one of Fig. 4 graphic extensions Z-pluggable OCM20 demonstrated in Figure 3, wherein housing 21 Remove to appear the PCB40 that POCM30 and POCM30 are mounted thereon.According to this illustrative embodiment, each is with six biographies Four POCM30 of defeated channel and six reception channels are installed on PCB40 and are electrically interconnected with PCB40.Therefore, implemented according to this Example, each ribbon cable 23 has 24 Transmission Fibers and 24 reception optical fibers.However, the present invention can in every Z The number aspect of the POCM30 accommodated in plug OCM20 or the transmission in every POCM30 is provided in and/or reception channel Number aspect it is unrestricted.It is also unrestricted in terms of the number of optical fiber of the present invention accommodated in ribbon cable 23.

Referring again to Fig. 3, although Z-pluggable OCM20 is not limited to any specific X, Y or Z-dimension (according to illustrative reality Apply example), but each Z-pluggable OCM20 has about 0.5 inch of width on X-dimension, its by showing in Fig. 1 and 2 and About half of the width of row optical communication module 6.Even if under the width that here greatly reduces, each Z-pluggable OCM30 provide with The as many channel of about twice of parallel optical communication module 6.Therefore, configuration is installed and is had than Fig. 2 in edge demonstrated in Figure 3 The front panel packing density of about four times of the front panel packing density of middle shown configuration.

Referring again to Fig. 4, due to the high packing density of Z-pluggable OCM20 in front panel 12, and because every Z can be inserted The big channel number that OCM20 has is pulled out, the relatively great amount of heat that dissipates will be needed in system 10.For this reason, institute's exhibition in Fig. 4 Z-pluggable OCM20 of the embodiment shown has been designed with for IC (displaying) and for the independent of laser diode (displaying) Heat spreader structures.This feature allows IC and laser diode to operate at different temperatures.One of heat spreader structures 50 are by gold Category housing 21 is thermally coupled to the heat pad (displaying) for having an IC installed above, and the other of heat spreader structures 60 are thermally coupled to Face is provided with the metal lead wire frame (displaying) of laser diode.Heat spreader structures 50 and 60 spread respectively and dissipate by IC and The heat produced by laser diode.

In addition to the thermal diffusion and dissipation function that are performed by independent heat spreader structures 50 and 60, system 10 preferably will be including cold But system (displaying), the cooling system will make air blow over the metal shell 21 of Z-pluggable OCM20 to promote cooling.Along Z Direction blows over the air of heat spreader structures 50 and will cool down the IC of POCM30, and the air for blowing over heat spreader structures 60 will be cooled down The laser diode of POCM30.

With reference to Fig. 4, the PCB40 of Z-pluggable OCM20 has be electrically connected to corresponding parallel OCM30 to be placed in its underpart table Conductive contact (displaying) array on face.When Z-pluggable OCM20 edge is installed on (Fig. 3) in front panel 12, these are conductive Contact array connects to the corresponding conductive contact array on the upper face of the motherboard PCB (displaying) of the system that is placed in 10 (Fig. 3) Touch, following article will be described in more detail with reference to Fig. 5 to 6D.

Housing 21 is installed in terms of the type of POCM of the present invention in for Z-pluggable OCM20 or configuration or in POCM Interior mode aspect is unrestricted.Other examples for being adapted to the POCM of this purpose are disclosed in U.S. Patent No. 7,331,720 and 8, In 036, No. 500, it is received the assignee for yielding subject application and is incorporated by reference in its entirety herein.It is various other known POCM also is adapted for being used in conjunction with, such as those skilled in the art in view of explanation presented herein and will Solution.

The front perspective view of Fig. 5 graphic extensions optical communication system 10 demonstrated in Figure 3, wherein metal system box or housing 11 and a part of removed actuator mechanism 70 to appear the inside for being placed in system box 11 of metal front panel 12.Actuator The purpose of mechanism 70 is that along downwards and upwards, Y-direction gives Z-pluggable OCM20 to make OCM20 respectively and be placed in by motion Conductive contact array 71 on the upper face 72a of motherboard PCB72 is engaged and OCM20 is disengaged from conductive contact array 71. According to this embodiment, actuator mechanism 70 is screw rotational actuator, and it is activated when Ai Kemu (Acme) screw 73 is along a side Z-pluggable OCM20 is reduced on the upper face 72a of motherboard PCB72 and when Ai Kemu screws 73 are along phase negative side when rotating Z-pluggable OCM20 is set to be lifted off the cam mechanism of the upper face 72a of motherboard PCB72 when rotating.

Actuator mechanism 70 includes guiding system 80, and the guiding system 80 is with along the opposite side of guiding system 80 Top edge be integrally formed in cam-follower therein 81 Jing elongation general rectangular structure.Only guide the one of system 80 Side 80a is visible in Figure 5, but opposite side is identical with side 80a in structure.Guiding system 80 has along its underpart surface 80b Length be integrally formed in suspension rod therein 82.The housing 21 of Z-pluggable OCM20 has the length along its upper face 21a The track 24 that degree is formed.Track 24 and suspension rod 82 be sized and shaped with Z-pluggable OCM20 track 24 and suspension rod 82 that It is engaged with each other when inserting through front panel 12 along Z-direction in the case of this alignment.Guiding system 80 is respectively along positive Z-direction and anti- Z-pluggable OCM20 is directed in box 11 and is guided out box 11 to Z-direction.Once Z-pluggable OCM20 is fully inserted into box In 11, then it is ready to by actuator mechanism 70 along the upper face 72a that Y-direction drops to motherboard PCB72.

The Ai Kemu screws 73 of actuator mechanism 70 include head 73a and threaded shank (displaying), and wherein head 73a is fixed to One end of threaded shank and be fastened to front panel 12 metal baffle 12a adjoin.The phase of the threaded nut 73b of Ai Kemu and bar Threadably engage and be coupled in a rotative pattern the rear vertical wall 75a of groove housing 75 in opposite end.Cam 90 is solid along its length Surely it is fastened to the bar of Ai Kemu screws 73.For this reason, bar is invisible in Figure 5.Cam 90 has formed therein Limit the cam face 90a of the direct of travel of cam-follower 81.When Ai Kemu screws 73 are rotated in the clockwise direction, cam 90 move along the positive Z-direction indicated by arrow 63.When cam 90 is moved along this direction, the direct of travel of cam-follower 81 Guiding system 70 is caused to reduce, i.e. along the movement of downward Y-direction.When Ai Kemu screws 73 are rotated in the counterclockwise direction, cam 90 Move along the reverse Z-direction indicated by arrow 64.When cam 90 is moved along this direction, the direct of travel of cam-follower 81 is caused Guiding system 70 is set to increase, i.e. along the movement of Y-direction upwards.

It is fully-inserted so that EMI shield 22 adjoins it with baffle plate 12a through front panel 12 in Z-pluggable OCM20 Afterwards, the head 73a of Ai Kemu screws 73 is rotated in the counterclockwise direction two circles to cause OCM20 to decline (i.e., by the people for installing OCM20 Along the movement of downward Y-direction) on the upper face 72a of motherboard PCB72.When OCM20 has been fully lowered into the top of motherboard PCB72 When on the 72a of surface, the conductive contact array and the upper face for being placed in motherboard PCB72 of the PCB40 (Fig. 4) of OCM20 are placed in Corresponding conductive contact array 71 on 72a is contacted.It is to remove OCM20 from system 10, removes the people of OCM20 by Ai Kemu screws 73 head 73a is rotated in the clockwise direction two circles and leaves motherboard PCB72 to cause OCM20 to rise (that is, along Y-direction upwards).This People then can be by away from front panel 12 and generally perpendicular to front panel 12 along reverse Z-direction slip OCM20 and by OCM20 from being System 10 is removed.Certainly, two circles not can be used for unique pitch of this purpose, thus this be only screw rotational actuator mechanism 70 can The example of the mode of operation.

Fig. 6 A to 6E graphic extensions adopt spring loaded actuator mechanism 110 to assign motion along upwardly or downwardly Y-direction Give the perspective view of the optical communication system 100 of Z-pluggable OCM120.Optical communication system 100 includes the gold with front panel 102 Category system box or housing 101.The side of box 101 is removed so that spring loaded actuator machine is more easily seen in Fig. 6 A to 6E Structure 110.Motherboard PCB103 is installed on the upper face of bottom panel 104 of box 101.With show the class of jack 4 in Fig. 1 and 2 Like or the multiple Meg-array jacks 105 of identical be installed on the upper face 103a of motherboard PCB103.It is installed on along Z-direction The number of the Meg-array jacks 105 on motherboard PCB103 is equal to included in each of Z-pluggable OCM120 The number of POCM106.

Fig. 6 A are illustrated in one of Z-pluggable OCM120 and are formed through in front panel 102 along positive Z-direction Optical communication system 100 and OCM120 before opening insertion.It is complete that Fig. 6 B are illustrated in one of Z-pluggable OCM120 After being fully inserted in the system 100 but exactly optical communication system 100 before spring loaded actuator mechanism 110 is triggered And OCM120.Fig. 6 C are illustrated in after spring loaded actuator mechanism 110 is triggered but are being stored in actuator mechanism All energy in 110 main compression spring 111 be released before optical communication system 100 and Z-pluggable OCM120 in One.Fig. 6 D are illustrated in spring loaded actuator mechanism 110 and have been triggered and have been stored in all energy in main spring 111 The top table for making cam (displaying) that Z-pluggable OCM120 to be forced to motherboard PCB103 along downward Y-direction has been released so that One of optical communication system 100 and Z-pluggable OCM120 after on the 103a of face.Fig. 6 E are illustrated in release button 130 are pressed to cause the cam of spring loaded actuator mechanism 110 (displaying) to make Z-pluggable OCM120 along upwards by user Y-direction is lifted off the optical communication system 100 after the upper face 103a of motherboard PCB103, wherein Z-pluggable OCM120 One of be completely inserted in system 100.The operation of spring loaded actuator mechanism 110 is described now with reference to Fig. 6 A to 6E Mode.

Spring loaded actuator mechanism 110 includes main spring 111, pedestal 112, screw 113, sliding part 114, release triggering Device 116, vertical support member 117, downward trigger 118 and the cam (displaying) being housed in guiding system 140.Spring 111 Near-end be fixedly secured to pedestal 112.The near-end of screw 113 is also fixedly secured to pedestal 112.The bar 113a of screw 113 The opening being formed in sliding part 114 can be slid through along Z-direction.Release trigger 116 coupling in a rotative pattern on its distal end Close pedestal 112.When actuator mechanism 110 is in the state backward or position shown in Fig. 6 B, trigger 116 is discharged On its distal end pivotal contact is placed in the pin 121 on the opposite side of vertical support member 117.Downwards trigger 118 has placement Screw 113 is contacted when in free space with its rearward position that spring loaded actuator 110 is shown in Fig. 6 B Head 113b near-end.Downwards the distal end of trigger 118 is coupled mechanically to discharge trigger 116.

When Z-pluggable OCM120 is inserted in the inside of box 101 along Z-direction through front panel 102, Z-pluggable The upper face 131a engagement spring loaded actuators mechanism 110 of the housing 131 of OCM120, it can edge in guiding system 140 Positive and reversely Z-direction movement.Load along positive Z-direction push the spring along the power that positive Z-direction applies to Z-pluggable OCM120 Actuator 110, until spring loaded actuator 110 is in its rearward position, as demonstrated in Figure 6 B.When load on spring is activated When device 110 is advanced along this direction, the distance between pedestal 112 and sliding part 114 reduce, so as to cause main spring 111 to be compressed. When spring loaded actuator mechanism 110 advances along this direction, the bar 113a of screw 113 slides through and is formed at sliding part 114 In the direction that indicated by arrow 145 with edge of opening extend.When spring loaded actuator mechanism 110 reaches its rearward position, The head 113b of screw 113 contacts the near-end of downward trigger 118.

Downwards trigger 118 is substantially lever so that by near-ends of the head 113b of screw 113 to downward trigger 116 The power of applying causes the distal end of downward trigger 118 along the movement of Y-direction upwards.When the distal end of downward trigger 118 is along this direction When mobile, downward trigger 118 triggers release trigger by making the distal end of release trigger 116 be disengaged from pin 121 116.When this happens, the energy being stored in main spring 111 is released, and it forces spring loaded actuator mechanism 110 from figure Its forward facing position movement that its rearward position shown in 6B is shown towards in Fig. 6 D.When spring loaded actuator mechanism When 110 its rearward position shown from Fig. 6 B move to its forward facing position shown in Fig. 7 D, spring loaded actuator Mechanism 110 activate guiding mechanism 140 cam (displaying), the cam along downward Y-direction promote Z-pluggable OCM120 so that Contact the conductive contact (displaying) being placed in the lower surface of the PCB of OCM120 (displaying) and be placed in corresponding Meg- Conductive contact (displaying) in array jacks 105.

Reference picture 6E, optical communication system 100 also includes the load on spring comprising release button 130 and compression spring 135 Button mechanism.The Part I 130a of release button 130 extends through the opening 130c being formed in front panel 102.Button 130 Part II 130b extend behind in front panel 102.Compression spring 135 has with the Part II 130b of button 130 with machine Near-end and the distal end of adjacent springs load actuator mechanism 110 that tool mode is coupled.When Z-pluggable OCM120 is opened up in figure 6d When in the entrance shown and downward (in-and-down) position, button 130 is fully extended from front panel 102.If along inside Z side Almost flush with front panel 102 until the Part I 130a of button 130 to pressing button 130, then compression spring 135 it is remote End will apply that its power will be forced along Z-direction backward to spring loaded actuator mechanism 110.When this happens, it is housed in guiding Along Y-direction upwards, to Z-pluggable OCM120 applying power, the power will cause Z-pluggable to cam (displaying) in system 140 OCM120 is disengaged from motherboard PCB103.User can then pass through it is applied along reverse Z-direction (that is, away from front panel 102) Power and Z-pluggable OCM120 is extracted from system 100.

Z-pluggable OCM120 includes being fastened to the EMI shield 160 of baffle plate 161a of fiber optic cables 161, and (Fig. 6 A are arrived 6E).EMI shield 160 is similar or identical with EMI shield 22 (Fig. 3 to 5).EMI shield 22 is by metal material (such as (for example) thin sheet of metal) makes, and it is firm and and a certain degree of flexibility of offer.Such as in the diagram can be more clear See to Chu, the part 22a of EMI shield 22 curves inwardly on all sides.When Z-pluggable OCM20 it is fully-inserted at its When in position, the part 22a and baffle plate 12a being installed on front panel 12 is adjoined.The flexible of EMI shield 22 allows part 22a is slightly distorted to guarantee that it is continuously contacted with metal baffle 12a.It is fully-inserted that once Z-pluggable OCM20 has been placed on its In position, then part 22a is even protected when Z-pluggable OCM20 is moved by actuator mechanism 70 along upwardly or downwardly Y-direction Hold and continuously contacted with baffle plate 12a.

The EMI shield 160 shown in Fig. 6 A to 6E is same.For example, can be seen in Fig. 6 B to 6D, EMI shield 160 keeps and front panel 102 in Z-pluggable OCM120 along downward and Y-direction upwards reduction and during raising It is adjacent.Both provide sane EMI shieldings solution EMI shield 22 and 160.Can also see in Fig. 3 and 5, baffle plate 12a Have along the wall 12a' that backward Z-direction is protruded from baffle plate 12a on the opposite side of baffle plate 12a.These walls 12a' with it is neighbouring these Wall 12a' is inserted into the part 22a of the corresponding EMI shield 22 of Z-pluggable OCM20 in system 10 and adjoins.This feature enters one Step prevents there is air gap at front panel 12, and this guarantees that considerably less (if present) EMI is fled from via front panel 12 from box 11.

Another embodiment of Fig. 7 A to 7D graphic extensions optical communication system 200, it is configured to receive Z-pluggable OCM210 and (do not show) including actuator mechanism, the actuator mechanism be used for will motion along downwards and upwards, Y-direction gives Z Pluggable OCM210 is causing respectively the motherboard PCB220 of its engagement systems 200 and be disengaged with the motherboard PCB220 of system 200. Fig. 7 A graphic extensions are exactly formed through the opening 212a in the front panel 212 of system 200 and insert it in Z-pluggable OCM210 The front perspective view of front optical communication system 200.Fig. 7 B are illustrated in Z-pluggable OCM210 and are fully inserted into system 200 Afterwards but Z-pluggable OCM210 by actuator mechanism (displaying) reduce to engage motherboard PCB220 before optical communication system The front perspective view of system 200.Fig. 7 C are illustrated in after Z-pluggable OCM210 is fully inserted into in system 200 and in Z and can insert Pull out before the optical communication system 200 after OCM210 is reduced to engage motherboard PCB220 by actuator mechanism (displaying) thoroughly View.Optics in the fully-inserted and position of engagement that Fig. 7 D graphic extensions wherein Z-pluggable OCM210 is shown in fig. 7 c The front perspective view of communication system 200, wherein module for optical connector 230 are connected to Z-pluggable OCM210.

There is Jing to configure in the same manner to receive corresponding Z for the embodiment of the optical communication system 200 shown in Fig. 7 A to 7D Multiple grooves 240 of pluggable OCM210.The configuration of groove 240 will be described with reference to Fig. 8 to 12.Fig. 8 graphic extensions are decomposed in it One of groove 240 of form is with the individual elements of displaying groove 240.Groove 240 by framework 241, heat spreader structures 242, Cam 243, heart axle 244 and holding clip 245 are constituted.Institute in Fig. 9 A and 9B Fig. 8 of difference graphic extension in its assembled form Show the front perspective view and rear view of groove 240.Figure 10 A and 10B difference graphic extension heat spreader structures demonstrated in Figure 8 The perspective view of 242 front perspective view and the difference graphic extensions of rear view Figure 11 and 12 cam 243 and heart axle 244.

The mode of assembling groove 240 is described now with reference to Fig. 8 to 12.It is convex by first as shown in Figure 10 A and 10B Wheel 243a and the second cam 243b be inserted into the cam-follower depression 242a that is formed in the opposite end of heat spreader structures 242 and In 242b.Vertical channel 242c for allowing the movement of heart axle 244 extends to heat spreader structures from the front end 242d of heat spreader structures 242 242 rear end 242e.Such as it is seen best in Fig. 8 to 9B, in cam 243a and 243b cam-follower depression has been positioned at After in 242a and 242b, heat spreader structures 242 are inserted in framework 241 so that the front end 242d of heat spreader structures 242 is adjacent The inner surface of the antetheca 241a of nearly framework 241 and the rear end 242e of heat spreader structures 242 is caused adjacent to the rear wall 241b of framework 241 Inner surface.

The heat spreader structures 242 for being positioned with cam 243a and 243b wherein have been fastened to after framework 241, heart axle 244 distal end is through first through hole 241c and the second through hole being respectively formed in the antetheca 241a of framework 241 and rear wall 241b 241d and offset apertures 243c (Figure 11) that are formed through in cam 243a and 243b and insert.Offset apertures 243c each have circle Cylindrical internal surface part 243d and flat inner surface part 243e, it forms together the keyway in cam 243a and 243b.Heart axle 244 have trough of belt hexagonal head 244a and bar 244b.Bar 244b has cylindrical outer surface portion 244c and flat outer surfaces portions Divide 244d, it forms together key.When careful axle 244 is inserted in offset apertures 243c being formed in cam 243a and 243b, partially The cylindrical form interior surface part 243d for moving hole 243c is contacted with cylindrical outer surface portion 244c of bar 244b, and offset apertures 243c Flat inner surface part 243e contact with the flat outer surface part 244d of bar 244b.In this way, heart axle 244 is with key/key Groove coupled configuration is coupled with cam 243a and 243b.

When groove 240 is in its assembled form shown in Fig. 9 A and 9B, trough of belt hexagonal head 244a of heart axle 244 Adjoin with the outer surface of the antetheca 241a of framework 241.Keep clip 245 and then clip to the retaining clip sub-trenches shown in Figure 12 In 244e, so that keep clip 245 to adjoin with the outer surface of the rear wall 241b of framework 241, as shown in Fig. 9 B.Framework 241 are fastened to motherboard via the fastening device (displaying) of the opening 246a insertions being formed through in the bottom 246 of framework 241 The upper face of PCB220.

According to the actuator mechanism of this illustrative embodiment by framework 241 part, heat spreader structures 242, cam 243a And 243b, heart axle 244 and holding clip 245 are constituted.As shown in Figure 10 B, heat spreader structures 242 have be inserted into when it The rail 211 being formed on the opposite side of Z-pluggable OCM210 is engaged when in the opening 212a (Fig. 7 B) being formed in front panel 212 The rail 251 being formed on its opposite side of (Fig. 7 A).

Once Z-pluggable OCM210 is fully inserted in groove 240, as shown in Fig. 7 B, then it gets out drop It is low on motherboard PCB220.Show one or more Meg-array jacks 221 (Fig. 7 A and 7B) of type in Fig. 1 and 2 On the upper face 220a of the motherboard PCB220 being installed in groove 240.The bottom of the PCB (displaying) of Z-pluggable OCM210 Have above surface for one or more Meg-array adapters of corresponding Meg-array jacks 221 cooperation (not Show).It is that Z-pluggable OCM210 is reduced on motherboard PCB220 and is that Z-pluggable OCM210 is increased to into motherboard PCB220 On, user is such as described using the head 244a of screwdriver or the like mandrel 244 now with reference to Figure 13 A to 13D.

In figure 13a, Z-pluggable OCB210 is in its raised position.When user's mandrel 244 in the counterclockwise direction During head 244a, cam 243a and 243b is in cam-follower the depression 242a and 242b of heat spreader structures 242 from it against recessed The top of cave 242a and 242b apply institute's display location in Figure 13 A of upwardly-directed power move to it against depression 242a and Institute's display location in Figure 13 B to 13D of the power that the bottom applying of 242b is downwardly oriented.In Figure 13 D, under the PCB of OCM210 Meg-array adapters (displaying) on portion surface are connected with the Meg-array jacks 221 being placed on motherboard PCB220. Be rotated in the opposite sense the head 244a of heart axle 244 will cause OCM210 away from motherboard PCB220 along Y-direction raise with allow by OCM210 is removed from system 200.

Figure 14 graphic extensions are connected to the strain solutions of Z-pluggable OCM120 shown in Fig. 6 A to 6E except device and electricity The perspective view of cable 161 and baffle plate 161a.Because Z-pluggable OCM120 so can be densely installed on front panel 102, therefore pass System strain solutions can not be provided for less than or equal to about 0.125 inch or about 125 mils except component (for example, rubber sleeve) Enough bending resistances of the cable 161 of thickness or diameter.According to illustrative embodiment, strain solutions include metal wire or rod except device 163 group or bundle 162, it has the end 163a being held between the first fixture 164 and the second fixture 165.Metal wire 163 is straight Footpath can be (for example) 0.015 inch (15 mil).

Generally, metal wire 163 has scope from about 15 mils to the diameter of about 32 mils.Line 163 included in bundle Number depends on other Considerations described below, but by usually two to three ten, and will be most frequently ten to two ten.Line Group 162 is sufficiently strong to allow bending radius to prevent cable 161 from bending out its minimum.The intensity of line-group group 162 also can lead to Cross more or less line 163 used in each group 162 and be easily adjusted.

Figure 15 graphic extensions strain solutions except the perspective view of one of device, the one comprising component 162,163,164, 165.Figure 15 also shows that a part for one of the cable 161 that shown in Figure 14.Figure 16 graphic extensions cable 161, baffle plate 161a and strain solutions are except the cross-sectional view of device 162/163/164/165.According to the illustrative reality of Fig. 6 A to 6E and Figure 14 to 16 Example is applied, the distance between neighbouring Z-pluggable OCM120 is so little so that rubber strain solutions would be impossible to provide sufficient except device Strain solutions are removed.In general, strain solutions should be hard enough with the mechanical energy of absorption scheduled volume and with permission cable except device Bending scheduled volume prevents cable bend beyond the spring constant of predetermined minimum bending radius simultaneously.Because the Z at front panel can be inserted Pull out the space that the dense pack of OCM120 formed to limit, rubber sleeve will likely too little and machine that can not absorb the amount for needing to absorb Tool energy.On the other hand, robust metallic strain solutions will likely be too hard except device and cable bend can not be allowed to want or required Amount.

Embodiments in accordance with the present invention, it has been determined that metal wire 163 is grouped into into together the parallel metal wire of a bundle and by its end 163a is clamped to the end part of cable 161 and forms spring, and the spring provides sufficiently rigid to absorb scheduled volume with for it Mechanical energy provides the sufficiently flexible spring constant to allow it to bend to predetermined minimum bending radius for it simultaneously.Stated In bright property embodiment, group 162 is comprising the length (that is, fixture 164 and the distance between 165) with about 1.75 inches and about .015 13 wires 163 of the diameter of inch or 15 mils.

Strain solutions allow the cable 161 of the diameter generally with about an inch to bend to not less than about except this configuration of device One inch of minimum bending radius.Can be by using more or less line 163, the diameter by changing line 163, by changing system Make the material of line 163 and/or customize or adjust spring by changing the length of the line 163 being placed between fixture 164 and 165 Rigidity.Strain solutions are that very tolerance limit is friendly except the adjustable of device causes it so that it is applied to many fiber optic cables Using in.

Describe for the principle of the description present invention and the purpose of concept with reference to several illustrative or exemplary embodiments The present invention.It is understood by those skilled in the art that and the invention is not restricted to these illustrative embodiments.For example, although will Line or rod 163 are shown as being clamped to cable 161 by first and second fixture, but by the end 163a clampings of metal wire 163 or admittedly Surely the single clamping device for being fastened to cable 161 can be used for this purpose.Such as those skilled in the art in view of institute herein The explanation of offer to embodiment described herein it will be appreciated that, can modify while still realize target of the invention, and institute There is this little modification within the scope of the invention.

Claims (18)

1. a kind of strain solutions for being used together with the fiber optic cables of optical communication system remove device, and the strain solutions remove device bag Contain：

Many wires or rod, it is grouped into the parallel metal wire of a bundle and is placed in contact with the top surface of the fiber optic cables, its Described in the parallel metal wire of a bundle include the first layer line and the second layer line, first layer line is placed in contact with the fiber optic cables Top surface and second layer line is placed in contact with the top surface of first layer line；And

Clamping device, it is used to that first and second end of the metal wire to be clamped to the top surface of the fiber optic cables On.

2. strain solutions according to claim 1 remove device, wherein the metal wire or rod have in about 15 mils and about 32 Diameter between mil.

3. strain solutions according to claim 2 remove device, wherein the metal wire or rod have the diameter of about 15 mils.

4. strain solutions according to claim 3 remove device, wherein having ten in the bundle to 30 wires or rod.

5. strain solutions according to claim 4 remove device, wherein having ten in the bundle to 20 wires or rod.

6. strain solutions according to claim 1 remove device, wherein the clamping device is included being used for the metal wire First end is clamped to the first fixture on the top surface of the fiber optic cables and for the second end of the metal wire to be pressed from both sides Hold the second fixture on the top surface of the fiber optic cables.

7. a kind of fiber optic cables for used in optical communication system, the fiber optic cables are included：

Strain solutions remove device, and it is fastened to the end part of the fiber optic cables, and the strain solutions are included except device：

Many wires or rod, it is grouped into the parallel metal wire of a bundle and is placed in contact with the top surface of the fiber optic cables, its Described in the parallel metal wire of a bundle include the first layer line and the second layer line, first layer line is placed in contact with the fiber optic cables Top surface and second layer line is placed in contact with the top surface of first layer line；And

Clamping device, it is used to that first and second end of the metal wire to be clamped to the top surface of the fiber optic cables On；

And

Baffle plate, it is fixedly secured to one end of the end part of the fiber optic cables.

8. fiber optic cables according to claim 7, wherein the metal wire or rod have in about 15 mils and about 32 mils Between diameter.

9. fiber optic cables according to claim 8, wherein the metal wire or rod have the diameter of about 15 mils.

10. fiber optic cables according to claim 8, wherein having ten in the bundle to 30 wires or rod.

11. fiber optic cables according to claim 10, wherein having ten in the bundle to 20 wires or rod.

12. fiber optic cables according to claim 7, wherein the clamping device is included being used for the first of the metal wire Hold the first fixture being clamped on the top surface of the fiber optic cables and for the second end of the metal wire to be clamped to The second fixture on the top surface of the fiber optic cables.

13. is a kind of for providing the method that strain solutions are removed for fiber optic cables, and methods described is included：

There is provided for the fiber optic cables used in optical communication system；

Strain solutions are provided and remove device, the strain solutions are included except device：Many wires or rod, it is grouped into a bundle and row metal Line is simultaneously placed in contact with the top surface of the fiber optic cables, wherein the parallel metal wire of a bundle includes the first layer line and the second layer Line, first layer line is placed in contact with the top surface of the fiber optic cables and second layer line is placed in contact with described first The top surface of layer line；And clamping device, it is used to for first and second end of the metal wire to be clamped to the fiber optic cables The top surface on；And

On top surface by clamping device by the strain solutions except the end part of device is fastened to fiber optic cables.

14. methods according to claim 13, wherein the metal wire or rod have about 15 mils and about 32 mils it Between in the range of diameter.

15. methods according to claim 14, wherein the metal wire or rod have the diameter of about 15 mils.

16. methods according to claim 14, wherein having ten in the bundle to 30 wires or rod.

17. methods according to claim 16, wherein having ten in the bundle to 20 wires or rod.

18. methods according to claim 13, wherein the clamping device is included being used for the first end of the metal wire The first fixture for being clamped on the top surface of the end part of the fiber optic cables and for by the second end of the metal wire The second fixture being clamped on the top surface of the end part of the fiber optic cables.