CN103744145A - Single-optical-port wavelength division multiplexing/demultiplexing photoelectric transceiver device - Google Patents
Single-optical-port wavelength division multiplexing/demultiplexing photoelectric transceiver device Download PDFInfo
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Abstract
The invention discloses a single-optical-port wavelength division multiplexing/demultiplexing photoelectric transceiver device. A pin and a glass carrier are respectively arranged above and below a collimating lens of the device. A total reflector plate and a band-pass optical filter array are respectively bonded on the upper surface and the lower surface of the glass carrier. A glass partition is arranged below the glass carrier. An optical circulator is arranged above the glass carrier or on one side surface of the glass partition. A laser transmitting module and a detector receiving module are respectively arranged on the two side surfaces of the glass partition. The single-optical-port wavelength division multiplexing/demultiplexing photoelectric transceiver device has the advantages that since the laser module and the detector module share the same multiplexer/demultiplexer and one public optical port, the input and the output of downlink detector signals and uplink laser signals from the same optical port can be realized, the used device cases and the size of a module can be effectively reduced, the miniaturization and the integration of the device and the module are facilitated and the working wavelength of the device can be applied to the situation of simultaneous working of multi-channel wavelength of CWDM (Coarse Wavelength Division Multiplexing) and LWDM (LAN Wavelength Division Multiplexing).
Description
Technical field
The present invention relates to belong to optical communication field, be specifically related to a kind of monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device.
Background technology
Now due to the rapid growth of communication bandwidth requirements, the development of the wavelength-division multiplex of multi-channel transmission, the optical device of demultiplexing has obtained certain progress, the patent that is CN201210184192 and US2012/0189306 A1 as the patent No. is all fairly simple feasible schemes, but the detector device of this class device or module and laser device are independent in two shells, or detector assembly and laser assembly be assembled in a large shell, but have a defeated light inlet and a defeated light-emitting window.So far also do not have a device to only have an input, defeated light-emitting window and make laser device and detector device by common light port transmission.
The following several modes of the many employings of the wavelength-division multiplex that the multichannel device of high-speed transfer or module adopt at present or demultiplexing scheme: first kind of way is array waveguide grating, be called for short AWG, the advantage of AWG is to adopt waveguide material, its integrated level is high, can with chip of laser, detector chip is prepared with substrate, in function, can reach concurrent multiplexing and demultiplexing, particularly be applied in compared with multichannel as 8 channels when above tool have great advantage, operation wavelength can be applicable to CWDM(Coarse Waverlength Division Multiplexing, Coarse Wavelength Division Multiplexing), LWDM(LAN Waverlength Division Multiplexing, LAN (Local Area Network) wavelength-division multiplex) and DWDM(Dense Wavelength Division Multiplexing, dense wave division multipurpose), also existent defect is as high in cost simultaneously, Insertion Loss large and coupling difficulty is more high for it.The second way is etched diffraction grating, and itself and AWG are similar, adopts waveguide material, its integrated level is high, can with substrate, prepare with chip of laser or detector chip, in function, can realize multiplexing or demultiplexing, AWG is half as large for its volume ratio, and operation wavelength can be applicable to CWDM, LWDM and DWDM; Its shortcoming is filtering characteristic imperfection, cost is high, Insertion Loss is large and coupling difficulty is more high.The third mode is Thin Film Filter, its advantage be that cost is low, filtering characteristic good, Insertion Loss is little and during coupling lateral tolerances large, be applicable to the less as situation below 16 passages of number of signals, operation wavelength can be applicable to CWDM and LWDM; Its shortcoming is that element is independent, small size is cut with difficulty, assembly precision is higher.For 4 × 10G, 4 × 25G device cheaply, adopt above-mentioned Thin Film Filter scheme more.But the feature of optical filter is to be reversible for up and descending cochannel light signal, be that descending and descending cochannel light signal all can expeditely see through optical filter, for thering is the device of detector and laser instrument, cannot directly use a light mouth simultaneously, need to adopt special function element to separate upward signal and downgoing signal.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device, comprise up laser assembly and descending detector assembly, the two shares a multiplexing demultiplexing device, an and common light mouth, described laser assembly is with detector assembly by the separate light path of optical circulator, and its operation wavelength can be applicable to the situation that the multichannel wavelength of CWDM and LWDM works simultaneously and can be packaged in the modules such as CFP, CFP2, CFP4, QSFP+.
The invention provides a kind of monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device, comprise detector receiving unit, laser instrument emitting module, contact pin, collimation lens, glass carrier, total reflection sheet, bandpass filter array, glass partition and optical circulator; The top of described collimation lens, below are respectively arranged with contact pin, glass carrier, the upper surface of described glass carrier, lower surface are pasted with respectively total reflection sheet and bandpass filter array, described glass partition is arranged at glass carrier below, described optical circulator is arranged on the top of glass carrier or a side of glass partition, and the two sides of described glass partition arrange respectively laser instrument emitting module and detector receiving unit.
Described laser instrument emitting module comprises collimator lens array and chip of laser array; Described detector receiving unit comprises reflector plate, plus lens array and detector chip array; Described chip of laser array is arranged at described collimator lens array below; Described reflector plate is arranged at described collimator lens array top, and described detector chip array is arranged at plus lens array below.
On the optical axis of described contact pin in collimation lens, the central shaft of described bandpass filter just arranges described optical circulator light mouth A upward, the optical axis of described optical circulator light mouth B positive alignment collimating lens array down, described chip of laser array is arranged in each lens focus of collimator lens array; Described detector chip array is arranged in each lens back focus of plus lens array.
Described laser instrument emitting module comprises collimator lens array and chip of laser array; Described detector receiving unit comprises plus lens array and detector chip array; Described chip of laser array is arranged at the below of described collimator lens array; One side of described plus lens array is arranged on the side of glass partition, the outer setting detector chip array of opposite side.
On the optical axis of described contact pin in collimation lens, the central shaft of described bandpass filter just arranges described optical circulator light mouth A upward, the optical axis of described optical circulator light mouth B positive alignment collimating lens array down, described chip of laser array is arranged in the each lens focus of collimator lens array; Described detector chip array is arranged in the lens back focus of plus lens array, and the optical axis of described plus lens array and the lateral vertical of glass partition.
Described optical circulator is arranged at the top of glass carrier; Described laser instrument emitting module comprises collimator lens array and chip of laser array; Described detector receiving unit comprises reflector plate, plus lens array and detector chip array; Described chip of laser array is arranged at described collimator lens array below; Described reflector plate is arranged at glass carrier top, and its reflecting surface is towards the light mouth C of optical circulator, and described detector chip array is arranged at plus lens array below.
The workplace of described glass carrier comprises upper surface and lower surface, and described upper surface is towards collimation lens, and described lower surface is towards laser instrument emitting module; And described upper surface and lower surface relative level direction tilt.
Described glass partition is vertically arranged at the below of described glass carrier, and its vertical surface comprises interconnective transmission region and frosted glass region, and wherein transmission region is positioned at the top in frosted glass region.
Described optical circulator is arranged at described transmission region; Described collimator lens array and chip of laser array are arranged at described frosted glass region; Described reflector plate is arranged at described transmission region; Described plus lens array and detector chip array are arranged at described frosted glass region.
Described chip of laser array comprises multiple laser instrument transmitting chips, and described collimator lens array comprises multiple collimation lenses; When described optical circulator is arranged at a side surface of glass partition, the number of described optical circulator is multiple, and the number of optical circulator equates with the number of the chip of laser in described chip of laser array and the collimation lens in collimator lens array, and the equal correspondence in the top of each collimation lens is provided with an optical circulator, the equal correspondence in below of each collimation lens is provided with a laser instrument transmitting chip.
The advantage that the present invention has is:
In the present invention, laser assembly and detector assembly share a multiplexing demultiplexing device, an and common light mouth, can realize descending detector signal and up laser signal in the input of same light mouth place, output, can effectively reduce the use of device package and the volume of module, contribute to the miniaturization of device and module and integrated.In the present invention, laser assembly is with detector assembly by the separate light path of optical circulator, and its operation wavelength can be applicable to the situation that the multichannel wavelength of CWDM and LWDM is worked simultaneously, and can apply in modules such as being packaged in CFP, CFP2, CFP4, QSFP+.
Accompanying drawing explanation
Fig. 1 is the light mouth structure location drawing of optical circulator in the present invention;
Fig. 2 a, Fig. 2 b are that the light oral instructions of optical circulator in the present invention enter to spread out of structural drawing;
Fig. 3 is the side-looking structural representation of optoelectronic transceiver device in the present invention;
Fig. 4 is the structural representation of optical filter box in the present invention;
Fig. 5 is the index path of descending detector light signal in optical filter box in the present invention;
Fig. 6 is the index path of up laser signal in optical filter box in the present invention;
Fig. 7 is the structural representation of glass partition in the present invention;
Fig. 8 is the structural representation of laser instrument emitting module in the present invention;
Fig. 9 is the structural representation of detector receiving unit in the present invention;
Figure 10 is that the light path of laser signal up in the present invention is propagated schematic diagram;
Figure 11, Figure 12 are side view and the front views that the light path of detector signal descending in the present invention is propagated;
Figure 13, Figure 14, Figure 15 are that in the present invention, optoelectronic transceiver assembly is for the structural representation of the another kind of arrangement of detector receiving chip array, and wherein Figure 13 and Figure 15 are side views, and Figure 14 is front view;
Figure 16, Figure 17 be in the present invention optoelectronic transceiver assembly for side view and the front view of the another kind of arrangement of optical circulator;
Figure 18 and Figure 19 are front view and the side views that is used in the optical transceiving device of n channel.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, can be implemented, but illustrated embodiment is not as a limitation of the invention so that those skilled in the art can better understand the present invention also.
The invention provides a kind of monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device, described optoelectronic transceiver device can be applicable to the situation that the multichannel wavelength of CWDM or LWDM is worked simultaneously, the conventional number of channel has 4,8,16 etc., the structure of its optoelectronic transceiver device of the different numbers of channel is consistent, difference is only the increase and decrease along with the number of channel, the corresponding increase and decrease of number of each lens correspondingly, each optical filter and circulator.The number of channel is no maximum in theory, but generally accomplishes 16 passages left and right during practical application.Below take operation wavelength adopt CWDM conventional four wavelength,,, as example describes, the value of four described wavelength can be 1271nm, 1291nm, 1311nm, 1331nm.
As shown in Figure 3, the optoelectronic transceiver device that the present embodiment provides comprises detector receiving unit, laser instrument emitting module, contact pin 1, collimation lens 2, glass carrier 3, total reflection sheet 4, bandpass filter array 5, glass partition 6 and optical circulator 7.Described contact pin 1, collimation lens 2, glass carrier 3, total reflection sheet 4, bandpass filter array 5 and laser instrument emitting module are all positioned in same I, described detector emitting module is positioned in face II, face I and the face II both sides in glass partition 6 respectively, and be parallel to each other, and parallel with glass partition 6.Described laser instrument emitting module comprises the chip of laser array 9 of collimator lens array 8 and concurrent working.Described detector receiving unit comprises reflector plate 10, plus lens array 11 and detector chip array 12.Described reflector plate is preferably the reflector plate of 45 ° ± 8 °.In the present embodiment, adopt passive device optical circulator 7 to complete separation to upward signal and downgoing signal, can select the circulator of three light mouths or four light mouths, wherein the cost of three light mouths is low, its structure as shown in Figure 1, it comprises light mouth A, light mouth B and light mouth C, certainly, described optical circulator 7 also comprises and in figure, fails the internal passive element that illustrates.Adopt specific material and layout, can make optical circulator 7 reach different input/output functions, as shown in Figure 2 a, when light signal is inputted from light mouth A, only, from light mouth C output, in light mouth B, without any signal, light mouth B is played to buffer action; As shown in Figure 2 b, when light signal is inputted from light mouth B, only, from light mouth A output, in light mouth C, without any signal, light mouth C is played to buffer action.Therefore, can utilize optical circulator 7 that up laser signal is transmitted from light mouth B to light mouth A, descending detector signal is transmitted from light mouth A to light mouth C, that therefore can realize upward signal, downgoing signal carries out the input and output of monochromatic light mouth.
Described contact pin 1 is the common light mouth of upward signal and downgoing signal, described collimation lens 2 is arranged at the below of contact pin 1, for the beam collimation that contact pin 1 is exported, described glass carrier 3 is arranged at the below of collimation lens 2, and slant setting, the upper and lower surface of the workplace of glass carrier and horizontal direction are obliquely installed.Described glass carrier 3 can be solid type glass plate, can be also the glass plate with hollow space, and total reflection sheet 4 and filter set 5 are played a supporting role.
Described glass carrier 3, total reflection sheet 4 and 5 assemblings of bandpass filter array form optical filter box, as shown in Figure 4, this assembly is the multiplexing demultiplexing device of device, the light signal of laser instrument emitting module transmitting is played to the effect of wavelength-division multiplex, the light signal that detector receiving unit is received plays the effect of demultiplexing.Described total reflection sheet 4 and bandpass filter array 5 stick on respectively upper surface D and the lower surface E of glass carrier 3 by accurate assembling, because glass carrier 3 is what be obliquely installed, wherein upper surface D collimation lens 2 upward arranges, laser instrument emitting module downward of lower surface E and detector receiving unit arrange, and are obliquely installed and make upper surface D and lower surface E horizontal by certain angle.After pasting, total reflection sheet 4 occupies the part area of the upper surface D of glass carrier 3, and as 3/4 area, the upper surface D of remaining area (as 1/4 area) is transmitted light mouth F, and transmitted light mouth F can add the glass sheet with anti-reflection film in place.Bandpass filter array 5 is placed and is formed for the bandpass filter parallel arranged of four applicable channel different operating wavelength of correspondence, the multichannel wavelength that each bandpass filter centre wavelength is CWDM or LWDM, and corresponding stickup is covered with whole lower surface E.
After optical filter box setting corresponding to collimation lens 2, make the optical axis alignment of transmitted light mouth F and the collimation lens 2 of optical filter box.For descending detector light signal, as shown in Figure 5, light enters in optical filter box with the direction of the optical axis that is parallel to the straight lens 2 in Huaihe River, afterwards by after optical filter box demultiplexing, to be parallel to the direction outgoing of straight lens 2 optical axises in Huaihe River.For up laser signal, as shown in Figure 6, the direction of parallel light optical axis of straight lens 2 in Huaihe River enters in optical filter box, multiplexing by optical filter box afterwards after, to be parallel to the direction outgoing of straight lens 2 optical axises in Huaihe River.
Meanwhile, described optical circulator 7 is together placed on the relative two sides of glass partition 6 with detector receiving unit, laser instrument emitting module.The structure of described glass partition 6 as shown in Figure 7, vertically be arranged at optical filter box below, its surface comprises interconnective transmission region 13 and frosted glass region 14, and wherein transmission region 13 is near optical filter box direction, and the below of frosted glass region 14 in transmission region 13.The effect of described optical circulator 7 is to separate upward signal and downgoing signal, is placed on the transmission region 13 of glass partition 6, and is positioned over laser instrument emitting module on same side.Before being placed on collimator lens array 8, an optical circulator 7 of the each placement in top of each collimator lens array 8 collimation lenses, as shown in Figure 8, in described collimator lens array 8, the number of lens equates with the number of optical circulator 7, and equates with the wavelength number of laser instrument emitting module.7 of each optical circulators light signal to this channel separates.The direction of the light mouth C of described optical circulator is towards glass partition 6, and the direction of described light mouth C is towards detector receiving unit.
The high-speed laser emitting module that optoelectronic transceiver assembly provided by the invention comprises upward signal and high speed detector receiving unit, two assemblies are assembled in respectively the both sides of glass partition 6, as shown in Figure 3.As shown in Figure 7, glass partition 6 upper half-spaces are smooth transmission region 13, and the lower half-space is irreflexive frosted glass region 14.The effect of transmission region 13 is to see through descending detector signal, and the effect in frosted glass region 14 is to reduce up laser signal to the crosstalking of detector chip, and descending detector echoed signal crosstalking to chip of laser.
Described laser instrument emitting module comprises the chip of laser array 9 of collimator lens array 8 and concurrent working, and lens arra 8 and chip of laser array 9 are arranged on the frosted glass region 14 of glass partition 6, as shown in Figure 8.Described collimator lens array 8 comprises four collimation lenses that optical parametric is identical, its structure composition form has two kinds: the first composition form be four independently collimation lens be arranged in parallel side by side, the optical axis height of four collimation lenses is identical, and the lateral separation between optical axis can be finely tuned; The second composition form is the array lens of Mold Making or etching, on a substrate, has four collimation lens elements, and the height of the optical axis of four collimation lenses is identical with spacing.Described chip of laser array 9 comprises four independently chip of laser, be arranged at respectively each collimation lens below of collimator lens array 8, and chip of laser is placed in the lens focus of collimator lens array 8 each collimation lenses, therefore the light signal of chip of laser transmitting, by after the collimation of collimator lens array 8, is propagated with the form of quasi-parallel light.Four chip of laser mount by high precision die bonder, highly identical, and centre distance equates.Each chip of laser in described chip of laser array 9 when arranging and between glass partition 6 tool at regular intervals.
Described detector receiving unit comprises the detector chip array 12 of reflector plate 10, plus lens array 11 and concurrent working, reflector plate 10 is arranged on the transmission region 13 of the another side of glass partition 6 relative laser instrument emitting modules, the detector chip array 12 of plus lens array 11 and concurrent working is arranged on the frosted glass region 14 of glass partition 6, as shown in Figure 9.Reflector plate 10 is arranged on the top of plus lens array 11, and described detector chip array 12 correspondences are arranged at the below of plus lens array 11.The reflecting surface of described reflector plate 10 is towards the light mouth C of plus lens array 11 and optical circulator 7.The light signal of the light mouth C outgoing of optical circulator reaches reflecting surface through can be directly to after the transmission region 13 of glass partition 6.Position relationship between array lens 8 and array lens 11 does not limit, do not require that mutual correspondence is as one man arranged at the both sides of glass partition, position relationship between described chip of laser 9 and detector chip array 12 does not also limit in addition, does not also require that mutual correspondence is as one man arranged at the both sides of glass partition.Reflector plate 10 at least can adopt the principle of work of two kinds, and first kind of way is reflecting surface plated film, and the second way is the total reflection of prism inside surface.Described plus lens array 11 composition forms have and have two kinds at least: the first composition form be four independently plus lens be arranged in parallel side by side, the optical axis height of four lens is identical, the lateral separation between optical axis can be finely tuned; The second composition form is the array lens of Mold Making or etching, on a substrate, has four lens elements, and the height of the optical axis of four lens is identical with spacing, and its effect is that descending quasi-parallel light signal is converged in detector chip array 12.Detector chip array 12 composition forms have two kinds, and the first composition form is four independently detector chip parallel arranged, can mount by high precision die bonder, and the second composition form is the chip array of chip technology moulding.Each detector chip of described detector chip array 12 is corresponding being arranged in the lens back focus of each plus lens of plus lens array 11 respectively.
In order to reduce the return loss of detector, can be by each detector chip slant setting in detector chip array 12, vergence direction can be any, but for the ease of mounting, the vergence direction of four detector chips is consistent with each other, angle of inclination is to be greater than 0 °, to be less than 12 ° arbitrarily angled, also can not be obliquely installed; Also the reflecting surface angle of reflector plate 10 can be set as to the unspecified angle between 37 ° ~ 53 °.
Light signal in optoelectronic transceiver assembly provided by the invention is mainly propagated with the form of quasi-parallel light.The advantage of directional light is that propagation distance is long, and when it is converged in effective propagation distance, the responsiveness or the coupling efficiency that converge light are more consistent, can guarantee the power of four passages of optoelectronic transceiver assembly and responsiveness evenly.
For up laser signal, its light path is propagated schematic diagram as shown in figure 10.Chip of laser array 9 is the chip of laser of four different operating wavelength, operation wavelength is respectively, and.The nearly Gaussian beam that chip of laser array 9 is launched forms quasi-parallel light after the collimation of collimator lens array 8, more than effective propagation distance of directional light can reach 15mm.Directional light enters the light mouth B of optical circulator 7, and from light mouth A output, as shown in Figure 2 b, sees through afterwards corresponding bandpass filter 5 in the interior propagation of glass carrier 3.The effect of bandpass filter 5 is that the light signal in specific narrow spectrum width is seen through, and to other light signal reflections, as 1311nm bandpass filter, to the light transmission of 1311 ± 8.5nm, and to the light reflection outside this passband, therefore 1271nm, 1291nm and 1331nm light wave can be reflected by optical filter.Upper surface D and the lower surface E of glass carrier 3 parallel, and all perpendicular to face I, and the angle of inclination on upper and lower two surfaces equates with the reflection angle of bandpass filter 5, and the light being therefore reflected can be along original angular spread.As shown in Figure 4, four bandpass filters are arranged from left to right, are followed successively by the 1st, the 2nd, the 3rd and the 4th channel strip pass filter, and the 1st channel strip pass filter is for wavelength transmission, to wavelength and reflection; The 2nd channel strip pass filter is for wavelength transmission, to wavelength and reflection; The 3rd channel strip pass filter is for wavelength transmission, to wavelength and reflection; The 4th channel strip pass filter is for wavelength transmission, to wavelength and reflection.For the rear direct light mouth transmission from glass carrier of first via quasi-parallel light transmission bandpass filter 5, all the other quasi-parallel light and need to be by the reflection of total reflection sheet 4 when the interior propagation of glass carrier 3, reflect light on the bandpass filter 5 of next passage, and reflection successively, finally arrive transmitted light mouth F place's transmission of the I/O of glass carrier 3.The directional light of transmission is collimated lens 2 and converges in contact pin 1, is transferred in link more afterwards by external wire jumper.Plus lens 2 plays the effect of converging for up directional light, descending detector signal is played the effect of collimation simultaneously.
For descending detector signal, its light path is propagated schematic diagram as shown in Figure 11, Figure 12.Descending Si road light signal in link, and be input in device by contact pin 1, the light of contact pin 1 outgoing is nearly Gauss light, be collimated afterwards lens 2 and collimate the directional light that is as the criterion, enter afterwards in the light mouth of glass carrier 3, and in the interior propagation of glass carrier 3, wherein first via light signal sees through after bandpass filter and directly enters in optical circulator 7, all the other light signals and need to pass through the reflection of total reflection sheet 4, bandpass filter 5, from corresponding bandpass filter 5 outgoing laggard enter in optical circulator 7.Four road light signals are inputted from the light mouth 1 of optical circulator 7, from light mouth C output, as shown in Figure 2 a, see through afterwards the transmission region 13 of glass partition 6, afterwards by the reflection of reflector plate 10, and are converged in detector chip array 12 by plus lens array 11.
The detector receiving unit of described optoelectronic transceiver assembly and laser instrument radiating portion be disposed to rare two kinds of arrangements, shown in Fig. 3, be arranged as the first arrangement, the second arrangement is as shown in Figure 13, Figure 14, Figure 15, in the second arrangement, the position of all parts is substantially constant, only detector receiving unit vertically need to be arranged, be that described detector chip array 12 is arranged on glass partition 6, described plus lens array 11 is arranged at the other side of detector chip array 11 with respect to glass partition 6, and does not need reflector plate 10.And then make the face III at detector receiving unit place perpendicular to the face I at laser instrument emitting module place.
The above two kinds of arrangements of described detector receiving unit, just in structure, change, for light path, reflector plate 10 can arrange, also can not arrange, because finally all will be converged to detector chip array 12 by plus lens array 11 from the light signal of the light mouth C outgoing of optical circulator 7.
For the setting of optical circulator 7, be limited to volume and the cost of optical circulator, the number of optical circulator 7 and placement location have two kinds of arrangements at least.Structure shown in Fig. 3 is the first arrangement, has adopted four optical circulators 7, and 7 of each optical circulators are for a wavelength job.The second arrangement is as shown in Figure 16, Figure 17, and whole optoelectronic transceiver assembly only adopts an optical circulator 7, is positioned over below, glass carrier 3 tops of collimation lens 2, and this optical circulator 7 needs simultaneously corresponding four wavelength work.Corresponding with it, the size of glass carrier 3 and bandpass filter 5 is at least thickeied to one times, the transmitted light mouth F of optical filter box also expands at least one times simultaneously, makes up laser optical signal and descending detector light signal in glass carrier, separate propagation.Reflector plate 10 is placed on to the top of optical filter box, its reflecting surface is towards the direction of the light mouth C of optical filter box and optical circulator 7 simultaneously.The light signal of the light mouth C outgoing of described optical circulator can be directly to and reaches reflecting surface.This structure, compared with first kind of way, can not increase size, can reduce by three optical circulators 7 simultaneously.
As shown in figure 16, in first scheme, the plane IV at detector receiving unit place is perpendicular to plane I.For descending optical signals contact pin 1, be input in device, through collimation lens 2, be transformed into the laggard light mouth A of optical circulator 7 of entering of quasi-parallel light afterwards, in Qi Guangkou C output, be transferred to again afterwards reflector plate 10 afterwards, through reflector plate 10, transfer after 90 °, enter the transmitted light mouth F of optical filter box.For being converged to detector chip array 12 by plus lens array 11 after the direct transmission of first via quasi-parallel light the 1st bandpass filter; After being reflected by the 1st bandpass filter for the second road quasi-parallel light, be again totally reflected sheet 4 and reflect, through after the 2nd bandpass filter, by plus lens array 11, converged to detector chip array 12 afterwards; After seeing through the 3rd bandpass filter after being reflected by the 1st bandpass filter, total reflection sheet 4, the 2nd bandpass filter and total reflection sheet 4 successively for Third Road quasi-parallel light, by plus lens array 11, converged to detector chip array 12; After seeing through the 4th bandpass filter after being reflected by the 1st bandpass filter, total reflection sheet 4, the 2nd bandpass filter, total reflection sheet 4, the 3rd bandpass filter and total reflection sheet 4 successively for Si road quasi-parallel light, by plus lens array 11, converged to detector chip array 12.
For up laser signal, after being collimated by collimator lens array 8 after being launched by chip of laser 9, see through optical filter 5, afterwards in optical filter box propagate after in optical filter box light mouth F place's outgoing, enter afterwards the light mouth B of optical circulator 7, by light mouth A outgoing, be collimated afterwards lens 2 and propagate into contact pin 1 afterwards.
For upward signal and the downgoing signal of identical wavelength, the propagation in optical filter box is reversible.
In the present invention, for the structure of its optoelectronic transceiver device of the different numbers of channel, be consistent, difference is only the increase and decrease along with the number of channel, the corresponding increase and decrease of number of each lens correspondingly, each optical filter and circulator, as shown in Figure 18 and Figure 19, its one-piece construction is identical with the structure of the optoelectronic transceiver device of four channels in above-described embodiment.The number of channel is no maximum in theory, but generally accomplishes 16 passages left and right during practical application.
The invention provides a kind of monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device, can realize descending detector signal and up laser signal in the input of same light mouth place, output, can effectively reduce the use of device package and the volume of module, contribute to the miniaturization of device and module and integrated.The present invention can be applicable to CWDM, LWDM wavelength, can be packaged in CFP, CFP2, CFP4, QSFP+, QSFP28 module.
The above embodiment is only the preferred embodiment for absolutely proving that the present invention lifts, and protection scope of the present invention is not limited to this.Being equal to that those skilled in the art do on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device, it is characterized in that, comprise detector receiving unit, laser instrument emitting module, contact pin, collimation lens, glass carrier, total reflection sheet, bandpass filter array, glass partition and optical circulator; The top of described collimation lens, below are respectively arranged with contact pin, glass carrier, the upper surface of described glass carrier, lower surface are pasted with respectively total reflection sheet and bandpass filter array, described glass partition is arranged at glass carrier below, described optical circulator is arranged on the top of glass carrier or a side of glass partition, and the two sides of described glass partition arrange respectively laser instrument emitting module and detector receiving unit.
2. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device according to claim 1, is characterized in that, described laser instrument emitting module comprises collimator lens array and chip of laser array; Described detector receiving unit comprises reflector plate, plus lens array and detector chip array; Described chip of laser array is arranged at described collimator lens array below; Described reflector plate is arranged at described collimator lens array top, and described detector chip array is arranged at plus lens array below.
3. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device according to claim 2, it is characterized in that, on the optical axis of described contact pin in collimation lens, the central shaft of described bandpass filter just arranges described optical circulator light mouth A upward, the optical axis of described optical circulator light mouth B positive alignment collimating lens array down, described chip of laser array is arranged in each lens focus of collimator lens array; Described detector chip array is arranged in each lens back focus of plus lens array.
4. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device according to claim 1, is characterized in that, described optical circulator is arranged on a side of glass partition, and described laser instrument emitting module comprises collimator lens array and chip of laser array; Described detector receiving unit comprises plus lens array and detector chip array; Described chip of laser array is arranged at the below of described collimator lens array; One side of described plus lens array is arranged on the side of glass partition, the outer setting detector chip array of opposite side.
5. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device according to claim 4, it is characterized in that, on the optical axis of described contact pin in collimation lens, the central shaft of described bandpass filter just arranges described optical circulator light mouth A upward, the optical axis of described optical circulator light mouth B positive alignment collimating lens array down, described chip of laser array is arranged in the each lens focus of collimator lens array; Described detector chip array is arranged in the lens back focus of plus lens array, and the optical axis of described plus lens array and the lateral vertical of glass partition.
6. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device according to claim 1, is characterized in that, described optical circulator is arranged at the top of glass carrier; Described laser instrument emitting module comprises collimator lens array and chip of laser array; Described detector receiving unit comprises reflector plate, plus lens array and detector chip array; Described chip of laser array is arranged at described collimator lens array below; Described reflector plate is arranged at glass carrier top, and its reflecting surface is towards the light mouth C of optical circulator, and described detector chip array is arranged at plus lens array below.
7. according to the monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device described in claim 3 or 5 or 6, it is characterized in that, the workplace of described glass carrier comprises upper surface and lower surface, and described upper surface is towards collimation lens, and described lower surface is towards laser instrument emitting module; And described upper surface and lower surface relative level direction tilt.
8. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device according to claim 7, it is characterized in that, described glass partition is vertically arranged at the below of described glass carrier, its vertical surface comprises interconnective transmission region and frosted glass region, and wherein transmission region is positioned at the top in frosted glass region.
9. monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device according to claim 8, is characterized in that, described optical circulator is arranged at described transmission region; Described collimator lens array and chip of laser array are arranged at described frosted glass region; Described reflector plate is arranged at described transmission region; Described plus lens array and detector chip array are arranged at described frosted glass region.
10. according to any described monochromatic light mouth wavelength-division multiplex/demultiplexing optoelectronic transceiver device in claim 9, it is characterized in that, described chip of laser array comprises multiple laser instrument transmitting chips, and described collimator lens array comprises multiple collimation lenses; When described optical circulator is arranged at a side surface of glass partition, the number of described optical circulator is multiple, and the number of optical circulator equates with the number of the chip of laser in described chip of laser array and the collimation lens in collimator lens array, and the equal correspondence in the top of each collimation lens is provided with an optical circulator, the equal correspondence in below of each collimation lens is provided with a laser instrument transmitting chip.
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