CN203133335U - Four-port OLT optical transmitting/receiving integrated module - Google Patents
Four-port OLT optical transmitting/receiving integrated module Download PDFInfo
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- CN203133335U CN203133335U CN 201320113184 CN201320113184U CN203133335U CN 203133335 U CN203133335 U CN 203133335U CN 201320113184 CN201320113184 CN 201320113184 CN 201320113184 U CN201320113184 U CN 201320113184U CN 203133335 U CN203133335 U CN 203133335U
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Abstract
The utility model provides a four-port OLT optical transmitting/receiving integrated module. The four-port OLT optical transmitting/receiving integrated module includes the following components of: an optical transmitting device used for transmitting downlink first optical signals; an optical receiving device which is used for receiving uplink second optical signals and comprises an APD optical receiving assembly, a limiting amplifier, a boost circuit, a current mirror circuit and a receiving optical signal strength indication circuit; a wave-combining wave-splitting planar optical waveguide device; and a multi-optical fiber plugging connector. The wave-combining wave-splitting planar optical waveguide device divides the downlink first optical signals into four paths from one path, and the four paths of the downlink first optical signals are outputted by the multi-optical fiber plugging connector, and each outputted path of optical signals is transmitted to an ONU end in a broadcast downlink manner; the multi-optical fiber plugging connector inputs four time-division-multiplexed uplink paths of second optical signals from the ONU end; and the four inputted time-division-multiplexed uplink paths of second optical signals are coupled, received and converted into electrical signals through the wave-combining wave-splitting planar optical waveguide device and the APD optical receiving assembly, wherein the electrical signals are amplified and outputted by the limiting amplifier. Because SFP mechanical size packaging with the same standard is adopted, the capability of four-OLT bi-directional transmission optical signals can be realized.
Description
Technical field
The utility model relates to optical line terminal OLT (Optical Line Terminal, abbreviation OLT) with integrated module of optical transceiver SFP (Small Form Pluggable, be called for short SFP), relate in particular to the four port OLT integrated modules of optical transceiver that GPON (gigabit passive optical network) system uses.
Background technology
In recent years, passive optical network PON (Passive Opitcal Network) technology was owing to the superiority of high access bandwidth was rapidly developed, especially the GPON technology.In the PON system, optical line terminal OLT 1 is in local side as shown in Figure 1, optical network unit (Optical Network Unit is called for short ONU)) be in client, the OLT1 end adopts burst mode to receive ONU end uplink optical signal, and its operation wavelength is 1310mn; The OLT1 end comes downwards to the light signal of each ONU end and then launches its operation wavelength 1490nm by a 1XN optical branching device broadcast type continuously.It is the single fiber transmitted in both directions assembly BOSA(Bi-direction Optical Sub-assembly that is made of laser assembly, optical fiber receive module, single fiber and wavelength division multiplexer that the light signal of the OLT1 integrated module of optical transceiver of the prior art is handled) finish, laser assembly is launched a downlink optical signal, optical fiber receive module receives uplink optical signal, descending, last light signal is respectively by after wavelength division multiplexer transmission, the reflection, by the two-way output of single fiber, input light signal separately.Its output terminal of this structure OLT1 integrated module of optical transceiver is supported 32 ONU terminal users at most, and the network capacity extension inserts more ONU user if desired, can only be by increasing more OLT1 modules.
The utility model content
The utility model provides the four port OLT integrated modules of optical transceiver of a kind of network capacity extension convenience, compact conformation.
For reaching above goal of the invention, the utility model provides a kind of four port OLT integrated modules of optical transceiver, comprising: a light emitting devices is used for descending first light signal of emission; One optical pickup apparatus is used for receiving up second light signal, and this device comprises: an APD optical fiber receive module, a limiting amplifier, a booster circuit, a current mirror circuit and a receiving optical signals intensity indicating circuit; One closes wave separater planar optical waveguide device and the umbilical connector of optical fiber more than one; Close wave separater planar optical waveguide device and the coupling of described APD optical fiber receive module and receive and be converted to electric signal and amplified by limiting amplifier and export through described from time-multiplexed four tunnel up second light signals of ONU end by the input of described many optical fiber umbilical connector, booster circuit provides the high direct voltage biasing for the APD optical fiber receive module, and current mirror circuit is used for photocurrent mirror image to receiving optical signals intensity indicating circuit is detected burst luminous signal intensity.
Described light emitting devices, comprise: one first laser driver drives one first laser assembly and launches descending first light signal, and the described wave separater planar optical waveguide device that closes after one minute four the tunnel is exported described descending first light signal by described many optical fiber umbilical connector.
Described light emitting devices comprises that also one second laser driver drives one second laser assembly and launches descending the 3rd light signal; One 1X2 fan out buffer is used for a pair of differential signal is converted to two-way, input to described first, second laser driver respectively, close the wave separater planar optical waveguide device and will be exported by many optical fiber umbilical connector behind descending the first, the 3rd light signal one-to-two road respectively.
Described many optical fiber umbilical connector is a MPO or a MTP connector.
Described optical pickup apparatus, also comprise a data buffer and a burst packets testing circuit, described data buffer is isolated described limiting amplifier output signal to the influence of mainboard, and whether described burst packets testing circuit receives light signal for detection of the APD optical fiber receive module.
Described descending the first, the 3rd wavelength of optical signal is the 1490nm wave band, and described up second wavelength of optical signal is the 1310nm wave band.
Because the four port OLT integrated modules of optical transceiver of said structure, employing one is closed and is divided four road light signals outwards to export by many optical fiber umbilical connector after the wave separater planar optical waveguide device is handled downlink optical signal, each road light signal after the output sends downlink optical signal by broadcast type to the ONU end again, simultaneously, four road uplink optical signals by the input of many optical fiber umbilical connector are converted to electric signal output through closing wave separater planar optical waveguide device processing back by the reception of APD optical fiber receive module.In the technique scheme owing to utilize SFP integrated module of optical transceiver standard mechanical package dimension that the function of 4 conventional OLT integrated modules of optical transceiver is provided, be equivalent to original four times of functions, operator can save equipment plate card and rack resource when arranging the network capacity extension, simple, the relatively low advantage of integrated cost of networking wiring.
Description of drawings
Fig. 1 represents to adopt the PON schematic network structure of common OLT module establishment;
Fig. 2 represents the utility model four port OLT integrated modules of optical transceiver first embodiment frame principle figure;
Fig. 3 represents the utility model four port OLT integrated modules of optical transceiver second embodiment frame principle figure;
Fig. 4 presentation graphs 2 and four port OLT integrated module of optical transceiver PON shown in Figure 3 use synoptic diagram.
Embodiment
Describe the utility model most preferred embodiment in detail below in conjunction with accompanying drawing.
The four port OLT integrated modules of optical transceiver as shown in Figure 2, comprise: a light emitting devices 10 is used for descending first light signal of emission, this device can adopt two kinds of schemes, first kind of situation, comprise: one first laser driver 11 drives descending first light signal of one first laser assembly, 12 emissions, when the power of laser driver satisfied requiring of a certain size at this moment, one just passable; Second kind of situation when adopting the laser driver of common power size, needs also to comprise that one second laser driver 13 drives descending the 3rd light signal of one second laser assembly, 14 emissions; One 1X2 fan out buffer 15 is used for a pair of differential signal is converted to two-way, inputs to first, second laser driver 11,13 respectively.One optical pickup apparatus 20 is used for receiving up second light signal, and this device comprises: an APD optical fiber receive module 21, a limiting amplifier 22, a booster circuit 23, a current mirror circuit 24 and a receiving optical signals intensity indicating circuit 25; One closes wave separater planar optical waveguide device 30 and the umbilical connector of optical fiber more than one 40, and this connector can adopt MPO or a MTP connector of a standard.When light emitting devices 10 adopts first kind of scheme to be a laser instrument, close wave separater planar optical waveguide device 30 descending first light signal is exported by many optical fiber umbilical connector 40 after one minute four the tunnel; When light emitting devices 10 adopts second kind of scheme to be two laser instruments, closing wave separater planar optical waveguide device 30 will be exported by many optical fiber umbilical connector 40 behind descending the first, the 3rd light signal one-to-two road respectively, utilize the power of two laser instruments to superpose to remedy the optical path loss that the light splitting of PLC planar optical waveguide brings, make all standard compliant optical power signals of four tunnel outputs.Simultaneously, the time division multiplex four tunnel up second light signal ECDC wave separater planar optical waveguide devices of being imported from the ONU end by many optical fiber umbilical connector 40 30 are converted to electric signal by limiting amplifier 22 amplification outputs with the 21 coupling receptions of APD optical fiber receive module, booster circuit 23 provides the high direct voltage biasing for APD optical fiber receive module 21, and current mirror circuit 24 is used for photocurrent mirror image to receiving optical signals intensity indicating circuit 25 is detected burst luminous signal intensity.As shown in Figure 3, optical pickup apparatus 20, can also comprise a data buffer 50 and a burst packets testing circuit 60, data buffer 50 is isolated limiting amplifier 22 output signals to the influence of mainboard, also play the effect of data shaping, whether burst packets testing circuit 60 receives light signal for detection of APD optical fiber receive module 21.The descending first or the 3rd wavelength of optical signal is the 1490nm wave band, up second wavelength of optical signal is the 1310nm wave band, certainly also can use laser assembly and the APD optical fiber receive module of other wave band according to practical application, close the wavelength of wave separater planar optical waveguide device 30 simultaneously and also will do corresponding adjustment, such as also being 1577nm and 1270nm.Adopt any light emitting devices 10 no matter be, all can adopt the broadcast type downlink transfer to hold to ONU respectively by four road light signals of many optical fiber umbilical connector 40 output, therefore, adopt four port OLT integrated modules of optical transceiver, can insert nearly 128 ONU network users, as shown in Figure 4.The utility model is equivalent to original four times splitting ratio because the encapsulation of the same standard SFP of employing mechanical dimension provides the ability of 4 OLT transmitted in both directions light signals, and operator can save equipment plate card and rack resource when disposing the networking, and integrated cost is relatively low.
Claims (6)
1. a port OLT integrated module of optical transceiver is characterized in that, comprising: a light emitting devices (10) is used for descending first light signal of emission; One optical pickup apparatus (20) is used for receiving up second light signal, and this device comprises: an APD optical fiber receive module (21), a limiting amplifier (22), a booster circuit (23), a current mirror circuit (24) and a receiving optical signals intensity indicating circuit (25); One closes wave separater planar optical waveguide device (30) and the umbilical connector of optical fiber more than one (40); Time-multiplexed four tunnel up second light signals of being imported from the ONU end by described many optical fiber umbilical connector (40) are converted to electric signal by limiting amplifier (22) amplification output through the described wave separater planar optical waveguide device (30) that closes with described APD optical fiber receive module (21) coupling reception, booster circuit (23) provides the high direct voltage biasing for APD optical fiber receive module (21), and current mirror circuit (24) is used for photocurrent mirror image to receiving optical signals intensity indicating circuit (25) is detected burst luminous signal intensity.
2. the four port OLT integrated modules of optical transceiver according to claim 1, it is characterized in that, described light emitting devices (10), comprise: one first laser driver (11) drives descending first light signal of one first laser assembly (12) emission, and the described wave separater planar optical waveguide device (30) that closes after one minute four the tunnel is exported described descending first light signal by described many optical fiber umbilical connector (40).
3. the four port OLT integrated modules of optical transceiver according to claim 2 is characterized in that, described light emitting devices (10) comprises that also one second laser driver (13) drives descending the 3rd light signal of one second laser assembly (14) emission; One 1X2 fan out buffer (15) is used for a pair of differential signal is converted to two-way, input to described first, second laser driver (11,13) respectively, close wave separater planar optical waveguide device (30) and will be exported by many optical fiber umbilical connector (40) behind descending the first, the 3rd light signal one-to-two road respectively.
4. the four port OLT integrated modules of optical transceiver according to claim 3 is characterized in that, described many optical fiber umbilical connector (40) is a MPO or a MTP connector.
5. the four port OLT integrated modules of optical transceiver according to claim 4, it is characterized in that, described optical pickup apparatus (20), also comprise a data buffer (50) and a burst packets testing circuit (60), described data buffer (50) is isolated described limiting amplifier (22) output signal to the influence of mainboard, and whether described burst packets testing circuit (60) receives light signal for detection of APD optical fiber receive module (21).
6. according to claim 1,2,3, the 4 or 5 described four port OLT integrated modules of optical transceiver, it is characterized in that described descending the first, the 3rd wavelength of optical signal is the 1490nm wave band, described up second wavelength of optical signal is the 1310nm wave band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113184 CN203133335U (en) | 2013-03-13 | 2013-03-13 | Four-port OLT optical transmitting/receiving integrated module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113184 CN203133335U (en) | 2013-03-13 | 2013-03-13 | Four-port OLT optical transmitting/receiving integrated module |
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| CN203133335U true CN203133335U (en) | 2013-08-14 |
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| CN 201320113184 Expired - Lifetime CN203133335U (en) | 2013-03-13 | 2013-03-13 | Four-port OLT optical transmitting/receiving integrated module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049318A (en) * | 2013-03-13 | 2014-09-17 | 深圳新飞通光电子技术有限公司 | Four-port OLT optical transmit-receive integrated module |
| CN104601246A (en) * | 2015-01-13 | 2015-05-06 | 珠海保税区光联通讯技术有限公司 | Multi-channel combiner light emitter |
| US20210231880A1 (en) * | 2013-04-15 | 2021-07-29 | Lumenis Ltd. | Dual port optical switching apparatus |
| CN113395614A (en) * | 2021-06-03 | 2021-09-14 | 博为科技有限公司 | Passive optical network system and data transmission method |
| CN114647030A (en) * | 2022-05-19 | 2022-06-21 | 深圳市迅特通信技术股份有限公司 | Silicon-based photoelectronic receiving and transmitting integrated chip for PON OLT system |
| CN114667051A (en) * | 2022-05-25 | 2022-06-24 | 绍兴中科通信设备有限公司 | Anti-interference optical module |
-
2013
- 2013-03-13 CN CN 201320113184 patent/CN203133335U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049318A (en) * | 2013-03-13 | 2014-09-17 | 深圳新飞通光电子技术有限公司 | Four-port OLT optical transmit-receive integrated module |
| US20210231880A1 (en) * | 2013-04-15 | 2021-07-29 | Lumenis Ltd. | Dual port optical switching apparatus |
| CN104601246A (en) * | 2015-01-13 | 2015-05-06 | 珠海保税区光联通讯技术有限公司 | Multi-channel combiner light emitter |
| CN113395614A (en) * | 2021-06-03 | 2021-09-14 | 博为科技有限公司 | Passive optical network system and data transmission method |
| CN114647030A (en) * | 2022-05-19 | 2022-06-21 | 深圳市迅特通信技术股份有限公司 | Silicon-based photoelectronic receiving and transmitting integrated chip for PON OLT system |
| CN114647030B (en) * | 2022-05-19 | 2022-09-09 | 深圳市迅特通信技术股份有限公司 | Silicon-based photoelectronic receiving and transmitting integrated chip for PON OLT system |
| CN114667051A (en) * | 2022-05-25 | 2022-06-24 | 绍兴中科通信设备有限公司 | Anti-interference optical module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170523 Address after: 518101, Guangdong, Shenzhen Baoan District Xian two road COFCO Business Park 2, 1503 Patentee after: SHENZHEN APAT OPTO-ELECTRONICS COMPONENTS Co.,Ltd. Address before: South South technology twelve road 518057 in Guangdong Province, Shenzhen high tech Industrial Park, No. 8 Frestech. Patentee before: NEOPHOTONICS Corp. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170531 Address after: 518101, Guangdong, Shenzhen Baoan District Xian two road COFCO Business Park 2, 1503 Patentee after: SHENZHEN APAT OPTO-ELECTRONICS COMPONENTS Co.,Ltd. Address before: South South technology twelve road 518057 in Guangdong Province, Shenzhen high tech Industrial Park, No. 8 Frestech. Patentee before: NEOPHOTONICS Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |