CN210982820U - SFP28-SR optical module and optical transmission device - Google Patents
SFP28-SR optical module and optical transmission device Download PDFInfo
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- CN210982820U CN210982820U CN201922244891.6U CN201922244891U CN210982820U CN 210982820 U CN210982820 U CN 210982820U CN 201922244891 U CN201922244891 U CN 201922244891U CN 210982820 U CN210982820 U CN 210982820U
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Abstract
The utility model discloses a SFP28-SR optical module and optical transmission device, wherein SFP28-SR optical module, including the integrated drive chip of receiving and dispatching, TOSA, ROSA, master control set, host computer end electrical interface and circuit board, the integrated drive chip of receiving and dispatching, master control set and host computer end electrical interface are established on the circuit board, the integrated clock data recovery that has of the integrated drive chip of receiving and dispatching, VCSE L drive and L A amplifier's function is pasted on the circuit board through SMT, the electrical signal input of host computer end electrical interface input is to the integrated drive chip of receiving and dispatching, the integrated drive chip of receiving and dispatching carries out reconverting into drive current signal and input to TOSA after the data recovery to this electrical signal, TOSA sends optical signal to optic fibre, ROSA converts the optical signal of optic fibre input into current signal, and convert voltage signal through inside TIA and enlarge input to the integrated drive chip of receiving and dispatching, the integrated drive chip is amplified voltage signal and is input to the host computer end through host computer end electrical interface after the data recovery.
Description
Technical Field
The utility model relates to an optical communication technical field especially relates to a SFP28-SR optical module and optical transmission device.
Background
Aiming at a connection scheme within 100-300 m in a large-scale data center, three schemes exist in the current market, one scheme is that the quality of signals selected from an SFP28-SR 100m optical module is good, although the scheme is low in cost, the requirement on production process control is high, the selection proportion is unstable, and inventory cost management is not facilitated, the scheme is changed to a receiving COB and a non-airtight transmitting scheme on the basis of an SFP 28-L R10 km scheme, belongs to a 10km commercial grade low-cost scheme, is applied to connection within 300m, and is still relatively expensive in cost, the DFB laser transmitted on the basis of the second scheme is replaced by an FP laser, the scheme meets the transmission requirement of 300m, but is still relatively expensive in price, and the 25G FP laser on the current market is relatively few in resources.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a SFP28-SR optical module is favorable to realizing the 300m communication interconnection of low cost and high reliability.
It is another object of the present invention to provide an optical transmission device, which is favorable for realizing low cost and high reliability of 300m communication interconnection.
In order to achieve the purpose, the utility model provides a SFP28-SR optical module, including receiving and dispatching integrated driver chip, TOSA, ROSA, master control set, host computer end electrical interface and circuit board, receiving and dispatching integrated driver chip, master control set and host computer end electrical interface are established on the circuit board, receiving and dispatching integrated driver chip integration has clock data recovery, VCSE L drive and L A amplifier's function and through SMT paste dress on the circuit board, the electrical signal input of host computer end electrical interface input to receiving and dispatching integrated driver chip, receiving and dispatching integrated driver chip carries out data recovery to this electrical signal after reconverting drive current signal and input to TOSA, TOSA sends optical signal to optic fibre, ROSA converts the optical signal of optic fibre input into voltage signal and inputs to receiving and dispatching integrated driver chip, receiving and dispatching integrated driver chip amplifies voltage signal and passes through host computer end electrical interface input to host computer end after data recovery.
Preferably, the ROSA is internally packaged with a transimpedance amplifier and a photodiode.
Preferably, the TOSA internally encapsulates a VCSE L laser and a backlight diode.
Preferably, the TOSA and the ROSA adopt plastic packaging pipe caps.
Preferably, the host-side electrical interface is a gold finger.
To achieve the above-mentioned another object, the present invention provides an optical transmission device, which includes the SFP28-SR optical module.
Compared with the prior art, the utility model discloses SFP28-SR optical module carries out optical signal's output and input through TOSA and ROSA that adopt the TO structure, can effectively solve current SFP28-SR COB mode coupling inefficiency, the not good problem of 300m effect, effectively expands SFP28-SR optical module's transmission distance. The utility model discloses can guarantee the sensitivity of light signal emission performance and receipt, the TO structure also can effectively improve COB's reliability simultaneously TO be favorable TO realizing the high reliability ground and realize 300m signal transmission.
Drawings
Fig. 1 is a schematic structural diagram of an SFP28-SR optical module according to an embodiment of the present invention.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
Referring to fig. 1, the present invention discloses an SFP28-SR optical module 100, which includes a transceiver integrated driving chip 1, a TOSA2 (transmitter optical subassembly), a ROSA3 (receiver optical subassembly), a main control device 4, a host electrical interface 5 and a circuit board 6, wherein the transceiver integrated driving chip 1, the main control device 4 and the host electrical interface 5 are disposed on the circuit board 6, the transceiver integrated driving chip 1 integrates functions of clock data recovery, VCSE L drive and L a amplifier and is mounted on the circuit board 6 by attaching, an electrical signal input by the host electrical interface 5 is input to the transceiver integrated driving chip 1, the transceiver integrated driving chip 1 performs data recovery on the electrical signal and then converts the electrical signal into a driving current signal and inputs the driving current signal to the TOSA2, the TOSA2 sends an optical signal to an optical fiber, the ROSA3 converts an optical signal input by the optical fiber into a voltage signal and inputs the voltage signal to the transceiver integrated driving chip 1, and the transceiver integrated driving chip 1 amplifies the voltage signal and recovers the data and then inputs the electrical signal to the host electrical interface 6 through the host electrical interface.
Specifically, the ROSA3 is internally packaged with a transimpedance amplifier and a photodiode, so that the RF performance is excellent, compared with a COB scheme, the TO structure coupling efficiency is much higher, and the sensitivity is obviously improved, the ROSA3 is further packaged with an optical fiber interface 32 connected with an optical fiber, and specifically, the TOSA2 is internally packaged with a VCSE L laser and a backlight diode, and is further packaged with an optical fiber interface 22 connected with an optical fiber.
Additionally, because the utility model discloses a multimode scheme for the optical chip low power dissipation, the utility model discloses a TOSA2 and ROSA3 adopt the plastic envelope pipe cap, further reduce cost.
Specifically, the host-side electrical interface 5 is a gold finger formed on the circuit board 6.
In addition, the utility model provides an optical transmission device, including SFP28-SR optical module 100 as described above.
TO sum up, the utility model discloses SFP28-SR optical module 100's receiving and dispatching integrated drive chip 1 pastes the dress on circuit board 6 through SMT, carries out optical signal's output and input through TOSA2 and ROSA3 that adopt the TO structure, can effectively expand current SFP28-SR OM 4100 m's optical module's transmission distance TO 300 m. The utility model discloses can improve product sensitivity, be favorable to strengthening the whole reliability of product again to be favorable to low-cost and realize 300m signal transmission with high reliability. And the utility model discloses a receiving and dispatching integrated driver chip 1 replaces the transmission driver chip and the receiving chip who set up alone, is favorable to promoting the utility model discloses SFP28-SR optical module 100's integrated level.
The above disclosure is only a preferred embodiment of the present invention, and the scope of the claims of the present invention should not be limited thereby, and all the equivalent changes made in the claims of the present invention are intended to be covered by the present invention.
Claims (6)
1. An SFP28-SR optical module is characterized by comprising a transceiving integrated drive chip, a TOSA (transmitter optical subassembly), a ROSA (receiver optical subassembly), a main control device, a host end electrical interface and a circuit board, wherein the transceiving integrated drive chip, the main control device and the host end electrical interface are arranged on the circuit board, the transceiving integrated drive chip integrates functions of clock data recovery, VCSE (voltage regulated oscillator) L drive and a L A amplifier and is attached to the circuit board through SMT (surface mount technology), an electrical signal input by the host end electrical interface is input to the transceiving integrated drive chip, the transceiving integrated drive chip converts the electrical signal into a drive current signal after performing data recovery and inputs the drive current signal to the TOSA, the TOSA sends an optical signal to an optical fiber, the ROSA converts an optical signal input by the optical fiber into a voltage signal and inputs the voltage signal to the transceiving integrated drive chip, and the transceiving integrated drive chip amplifies the voltage signal and restores the data and inputs the voltage signal to the host end through the host end electrical interface.
2. The SFP28-SR optical module of claim 1, wherein the ROSA is internally packaged with a transimpedance amplifier and a photodiode.
3. The SFP28-SR optical module of claim 1, wherein the TOSA internally encapsulates a VCSE L laser and a backlight diode.
4. The SFP28-SR optical module of claim 1, wherein the TOSA and ROSA employ plastic molded caps.
5. The SFP28-SR optical module of claim 1, wherein the host-side electrical interface is a gold finger.
6. An optical transmission apparatus comprising the SFP28-SR optical module according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244891.6U CN210982820U (en) | 2019-12-13 | 2019-12-13 | SFP28-SR optical module and optical transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244891.6U CN210982820U (en) | 2019-12-13 | 2019-12-13 | SFP28-SR optical module and optical transmission device |
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| CN210982820U true CN210982820U (en) | 2020-07-10 |
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| CN201922244891.6U Active CN210982820U (en) | 2019-12-13 | 2019-12-13 | SFP28-SR optical module and optical transmission device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355526A (en) * | 2022-02-17 | 2022-04-15 | Nano科技(北京)有限公司 | Integrated transmit-receive packaged optical component |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355526A (en) * | 2022-02-17 | 2022-04-15 | Nano科技(北京)有限公司 | Integrated transmit-receive packaged optical component |
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