CN109917523A - A kind of wavelength interval is less than the 50G simplex optical module of 20nm - Google Patents
A kind of wavelength interval is less than the 50G simplex optical module of 20nm Download PDFInfo
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- CN109917523A CN109917523A CN201910358230.8A CN201910358230A CN109917523A CN 109917523 A CN109917523 A CN 109917523A CN 201910358230 A CN201910358230 A CN 201910358230A CN 109917523 A CN109917523 A CN 109917523A
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Abstract
The invention discloses the 50G simplex optical modules that a kind of wavelength interval is less than 20nm, PWDM module includes double optical fiber head, first self-focus lens, WDM filters film, 45 degree of prisms, second self-focus lens and single fiber head, one end of double optical fiber head is connect with one end of the first self-focus lens, the other end of the first self-focus lens is arranged in WDM filtering film, first self-focus lens and the second self-focus lens are each perpendicular to the bevel edge of 45 degree of prisms, first self-focus lens output fiber is incident in prism by 45 degree of prism bevel edges and is received by projecting after two right-angle side reflections from bevel edge by the second self-focus lens, second self-focus lens one end is connect with the first end of single fiber, one end of double optical fiber head is connected by optical fiber with isolator TOSA, fiber adapter connects double optical fiber head by optical fiber The other end, ROSA pass through optical fiber connect single fiber head the other end.The present invention realizes the function that single fiber bi-directional of the wavelength interval less than 20nm transmits.
Description
Technical field
The present invention relates to a kind of simplex optical module, especially a kind of wavelength interval is less than the 50G single fiber bi-directional of 20nm
Optical module belongs to optical communication field.
Background technique
It is illustrated in figure 4 the principle of the Snigle module of the simplest structure of the prior art, optical signal
Optical module is entered by input/output terminal 12 by optical fiber, in optical module, the first filter plate 13 is in 45 degree of angles, light with optical path
By the first filter plate 13 90 degree of reflections occur for beam, filter using the second filter plate 14, then light beam is received by receiving end 15.
Receiving end 15 uses PD or APD photodiode for a kind of optical detector, is used for photoelectric conversion, optical signal is made to be converted into telecommunications
Number.Transmitting terminal 16 uses laser diode, and the light beam that transmitting terminal 16 issues passes through isolator 17, and the first filter plate 13 is transmitted into
Input/output terminal 12.Isolator can prevent the light of line reflection from entering transmitting terminal 16, improve the stability of signal.
45 ° of incidence structure and similar structures are generally able to satisfy 60nm (15 and 16 wavelength intervals) and above wavelength
The single fiber bi-directional at interval is received and dispatched, and is less than the interval 60nm, can not just be used this structure.CN103605191B describes a kind of 20-
The Snigle structure of the wavelength interval 60nm.The single fiber that currently available technology does not have also wavelength interval to be less than 20nm
The record of the technical solution of bidirectional light receiving and transmitting.
Summary of the invention
Technical problem to be solved by the invention is to provide the 50G single fiber bi-directional optical modes that a kind of wavelength interval is less than 20nm
Block.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of wavelength interval is less than the 50G simplex optical module of 20nm, it is characterised in that: exists comprising module housing and setting
Intracorporal band isolator TOSA, ROSA, PWDM module of module case and fiber adapter, PWDM module include double optical fiber head, first
Self-focus lens, WDM filtering film, 45 degree of prisms, the second self-focus lens and single fiber head, one end of double optical fiber head and first is certainly
One end of collimation lens connects, and the other end of the first self-focus lens, the first self-focus lens and second are arranged in WDM filtering film
Self-focus lens are each perpendicular to the bevel edge of 45 degree of prisms, and the first self-focus lens output fiber is incident to by 45 degree of prism bevel edges
It is received in prism and by being projected after two right-angle side reflections from bevel edge by the second self-focus lens, second self-focus lens one end
It is connect with the first end of single fiber, connects one end of double optical fiber head by optical fiber with isolator TOSA, fiber adapter passes through optical fiber
The other end of double optical fiber head is connected, ROSA connects the other end of single fiber head by optical fiber.
Further, the TO CAN with isolator TOSA is 50G EML TO CAN, typical wavelengths 1295.6nm
Or 1309.1nm.
Further, your TOSA of the band isolator is band refrigeration TO encapsulating structure, built-in thermoelectric refrigerator, thermoelectric cooling
Device makes EML chip controls within the scope of stable temperature Wavelength stabilized in LAN WDM specification limit.
Further, the ROSA uses 50G APD TO CAN, and typical wavelengths are 1309.1nm or 1295.6nm, with
Band isolator TOSA pairing uses.
Further, band the isolator TOSA and ROSA are welded on optical module circuit board by soft board, optical module electricity
Road plate is fixed in module housing, and the setting of optical module circuit board one end is in module housing one end end and module housing should
End end is provided with the interface structure connecting with light module device.
Further, the fiber adapter is fixed on the module housing other end and module housing other end end is arranged
There is LC interface structure.
Further, the module housing other end is provided with a lug.
Further, using QSFP28 packing forms.
Compared with prior art, the present invention having the following advantages that and effect: the present invention using mature band isolator TOSA,
ROSA cooperates PWDM module to realize the function that single fiber bi-directional of the wavelength interval less than 20nm transmits, while specially designed
PWDM module size is small, and SFP28 may be implemented, and a variety of encapsulation such as QSFP28, whole simplex optical module structure is simple, envelope
It is few to fill process, reduces packaging cost.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the 50G simplex optical module of wavelength interval of the invention less than 20nm.
Fig. 2 is a kind of schematic internal view of the 50G simplex optical module of wavelength interval of the invention less than 20nm.
Fig. 3 is the inside schematic diagram of PWDM module of the invention.
Fig. 4 is the schematic diagram of the prior art.
Specific embodiment
Below by embodiment, the present invention is described in further detail, following embodiment be explanation of the invention and
The invention is not limited to following embodiments.
Abbreviation used of the invention is described as follows:
TOSA is the abbreviation of Transmitter Optical Subassembly, and Chinese is light emitting secondary module.It is mainly used in
Electric signal is converted to optical signal (E/O conversion), and performance indicator has optical power, threshold value etc..The TOSA of band isolator TOSA, high speed are needed
Cooperate isolator to use, therefore isolator built in high speed TOSA, can prevent the light of line reflection from entering transmitting terminal, improves letter
Number stability.
ROSA is the abbreviation of Receiver Optical Subassembly, and Chinese is light-receiving secondary module.Main application
Optical signal is converted to electric signal (O/E conversion), and main performance index has sensitivity (Sen) etc..
PWDM is wavelength division multiplexer.
As shown, a kind of wavelength interval of the invention is less than the 50G simplex optical module of 20nm, it include module housing
1 and setting in intracorporal band isolator TOSA2, ROSA3, PWDM module 4 of module case and fiber adapter 5, PWDM module 4 is wrapped
Containing double optical fiber head 6, the first self-focus lens 7, WDM filtering 8,45 degree of prisms 9 of film, the second self-focus lens 10 and single fiber head
11, one end of double optical fiber head 6 is connect with one end of the first self-focus lens 7, and WDM filters film 8 and is arranged in the first self-focus lens 7
The other end, the first self-focus lens 7 and the second self-focus lens 10 are each perpendicular to the bevel edge of 45 degree of prisms 9, the first auto-collimation
7 output fiber of lens is incident in prism by 45 degree of 9 bevel edges of prism and by projecting quilt from bevel edge after two right-angle side reflections
Second self-focus lens 10 receive, and 10 one end of the second self-focus lens is connect with 11 one end of single fiber head, and band isolator TOSA2 is logical
One end of optical fiber connection double optical fiber head 6 is crossed, fiber adapter 5 connects the other end of double optical fiber head 6 by optical fiber, and ROSA3 passes through
The other end of optical fiber connection single fiber head 11.
When use, 1 wavelength channels of λ are issued with isolator TOSA, PWDM mould is entered by one end of double optical fiber head 6
Block 4 is collimated into parallel light output through the first self-focus lens 7, and the directional light of output after WDM filter plate 8 by being reflected back
It goes.1 light of λ of reflection converges to the other end of double optical fiber head 6 by the first self-focus lens 7, passes through optical fiber through its output optical fibre
Adapter 5 exports；2 light of λ inputted through fiber adapter enters PWDM module 4 through one end of double optical fiber head 6, through the first autocollimatic
The parallel light output of the straight collimation of lens 7 horizontally, 2 light of λ of horizontal direction output is transmitted by WDM filter plate 8, then is passed through
After 45 degree of prisms, 9 liang of secondary reflections, occurs to enter the second self-focus lens 10 after the displacement in a vertical direction and converge to monochromatic light
Fine head 11 is exported through its output optical fibre and is received by ROSA.
TO CAN with isolator TOSA2 is 50G EML TO CAN, and typical wavelengths are 1295.6nm or 1309.1nm.Band
Isolator TOSA is band refrigeration TO encapsulating structure, and built-in thermoelectric refrigerator, thermoelectric cooler is EML chip controls in stable temperature
Make in degree range Wavelength stabilized in LAN WDM specification limit.ROSA3 uses 50G APD TO CAN, and typical wavelengths are
1309.1nm or 1295.6nm is used with band isolator TOSA pairing.
Band isolator TOSA and ROSA are welded on optical module circuit board by soft board, and optical module circuit board is fixed at
In module housing, the setting of optical module circuit board one end in module housing one end end and the module housing end end be provided with
The interface structure of light module device connection.
Fiber adapter 5 is fixed on 1 other end of module housing and 1 other end end of module housing is provided with LC interface knot
Structure.1 other end of module housing is provided with a lug.Optical module uses QSFP28 packing forms, is also applicable in SFP,
Other packing forms such as SFP28, CFP, CFP2, CFP4.
The present invention uses the debugging format of NRZ with 50G EML TO CAN used in isolator TOSA, and PAM4 can also be used
Debugging format be modulated into 100G less than or equal to 40km usage scenario under use.25G EML TO CAN can be used in the present invention
Using the debugging format of NRZ, used under the usage scenario of 25G 40km；The debugging format that PAM4 can also be used, in 50G
It is used under the usage scenario of 40km.
The present invention cooperates PWDM module using mature band isolator TOSA, ROSA to realize wavelength interval less than 20nm
Single fiber bi-directional transmission function, while specially designed PWDM module size is small, and SFP28 may be implemented, and QSFP28 etc. is a variety of
Encapsulation, whole simplex optical module structure is simple, and packaging process is few, reduces packaging cost.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention
The technical staff in field can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, only
It should belong to guarantor of the invention without departing from the content or beyond the scope defined by this claim of description of the invention
Protect range.
Claims (8)
1. the 50G simplex optical module that a kind of wavelength interval is less than 20nm, it is characterised in that: include module housing and setting
In intracorporal band isolator TOSA, ROSA, PWDM module of module case and fiber adapter, PWDM module includes double optical fiber head, the
One self-focus lens, WDM filtering film, 45 degree of prisms, the second self-focus lens and single fiber head, one end of double optical fiber head and first
One end of self-focus lens connects, and WDM filtering film is arranged in the other end of the first self-focus lens, the first self-focus lens and the
Two self-focus lens are each perpendicular to the bevel edge of 45 degree of prisms, and the first self-focus lens output fiber is incident by 45 degree of prism bevel edges
It is received in prism and by being projected after two right-angle side reflections from bevel edge by the second self-focus lens, the second self-focus lens one
End is connect with the first end of single fiber, connects one end of double optical fiber head by optical fiber with isolator TOSA, and fiber adapter passes through light
The other end of fibre connection double optical fiber head, ROSA connect the other end of single fiber head by optical fiber.
2. the 50G simplex optical module that a kind of wavelength interval described in accordance with the claim 1 is less than 20nm, it is characterised in that:
The TO CAN with isolator TOSA is 50G EML TO CAN, and typical wavelengths are 1295.6nm or 1309.1nm.
3. a kind of wavelength interval is less than the 50G simplex optical module of 20nm according to claim 2, it is characterised in that:
The band isolator TOSA is band refrigeration TO encapsulating structure, and built-in thermoelectric refrigerator, thermoelectric cooler is EML chip controls steady
Make within the scope of fixed temperature Wavelength stabilized in LAN WDM specification limit.
4. a kind of wavelength interval is less than the 50G simplex optical module of 20nm according to claim 2, it is characterised in that:
The ROSA uses 50G APD TO CAN, and typical wavelengths are 1309.1nm or 1295.6nm, makes with band isolator TOSA pairing
With.
5. the 50G simplex optical module that a kind of wavelength interval described in accordance with the claim 1 is less than 20nm, it is characterised in that:
Band the isolator TOSA and ROSA are welded on optical module circuit board by soft board, and optical module circuit board is fixed at module
In shell, optical module circuit board one end is arranged in module housing one end end and the module housing end end is provided with and optical mode
The interface structure of block device connection.
6. a kind of wavelength interval is less than the 50G simplex optical module of 20nm according to claim 5, it is characterised in that:
The fiber adapter is fixed on the module housing other end and module housing other end end is provided with LC interface structure.
7. a kind of wavelength interval is less than the 50G simplex optical module of 20nm according to claim 6, it is characterised in that:
The module housing other end is provided with a lug.
8. the 50G simplex optical module that a kind of wavelength interval described in accordance with the claim 1 is less than 20nm, it is characterised in that:
Using QSFP28 packing forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910358230.8A CN109917523A (en) | 2019-04-30 | 2019-04-30 | A kind of wavelength interval is less than the 50G simplex optical module of 20nm |
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|---|---|---|---|
| CN201910358230.8A CN109917523A (en) | 2019-04-30 | 2019-04-30 | A kind of wavelength interval is less than the 50G simplex optical module of 20nm |
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| CN109917523A true CN109917523A (en) | 2019-06-21 |
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| CN201910358230.8A Pending CN109917523A (en) | 2019-04-30 | 2019-04-30 | A kind of wavelength interval is less than the 50G simplex optical module of 20nm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162367A (en) * | 2020-09-24 | 2021-01-01 | 易锐光电科技(安徽)有限公司 | Optical module |
| CN113285756A (en) * | 2021-07-22 | 2021-08-20 | 西安奇芯光电科技有限公司 | PLC chip, single-fiber bidirectional optical assembly, optical module and working method |
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| CN113285756A (en) * | 2021-07-22 | 2021-08-20 | 西安奇芯光电科技有限公司 | PLC chip, single-fiber bidirectional optical assembly, optical module and working method |
| CN113285756B (en) * | 2021-07-22 | 2021-10-22 | 西安奇芯光电科技有限公司 | PLC chip, single-fiber bidirectional optical assembly, optical module and working method |
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Effective date of registration: 20220311 Address after: 226400 Zhongtian Industrial Park, Hekou Town, Rudong County, Nantong City, Jiangsu Province Applicant after: ZHONGTIAN BROADBAND TECHNOLOGY Co.,Ltd. Applicant after: Zhongtian Communication Technology Co.,Ltd. Applicant after: WUHAN XINGSI OPTOELECTRONICS TECHNOLOGY CO.,LTD. Address before: 430205 No. 1, floor 4, building 11, phase I, Dingjie modern electromechanical information Incubation Park, No. 219, Guanggu Second Road, Donghu New Technology Development Zone, Wuhan, Hubei Province Applicant before: WUHAN XINGSI OPTOELECTRONICS TECHNOLOGY CO.,LTD. |