CN103268002A - QSFP optical module - Google Patents
QSFP optical module Download PDFInfo
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- CN103268002A CN103268002A CN2013102083428A CN201310208342A CN103268002A CN 103268002 A CN103268002 A CN 103268002A CN 2013102083428 A CN2013102083428 A CN 2013102083428A CN 201310208342 A CN201310208342 A CN 201310208342A CN 103268002 A CN103268002 A CN 103268002A
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Abstract
The invention provides a QSFP optical module which comprises a light beam collimator, a first optical filter, a second optical filter, a third optical filter, a first optical component, a second optical component, a third optical component and a fourth optical component. The first optical filter, the second optical filter and the first optical component are arranged along a ray axis of the light beam collimator in sequence, the first optical filter and the second optical filter are arranged in an inclined mode, the third optical filter is located between the light beam collimator and the first optical filter, the second optical component and the third optical component are arranged on two sides of the third optical filter respectively, and the fourth optical component is located between the first optical filter and the second optical filter. The three optical filters are utilized to conduct filtering on light with four different wavelengths, an input or output optical fiber can be arranged along the ray axis of the light beam collimator, the optical fiber can be arranged in the middle position of an optical path structure, the whole size of the QSFP optical module is reduced, and therefore a small-size packaging requirement can be met.
Description
Technical field
The present invention relates to technical field of optical fiber communication, particularly relate to a kind of QSFP optical module.
Background technology
Along with the requirement to communication bandwidth in the fiber optic communication field is more and more higher, the needs of transmission capacity are constantly increased, traditional technology is difficult to satisfy people to the demand of bandwidth.Light WDM technology is the effective way that solves the bandwidth deficiency, and four-way compact package hot-swappable (Quad Small Form-factor Pluggable is hereinafter to be referred as QSFP) optical module is born to the demand that more highdensity high speed can plug solution in order to satisfy market.Existing QSFP optical module adopts bandpass filter to realize the multiplexing and demultiplexing of four road wavelength usually, U.S. Patent Publication No. US5583683 discloses a kind of QSFP optical module, as shown in Figure 1,1 is a substrate of glass, 2 is bandpass filter, the light of a plurality of wavelength from Optical Fiber Transmission is behind beam collimation device collimation, incide in the substrate of glass, the bandpass filters different by centre wavelength come back reflective, light is " it " font and propagates in substrate of glass, difference admission passage 1 ~ 8, the demultiplexing of realization light path.Though above-mentioned design can both realize wavelength-division multiplex and the demultiplexing of light signal, but its optical fiber of propagating multipath light signal all is partial to a side of whole light path, and not in the middle, cause the overall volume of QSFP optical module bigger, can not satisfy the requirement of small size encapsulation.
Summary of the invention
The embodiment of the invention provides a kind of QSFP optical module, and is bigger with the overall volume that solves QSFP optical module in the prior art, can not satisfy the problem of the requirement of small size encapsulation, and the overall volume that the QSFP optical module is dwindled in realization is to satisfy the requirement of small size encapsulation.
The invention provides a kind of QSFP optical module, comprise: beam collimation device, first optical filter, second optical filter, the 3rd optical filter, first optical assembly, second optical assembly, the 3rd optical assembly and the 4th optical assembly, along being disposed with described first optical filter, described second optical filter and described first optical assembly on the optical axis of described beam collimation device, described first optical filter and described second optical filter are obliquely installed; Described the 3rd optical filter is between described beam collimation device and described first optical filter, the both sides of described the 3rd optical filter are respectively arranged with described second optical assembly and described the 3rd optical assembly, and described the 4th optical assembly is between described first optical filter and described second optical filter; Described beam collimation device emission or receive first wavelength light, second wavelength light, three-wavelength light and the 4th wavelength light, first wavelength light passes described first optical filter and described second optical filter transmits between described beam collimation device and described first optical assembly, second wavelength light is passed described first optical filter and is reflected between described beam collimation device and described the 4th optical assembly through described second optical filter and transmits, three-wavelength light is through the reflection of described first optical filter and pass described the 3rd optical filter and transmit between described beam collimation device and described second optical assembly, and the 4th wavelength light is reflected between described beam collimation device and described the 3rd optical assembly through described first optical filter and described the 3rd optical filter to be transmitted.
Further, the light side of advancing of described first optical assembly, described second optical assembly, described the 3rd optical assembly and described the 4th optical assembly is provided with condenser lens.
Further, the angle between the optical axis of the normal of described first optical filter and described second optical filter and described beam collimation device is 12 °-15 °.
Further, the angle between the optical axis of the normal of described first optical filter and described second optical filter and described beam collimation device is 13.5 °.
Further, described the 3rd optical filter is parallel with described first optical filter.
Further, described first optical filter and described second optical filter are parallel to each other, and described second optical assembly, described the 3rd optical assembly and described the 4th optical assembly are positioned at the same side of the optical axis of described beam collimation device.
Further, described first optical filter and described second optical filter are symmetrical arranged, and described second optical assembly and described the 3rd optical assembly are positioned at a side of the optical axis of described beam collimation device, and described the 4th optical assembly is positioned at the opposite side of the optical axis of described beam collimation device.
Further, described first optical filter, described second optical filter and described the 3rd optical filter are Thin Film Filter.
Further, described first optical assembly, second optical assembly, the 3rd optical assembly and the 4th optical assembly are detector.
Further, described first optical assembly, second optical assembly, the 3rd optical assembly and the 4th optical assembly are laser instrument.
QSFP optical module provided by the invention, realize four different wavelengths of light are carried out filtering by adopting three tablet filters, make the optical fiber that inputs or outputs can be along the optical axis setting of beam collimation device, realize that optical fiber can be in the centre position of light channel structure, and each optical assembly also is that direction distributes on the optical axis of beam collimation device, can more effectively dwindle the overall volume of QSFP optical module, to satisfy the requirement of small size encapsulation.In addition, adopt above-mentioned light path design, can guarantee that the transmission range of different wavelengths of light is basic identical, guarantee the performance index basically identical of different wavelengths of light, homogeneity is better.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the light path principle figure of existing QSFP optical module;
Fig. 2 is the light path principle figure one of QSFP optical module embodiment of the present invention;
Fig. 3 is the light path principle figure two of QSFP optical module embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 2, present embodiment QSFP optical module, comprise: beam collimation device 1, first optical filter 2, second optical filter 3, the 3rd optical filter 4, first optical assembly 5, second optical assembly 6, the 3rd optical assembly 7 and the 4th optical assembly 8, be obliquely installed along being disposed with first optical filter 2, second optical filter 3 and first optical assembly, 5, the first optical filters 2 and second optical filter 3 on the optical axis of beam collimation device 1; The 3rd optical filter 4 filters between 2 at beam collimation device 1 and first, and the both sides of the 3rd optical filter 4 are respectively arranged with second optical assembly 6 and the 3rd optical assembly 7, the four optical assemblies 8 between first optical filter 2 and second optical filter 3; Beam collimation device 1 emission or receive first wavelength light, second wavelength light, three-wavelength light and the 4th wavelength light, first wavelength light passes first optical filter 2 and second optical filter 3 transmits between beam collimation device 1 and first optical assembly 5, second wavelength light is passed first optical filter 2 and is reflected in transmission between beam collimation device 1 and the 4th optical assembly 8 through second optical filter 3, three-wavelength light reflects and passes the 3rd optical filter 4 through first optical filter 2 and transmits between beam collimation device 1 and second optical assembly 6, and the 4th wavelength light is reflected in transmission between beam collimation device 1 and the 3rd optical assembly 7 through first optical filter 2 and the 3rd optical filter 4.
Particularly, present embodiment QSFP optical module adopts three optical filters to screen different wavelengths of light, first optical filter 2, second optical filter 3 and first optical assembly 5 are arranged along the optical axis of beam collimation device 1, and the 3rd optical filter 4, second optical assembly 6, the 3rd optical assembly 7 and the 4th optical assembly 8 are distributed in a side of the optical axis of beam collimation device 1, can make optical fiber along the optical axis setting of beam collimation device 1 on the one hand, realize that optical fiber can be in the centre position of light channel structure; Optical element distributes in the optical axis both sides of beam collimation device on the other hand, and the overall volume that can more effectively dwindle the QSFP optical module is to satisfy the requirement of small size encapsulation.Wherein, the dotted line among Fig. 1 and Fig. 2 is the propagation circuit of light, and optical assembly is detector or laser instrument.When optical assembly was detector, light transmits from beam collimation device 1 to optical assembly then realized the wavelength-division demultiplexing, and when optical assembly was laser instrument, 1 transmission then realized wavelength-division multiplex to light from optical assembly to the beam collimation device.Preferably, can be by adjusting the distance between optical filter and the optical assembly, the light stroke of first wavelength light, second wavelength light, three-wavelength light and the 4th wavelength light is equated, basic identical with the transmission range of guaranteeing different wavelengths of light, guarantee the performance index basically identical of different wavelengths of light, homogeneity is better.In addition, the light side of advancing of first optical assembly 5, second optical assembly 6, the 3rd optical assembly 7 and the 4th optical assembly 8 is provided with condenser lens 9, and first optical filter 2, second optical filter 3 and the 3rd optical filter 4 are Thin Film Filter, and the cost of Thin Film Filter is lower, can effectively reduce manufacturing cost.
Further, the angle between the normal of first optical filter 2 and second optical filter 3 and the optical axis of beam collimation device 1 is 12 °-15 °, and preferred, the angle between the normal of first optical filter 2 and second optical filter 3 and the optical axis of beam collimation device 1 is 13.5 °.Concrete, by choosing suitable angle of inclination, can guarantee that optical filter can see through or reflection the different wavelengths of light selection, guarantees that optical filter has light selectivity preferably.
Further, for the layout that makes present embodiment QSFP optical module more reasonable, the 3rd optical filter 4 is parallel with first optical filter 2, as shown in Figure 1, first optical filter 2 and second optical filter 3 are parallel to each other, and second optical assembly 6, the 3rd optical assembly 7 and the 4th optical assembly 8 are positioned at the same side of the optical axis of beam collimation device 1.Preferably, for fear of phase mutual interference between the 3rd optical assembly 7 and the 4th optical assembly 8, as shown in Figure 2, first optical filter 2 and second optical filter 3 are symmetrical arranged, second optical assembly 6 and the 3rd optical assembly 7 are positioned at a side of the optical axis of beam collimation device 1, and the 4th optical assembly 8 is positioned at the opposite side of the optical axis of beam collimation device 1.
QSFP optical module provided by the invention, realize four different wavelengths of light are carried out filtering by adopting three tablet filters, make the optical fiber that inputs or outputs can be along the optical axis setting of beam collimation device, realize that optical fiber can be in the centre position of light channel structure, and each optical assembly also is that direction distributes on the optical axis of beam collimation device, can more effectively dwindle the overall volume of QSFP optical module, to satisfy the requirement of small size encapsulation.In addition, adopt above-mentioned light path design, can guarantee that the transmission range of different wavelengths of light is basic identical, guarantee the performance index basically identical of different wavelengths of light, homogeneity is better.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. QSFP optical module, it is characterized in that, comprise: beam collimation device, first optical filter, second optical filter, the 3rd optical filter, first optical assembly, second optical assembly, the 3rd optical assembly and the 4th optical assembly, along being disposed with described first optical filter, described second optical filter and described first optical assembly on the optical axis of described beam collimation device, described first optical filter and described second optical filter are obliquely installed; Described the 3rd optical filter is between described beam collimation device and described first optical filter, the both sides of described the 3rd optical filter are respectively arranged with described second optical assembly and described the 3rd optical assembly, and described the 4th optical assembly is between described first optical filter and described second optical filter; Described beam collimation device emission or receive first wavelength light, second wavelength light, three-wavelength light and the 4th wavelength light, first wavelength light passes described first optical filter and described second optical filter transmits between described beam collimation device and described first optical assembly, second wavelength light is passed described first optical filter and is reflected between described beam collimation device and described the 4th optical assembly through described second optical filter and transmits, three-wavelength light is through the reflection of described first optical filter and pass described the 3rd optical filter and transmit between described beam collimation device and described second optical assembly, and the 4th wavelength light is reflected between described beam collimation device and described the 3rd optical assembly through described first optical filter and described the 3rd optical filter to be transmitted.
2. QSFP optical module according to claim 1 is characterized in that, the light side of advancing of described first optical assembly, described second optical assembly, described the 3rd optical assembly and described the 4th optical assembly is provided with condenser lens.
3. QSFP optical module according to claim 1 is characterized in that, the angle between the normal of described first optical filter and described second optical filter and the optical axis of described beam collimation device is 12 °-15 °.
4. QSFP optical module according to claim 3 is characterized in that, the angle between the normal of described first optical filter and described second optical filter and the optical axis of described beam collimation device is 13.5 °.
5. QSFP optical module according to claim 1 is characterized in that, described the 3rd optical filter is parallel with described first optical filter.
6. QSFP optical module according to claim 5, it is characterized in that, described first optical filter and described second optical filter are parallel to each other, and described second optical assembly, described the 3rd optical assembly and described the 4th optical assembly are positioned at the same side of the optical axis of described beam collimation device.
7. QSFP optical module according to claim 5, it is characterized in that, described first optical filter and described second optical filter are symmetrical arranged, described second optical assembly and described the 3rd optical assembly are positioned at a side of the optical axis of described beam collimation device, and described the 4th optical assembly is positioned at the opposite side of the optical axis of described beam collimation device.
8. QSFP optical module according to claim 1 is characterized in that, described first optical filter, described second optical filter and described the 3rd optical filter are Thin Film Filter.
9. QSFP optical module according to claim 1 is characterized in that, described first optical assembly, second optical assembly, the 3rd optical assembly and the 4th optical assembly are detector.
10. QSFP optical module according to claim 1 is characterized in that, described first optical assembly, second optical assembly, the 3rd optical assembly and the 4th optical assembly are laser instrument.
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| CN2013102083428A CN103268002A (en) | 2013-05-30 | 2013-05-30 | QSFP optical module |
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| CN2013102083428A CN103268002A (en) | 2013-05-30 | 2013-05-30 | QSFP optical module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116474A (en) * | 2018-02-08 | 2019-01-01 | 珠海迈时光电科技有限公司 | Wavelength-division multiplex/demultiplexing fiber coupling mould group and its optical device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5625403A (en) * | 1993-11-05 | 1997-04-29 | Orbotech Ltd. | Method and apparatus for recording on optically-sensitive media |
| US7184621B1 (en) * | 2003-12-21 | 2007-02-27 | Lijun Zhu | Multi-wavelength transmitter optical sub assembly with integrated multiplexer |
-
2013
- 2013-05-30 CN CN2013102083428A patent/CN103268002A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5625403A (en) * | 1993-11-05 | 1997-04-29 | Orbotech Ltd. | Method and apparatus for recording on optically-sensitive media |
| US7184621B1 (en) * | 2003-12-21 | 2007-02-27 | Lijun Zhu | Multi-wavelength transmitter optical sub assembly with integrated multiplexer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116474A (en) * | 2018-02-08 | 2019-01-01 | 珠海迈时光电科技有限公司 | Wavelength-division multiplex/demultiplexing fiber coupling mould group and its optical device |
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Application publication date: 20130828 |