CN205826904U - A kind of wavelength multiplexing Optical devices - Google Patents
A kind of wavelength multiplexing Optical devices Download PDFInfo
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- CN205826904U CN205826904U CN201620597706.5U CN201620597706U CN205826904U CN 205826904 U CN205826904 U CN 205826904U CN 201620597706 U CN201620597706 U CN 201620597706U CN 205826904 U CN205826904 U CN 205826904U
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Abstract
This utility model provides a kind of wavelength multiplexing Optical devices, including TFF device (1), polarization beam splitter prism device (2), described TFF device includes four road bands and leads to diaphragm group (4) and two highly reflecting films sheets (5), and two panels thin film (5) is respectively arranged on the first optical channel that TFF device (1) exports, the 3rd optical channel；Polarization beam splitter prism device (2) includes 1/2 slide (6), 45 ° of hypotenuse prisms (7), rhombic prism (8), 45 ° of inclined-planes of described rhombic prism (8) and the inclined-plane of 45 ° of hypotenuse prisms (7) coincide and arrange and be correspondingly arranged in the second optical channel that TFF device (1) exports respectively, in 4th optical channel light path, 45 ° of hypotenuse prisms (7), polarizing beam splitting film (9) is set between rhombic prism (8) coincidence face, described 1/2 slide (6) is positioned on the vertical incidence face of 45 ° of hypotenuse prisms (7) or rhombic prism (8).This utility model device reduces the band logical manufacture difficulty of diaphragm, cost.
Description
Technical field
This utility model relates to the optical assembly device of a kind of wavelength multiplexing, particularly relates to the wavelength that wavelength interval is shorter
Multiplexing, this utility model belongs to the communications field.
Background technology
In Modern Communication System, along with the capacity of system transfers is increasing, to wavelength multiplexing in package of optical device
Application also gets more and more, and the channel spacing for wavelength multiplexing is the most shorter and shorter.High speed especially for short-distance and medium-distance transmission
In optical device, the demand of CWDM and LAN-WDM wavelength multiplexing is increasing, and channel spacing is from 20nm to the LAN-WDM's of CWDM
4.5nm.In the application that this wavelength channel interval is shorter and shorter, traditional TFF Block wavelength multiplexing, each TFF film
Sheet is limited to this passage Insertion Loss and adjacent channel isolation index request, there is the situation of intermediate zone Bandwidth-Constrained, then causes
The pass band width of TFF Block can not the wavelength bandwidth of good match chip of laser.Another PBS wavelength multiplexing device is then
Need orthogonal two kinds of polarization converted are become a kind of polarization state, light path exists the multiplex loss of 3dB.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, for current high-speed communication system
System, the wavelength interval needing multiplexing is shorter and shorter, and needs the distance transmitted more and more longer, it is provided that the light of a kind of wavelength multiplexing
Learn assembly apparatus, reduce the band merit requirement to TFF diaphragm, there is filter with low insertion loss simultaneously.
This utility model be the technical scheme is that
A kind of wavelength multiplexing Optical devices, including TFF device and polarization beam splitter prism device, described TFF device includes
Band logical diaphragm group, glass supporter, two highly reflecting films sheets, the passband of the logical diaphragm of each band in the logical diaphragm group of band and rejection zone
Want incident and reflection wavelength corresponding respectively with it；Two panels thin film is respectively arranged at TFF device the first optical channel and
On three optical channels；Polarization beam splitter prism device includes 1/2 slide, 45 ° of hypotenuse prisms, rhombic prism, polarizing beam splitting films, described tiltedly
45 ° of inclined-planes of square glass prism and the inclined-plane of 45 ° of hypotenuse prisms coincide arrange and correspond respectively to TFF device output the second light lead to
In road and the 4th optical channel light path, between 45 ° of hypotenuse prisms, rhombic prism coincidence faces, it is provided with polarizing beam splitting film, described 1/2 glass
Sheet is positioned on the vertical incidence face of 45 ° of hypotenuse prisms or rhombic prism.
Described TFF device uses TFF glass blocks device.
Polarizing beam splitting film be arranged on 45 ° of inclined-planes of the rhombic prism of above-mentioned coincidence and 45 ° of hypotenuse prisms 45 ° of inclined-planes it
Between.
The transmission position of described polarizing beam splitting film, reflection position coincide.
Described 1/2 slide is glued on the vertical incidence face of 45 ° of hypotenuse prisms or rhombic prism.
Described band leads to the band of diaphragm group and leads to diaphragm and thin film is adhered on glass supporter.
Described band leads to the band of diaphragm group and leads to diaphragm and the direct plated film of thin film on glass supporter.
Described glass supporter is hollow for being set to.
This utility model device has the advantage that
1, in this utility model optical assembly device, TFF block is by non-adjacent wavelength X 1 and λ 3, and λ 2 and λ 4 is carried out
Multiplexing, the intermediate zone band merit of diaphragm logical to band can be relaxed 1 times relative to traditional TFF block, be reduced the logical diaphragm of band
Manufacture difficulty and cost；
2, in this utility model optical assembly device, four road wavelength are divided into the carrying out of two two-way independences by TFF block
Multiplexing, reduces the order of reflection in multiplexing, has relatively low Insertion Loss.
Accompanying drawing explanation
Fig. 1 is the light path schematic diagram of this utility model optical assembly device embodiment 1；
Fig. 2 is the light path schematic diagram of this utility model optical assembly device embodiment 2；
Fig. 3 is the light path schematic diagram of this utility model optical assembly device embodiment 3；
Wherein:
1:TFF device；2: polarization beam splitter prism device；
3: glass supporter；4: the logical diaphragm group of band；
5: thin film；6:1/2 slide；
7:45 ° of hypotenuse prism；8: rhombic prism；
9: polarizing beam splitting film (PBS Film)；
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, one of the present utility model is combined based on TFF glass blocks (block) and PBS
Wavelength multiplexing devices and methods therefor is described in detail.
A kind of optical assembly device for wavelength multiplexing includes TFF device 1 and 2 liang of big portions of polarization beam splitter prism device
Point.TFF device 1 comprises band logical diaphragm group 4,3, two thin films 5 of glass supporter.The logical diaphragm group 4 of band is by four independent bands
Logical diaphragm is constituted, and the passband of the logical diaphragm of each band wants incident and reflection wavelength corresponding with rejection zone with it.Polarization beam splitting
Prism apparatus 2 includes 6,45 ° of hypotenuse prisms 7 of 1/2 slide, rhombic prism 8 and polarizing beam splitting film 9 (PBS Film).Described oblique side
45 ° of inclined-planes of prism 8 and the inclined-plane of 45 ° of hypotenuse prisms 7 are oppositely arranged, and described polarizing beam splitting film 9 is arranged at rhombic prism 8
45 ° of inclined-planes, or described polarizing beam splitting film 9 is arranged on the hypotenuse of 45 ° of hypotenuse prisms 7.This utility model TFF device 1 uses
TFF block device.Two panels thin film 5 is respectively arranged on TFF device 1 first optical channel and the 3rd optical channel；Described tiltedly
8,45 ° of hypotenuse prisms 7 of square glass prism correspond respectively in the second optical channel and the 4th optical channel light path of TFF device 1 output.
Four logical diaphragm arrangement of independent band of the logical diaphragm group 4 of band are in the side of glass supporter 3, respectively with four tunnel optical wavelength
Four input optical channels of the corresponding composition of input position, described band leads to diaphragm makes the optical wavelength being in passband be transmitted, locate
Optical wavelength outside passband is reflected, and four tunnel optical wavelength lead to diaphragm transmission by four independent bands of the logical diaphragm group 4 of band respectively
Enter glass supporter 3；Two panels thin film 5 is arranged at the opposite side of glass supporter 3, respectively with the two-way light in four tunnel optical wavelength
Wavelength Exit positions on glass supporter 3 is corresponding, will reflect back into glass supporter 3 from the optical wavelength of glass supporter 3 outgoing
In.
Specifically, two panels thin film 5 is respectively arranged on the first optical channel and the 3rd optical channel, will lead to from the first light
The optical wavelength that road is propagated is reflected back in glass supporter 3 and reflexes to the band corresponding with the second optical channel and leads to diaphragm position so that
The optical wavelength that first optical channel is propagated is led to diaphragm position at the band that the second optical channel is corresponding and is reflected, so that the first light leads to
The lightwave circuit that the lightwave circuit road that road is propagated and the second optical channel are propagated coincides；The optical wavelength will propagated from the 3rd optical channel
It is reflected back in glass supporter 3 and reflexes to the band corresponding with the 4th optical channel and lead to diaphragm position so that the 3rd optical channel is propagated
Optical wavelength lead to diaphragm position at the band that the 4th optical channel is corresponding and reflected, so that the light glistening light of waves that the 3rd optical channel is propagated
The lightwave circuit that Lu Yu tetra-optical channel is propagated coincides.
Rhombic prism 8 has 45 ° of inclined-planes of inclined-plane, two parallel 45 °, one of them 45 ° of inclined-plane and 45 ° of hypotenuse prisms 7
Coinciding, another 45 ° of inclined-planes are preferably provided with high anti-reflectance coating, and polarizing beam splitting film (PBS Film) 9 is arranged on the oblique of above-mentioned coincidence
Between 45 ° of inclined-planes and 45 ° of inclined-planes of 45 ° of hypotenuse prisms 7 of square glass prism 8.1/2 slide is arranged at vertically entering of 45 ° of hypotenuse prisms 7
Penetrate on face or on the vertical incidence face of rhombic prism 8.First and second optical channel optical wavelength of multiplexing and third and fourth light of multiplexing
Passage optical wavelength is incident, from 45 ° of hypotenuses from the vertical incidence face of the vertical incidence face of 45 ° of hypotenuse prisms 7 and rhombic prism 8 respectively
The optical wavelength of the vertical incidence face incidence of prism 7 is transmitted into rhombic prism 8 from polarizing beam splitting film (PBS Film) 9, from tiltedly side
The incident optical wavelength in the vertical incidence face of prism 8 at 45 ° of inclined-planes of rhombic prism 8, be reflected back toward rhombic prism 8 after again by
Polarizing beam splitting film (PBS Film) 9 reflects, and after reflecting be transmitted through the light wave appearance of polarizing beam splitting film (PBS Film) 9
Overlap.
When realizing the multiplexing of 4 road wavelength based on TFF block and PBS combination, TFF block only need to complete two independences
The multiplexing of two-way wavelength, the most meaningful, non-adjacent wavelength X 1 and λ 3 is multiplexed into a road λ 1 by TFF block device
λ 3, is multiplexed into road λ 2 λ 4 by λ 2 and λ 4, and above-mentioned λ 1 λ 3 and λ 2 λ 4 is multiplexed into road λ 1 λ 2 λ 3 by polarization beam splitter prism device 2 again
λ4.Because along with adjacent wavelength interval is shorter and shorter, the transfer zone bandwidth of the logical diaphragm of band is more and more limited, then causes it to lead to
Band bandwidth is the most limited.And the wavelength of chip of laser has certain distribution, when pass band width is limited to a certain degree, it is considered to swash
The bandwidth surplus of the logical diaphragm of band after light device chip wave spread is more and more less the most negative, cause bigger coupling loss and
Extinction ratio during impact modulation work.For solving this problem, need to spend bigger original making that become to meet index request
The logical diaphragm group 4 of band.And using optical assembly device and the method thereof of wavelength multiplexing of the present utility model, TFF block device 1 is first
By non-adjacent wavelength X 1 and λ 3, λ 2 and λ 4 carries out multiplexing, and the intermediate zone band merit of diaphragm logical to band is relative to traditional TFF
Block can relax 1 times, reduces the manufacture difficulty of the logical diaphragm of band and cost.Four road wavelength are divided into two by TFF block simultaneously
Individual two-way independence carry out multiplexing, reduce the order of reflection in multiplexing, there is relatively low light path Insertion Loss.
As it is shown in figure 1, wavelength X 1, λ 2, λ 3, λ 4 are usually the directional light after collimation, with λ 1, λ 3, λ 2, the order of λ 4
The band that first, second, third, fourth optical channel entering TFF device 1 incides its wavelength corresponding at an angle leads to diaphragm
After band in group 4 leads to diaphragm, it is transmitted into transmission in glass supporter 3, continues in being reflected back toward glass supporter 3 at thin film 5
Resuming defeated, then the band in non-adjacent passage λ 3 correspondence leads to be reflected back toward at diaphragm in glass supporter 3 and continues transmission, finally exists
The corresponding output window output glass supporter 3 of TFF block device 1.
Wavelength X 3 incides after the band in its logical diaphragm group 4 of corresponding band leads to diaphragm with the incident angle identical with wavelength X 1
Being transmitted into transmission in glass supporter 3, the corresponding output window at TFF block device 1 exports glass supporter 3.Wavelength X 3 folding
Inject the position of glass supporter 3 to lead to diaphragm reflection position with wavelength X 1 at the band that λ 3 passage is corresponding and coincide, to complete wavelength X
1 and the two-way light of wavelength X 3 be multiplexed into road light λ 1 λ 3.
Same principle based on non-adjacent passage λ 1 and λ 3 wavelength multiplexing, the wavelength completing non-adjacent passage λ 2 and λ 4 is multiple
With.After multiplexing, wavelength channel is respectively λ 1 λ 3 and λ 2 λ 4 two-by-two.
λ 1 λ 3 vertical incidence enters into rhombic prism 8, and after 45 ° of inclined-plane total reflections of rhombic prism 8, optical path direction changes
90 ° of rhombic prisms 8 that turn back transmit, light path side after another 45 ° of inclined-planes complete reflection by polarizing beam splitting film (PBSFilm) 9
Transmitting to changing-90 ° of rhombic prisms 8 that turn back, finally the output window at polarization beam splitter prism device 2 completes output.
λ 2 λ 4 completes 90 ° of rotations of polarization state after impinging perpendicularly on 1/2 slide 6, vertical incidence enters 45 ° of hypotenuse prisms 7,
After the hypotenuse of 45 ° of hypotenuse prisms 7 completes transmission by polarizing beam splitting film (PBS Film) 9, enter rhombic prism 8 transmit, finally
Output window at polarization beam splitter prism device 2 completes output.
Above-mentioned λ 2 λ 4 at the transmission position of polarizing beam splitting film (PBS Film) 9 and λ 1 λ 3 at polarizing beam splitting film (PBS Film)
The reflection position of 9 coincides, and synthesizes road light λ 1 λ 2 λ 3 λ 4 completing two-way light λ 1 λ 3 and λ 2 λ 4.
Second embodiment of this utility model, the part that the glass supporter 3 in above-mentioned TFF block device walks light path is permissible
Hollow out, as in figure 2 it is shown, i.e. glass supporter 3 can be hollow.
The 3rd embodiment of this utility model, the band in above-mentioned TFF block device leads to diaphragm group 4 and thin film 5 can
Be direct plated film on glass supporter 3, as shown in Figure 3.
1/2 above-mentioned slide 6 can be placed in the light path of λ 1, λ 3, corresponding 1/2 slide 6 and the vertical incidence of rhombic prism 8
Face carries out gluing.1/2 above-mentioned slide 6 can also be placed in the light path of λ 2, λ 4, and described 1/2 slide 6 is glued at 45 ° of hypotenuse ribs
On the vertical incidence face of mirror 7.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that, common for this area
For technical staff, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (8)
1. wavelength multiplexing Optical devices, it is characterised in that: include TFF device (1) and polarization beam splitter prism device (2), institute
State TFF device (1) and include band logical diaphragm group (4), glass supporter (3), two highly reflecting films sheets (5), in the logical diaphragm group (4) of band
The passband of each logical diaphragm of band want wavelength that is incident and that reflect corresponding respectively with it with rejection zone；Two panels thin film
(5) it is respectively arranged on TFF device (1) first optical channel and the 3rd optical channel；Polarization beam splitter prism device (2) includes 1/2 glass
Sheet (6), 45 ° of hypotenuse prisms (7), rhombic prism (8), polarizing beam splitting films (9), 45 ° of inclined-planes of described rhombic prism (8) and 45 °
The inclined-plane of hypotenuse prism (7) coincides and arranges and correspond respectively to the second optical channel and the 4th optical channel that TFF device (1) exports
In light path, between 45 ° of hypotenuse prisms (7), rhombic prism (8) coincidence faces, it is provided with polarizing beam splitting film (9), described 1/2 slide (6)
It is positioned on the vertical incidence face of 45 ° of hypotenuse prisms (7) or rhombic prism (8).
A kind of wavelength multiplexing Optical devices, it is characterised in that: described TFF device (1) uses TFF
Glass blocks device.
A kind of wavelength multiplexing Optical devices, it is characterised in that polarizing beam splitting film (9) is arranged on above-mentioned
Between 45 ° of inclined-planes and 45 ° of inclined-planes of 45 ° of hypotenuse prisms (7) of the rhombic prism (8) overlapped.
A kind of wavelength multiplexing Optical devices, it is characterised in that: described polarizing beam splitting film (9) saturating
Penetrate position, reflection position coincides.
A kind of wavelength multiplexing Optical devices the most according to claim 1, it is characterised in that: described 1/2 slide (6) is glued at
On the vertical incidence face of 45 ° of hypotenuse prisms (7) or rhombic prism (8).
A kind of wavelength multiplexing Optical devices the most according to claim 1, it is characterised in that: described band leads to diaphragm group (4)
The logical diaphragm of band and thin film (5) are adhered on glass supporter (3).
A kind of wavelength multiplexing Optical devices the most according to claim 1, it is characterised in that: described band leads to diaphragm group (4)
The logical diaphragm of band and thin film (5) directly plated film are on glass supporter (3).
A kind of wavelength multiplexing Optical devices the most according to claim 1, it is characterised in that: described glass supporter (3) is for setting
It is set to hollow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597706.5U CN205826904U (en) | 2016-06-17 | 2016-06-17 | A kind of wavelength multiplexing Optical devices |
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| CN201620597706.5U CN205826904U (en) | 2016-06-17 | 2016-06-17 | A kind of wavelength multiplexing Optical devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110785686A (en) * | 2017-08-10 | 2020-02-11 | 卢克斯特拉有限公司 | Free space CWDM MUX/DEMUX for integration with silicon photonics platforms |
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- 2016-06-17 CN CN201620597706.5U patent/CN205826904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110785686A (en) * | 2017-08-10 | 2020-02-11 | 卢克斯特拉有限公司 | Free space CWDM MUX/DEMUX for integration with silicon photonics platforms |
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