CN211123385U - Tail fiber assembly and electro-optical modulator comprising same - Google Patents
Tail fiber assembly and electro-optical modulator comprising same Download PDFInfo
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- CN211123385U CN211123385U CN201922368245.0U CN201922368245U CN211123385U CN 211123385 U CN211123385 U CN 211123385U CN 201922368245 U CN201922368245 U CN 201922368245U CN 211123385 U CN211123385 U CN 211123385U
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Abstract
The utility model discloses a tail optical fiber subassembly reaches electro-optical modulator including it, the tail optical fiber subassembly includes: the tapered lens optical fiber comprises a first end and a second end which are oppositely arranged, and the first end is connected with the chip; the first protective sleeve is sleeved and fixed on the tapered lens optical fiber, and the first end can extend to the outside of the first protective sleeve; the first metal tube is opposite to the first protective sleeve and is arranged at intervals, the first metal tube is sleeved and fixed on the tapered lens optical fiber, and the second end of the first metal tube penetrates through the first metal tube; and the second protective sleeve is sleeved on the tapered lens optical fiber and is abutted against one end of the first protective sleeve far away from the first metal pipe, and the second end can extend to the outside of the second protective sleeve. The utility model provides a tail optical fiber subassembly reaches electro-optical modulator including it, tail optical fiber subassembly has good gas tightness, can reduce the coupling loss.
Description
Technical Field
The present invention relates to an electro-optical modulator, and more particularly, to a lithium niobate thin film pigtail assembly that relates to hermetic package and an electro-optical modulator including the same.
Background
The electro-optical modulator is used as a core device of the modern optical communication industry, and can convert an electric signal into an optical signal, so that the optical signal can be transmitted in an optical fiber at a long distance and a high speed. Among them, the electro-optical modulator based on lithium niobate crystal is the most mature external modulator at present due to high bandwidth, adjustable chirp and small nonlinear distortion.
However, the electro-optical modulator based on the lithium niobate crystal has the characteristics of high half-wave voltage, large volume, sensitivity to polarization, large insertion loss and the like, so that the application of the electro-optical modulator in an optical communication system, particularly a coherent optical communication system, is greatly restricted. In recent years, due to the great breakthrough of the processing technology of the lithium niobate microstructure, research on the lithium niobate thin-film electro-optical modulator becomes a focus of attention, and a plurality of documents are reported about the preparation of the lithium niobate thin-film chip waveguide. Due to the high refractive index difference and the film thickness in the order of micrometers, the optical waveguide can confine light in a micro-region in the order of micrometers, causing the light to propagate therein in a guided mode. The lithium niobate thin film has small size, is coupled with a common optical fiber, is easy to cause larger coupling loss due to the mismatch of a mode field, and is not beneficial to the popularization and the application of a thin film device.
Therefore, there is a need for a pigtail assembly and an electro-optic modulator comprising the same that solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a pigtail assembly and an electro-optical modulator including the pigtail assembly, so as to solve the above problems.
Based on above-mentioned purpose the utility model provides a pair of tail optical fiber subassembly, include:
the tapered lens optical fiber comprises a first end and a second end which are oppositely arranged, and the first end is connected with the chip;
the first protective sleeve is sleeved and fixed on the tapered lens optical fiber, and the first end can extend to the outside of the first protective sleeve;
the first metal tube is opposite to the first protective sleeve and is arranged at intervals, the first metal tube is sleeved and fixed on the tapered lens optical fiber, and the second end of the first metal tube penetrates through the first metal tube;
and the second protective sleeve is sleeved on the tapered lens optical fiber and is abutted against one end of the first protective sleeve far away from the first metal pipe, and the second end can extend to the outside of the second protective sleeve.
Preferably, the method further comprises the following steps: the second metal pipe is sleeved on the conical lens optical fiber and arranged between the first metal pipe and the second protective sleeve, and two opposite ends of the second metal pipe are respectively abutted against the first metal pipe and the second protective sleeve; at least one groove is arranged on the outer pipe wall of the second metal pipe.
Preferably, the method further comprises the following steps: the relative both ends of first protective sheath all are provided with first glue film, first protective sheath is kept away from first tubular metal resonator one end terminal surface first glue film is used for bonding conical lens optic fibre with the chip, first protective sheath is close to first tubular metal resonator one end terminal surface first glue film to extend in the first protective sheath, and be used for bonding conical lens optic fibre with first protective sheath.
Preferably, the method further comprises the following steps: the welding layer is arranged on the end face, close to the first protective sleeve, of the first metal tube, and the welding layer is used for welding and fixing the conical lens optical fiber and the first metal tube.
The utility model also provides an electro-optical modulator, include:
a housing;
a chip connected inside the housing;
two sets of as above-mentioned tail optical fiber assembly, two sets of tail optical fiber assembly sets up respectively the relative both ends of chip, and all with the chip is connected, two sets of the free end of tail optical fiber assembly all runs through the shell extends to the external environment in.
Preferably, the housing comprises a housing provided with an opening and a cover plate for sealing the opening, an accommodating cavity communicated with the opening is arranged in the housing, and through holes communicated with the external environment are arranged on the cavity walls on two opposite sides of the accommodating cavity.
Preferably, the casing includes the bottom plate and follows the lateral wall that extends along the circumference of bottom plate, the free end of lateral wall encloses to close and forms the opening, the apron with the terminal surface of the free end of lateral wall is connected, two the through-hole is in relative setting on the lateral wall, and all with the holding chamber intercommunication.
Preferably, a supporting table is arranged on the bottom plate and used for supporting the chip, and a second adhesive layer is arranged between the supporting table and the chip.
Preferably, the method further comprises the following steps: and the reinforcing block and the tail fiber assembly are positioned in the shell, are connected at one end part and are superposed on the chip.
In addition, preferably, be provided with the sealing ring in the through-hole, the sealing ring cover is established and is fixed on the tail optical fiber subassembly, be provided with the third glue film on sealing ring and the through-hole is close to external environment one end terminal surface.
From the foregoing, it can be seen that the present invention provides a pigtail assembly and an electro-optical modulator including the same, which have the following advantages compared with the prior art: the structure is simple, and each protective sleeve and the metal tube provide good protection effect for the tapered lens optical fiber and have good air tightness; the coupling loss can be reduced and the optimal coupling efficiency can be obtained by adopting the coupling of the tapered lens optical fiber and the waveguide.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic diagram of a pigtail assembly employed in an embodiment of the invention.
FIG. 2 is a partial schematic view of an electro-optic modulator including the pigtail assembly shown in FIG. 1.
Wherein the reference numbers:
10: a housing; 11: a chip; 12: a reinforcing block; 13: a first glue layer;
14: a first protective sheath; 15: a tapered lensed fiber; 16: a first metal tube;
17: a seal ring; 18: a second metal tube; 19: a second protective cover;
20: a second solder layer; 21: a first solder layer; 22: a second adhesive layer; 23: and (7) a cover plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings. The terms "inner" and "outer" are used to refer to directions toward and away from, respectively, the geometric center of a particular component.
Fig. 1 is a schematic diagram of a pigtail assembly employed in an embodiment of the invention. As shown in fig. 1, the pigtail assembly comprises: tapered lensed fiber 15, first protective sheath 14, first metal tube 16, and second protective sheath 19.
The tapered lensed fiber 15 includes first and second ends disposed opposite one another, the first end being coupled to the chip 11 (shown in FIG. 2);
the first protective sheath 14 is fixed on the tapered lens optical fiber 15 in a sleeving manner, and the first end of the first protective sheath can extend to the outside of the first protective sheath 14;
the first metal tube 16 is opposite to the first protective sleeve 14 and is arranged at an interval, the first metal tube 16 is sleeved and fixed on the tapered lens optical fiber 15, and the second end of the first metal tube 16 penetrates through the first metal tube;
the second protection sleeve 19 is disposed on the tapered lensed fiber 15 and abuts an end of the first metal tube 16 away from the first protection sleeve 14, and a second end of the second protection sleeve 19 can extend to an outside of the second protection sleeve 19.
The first protective sleeve 14, the first metal tube 16 and the second protective sleeve 19 are sequentially sleeved and connected on the tapered lens optical fiber 15 from the first end, the first protective sleeve 14 and the first metal tube 16 have a certain distance, the first metal tube 16 and the second protective sleeve 19 can be abutted and arranged, the tapered lens optical fiber 15 and the first protective sleeve 14 are relatively fixed, and the tapered lens optical fiber 15 and the first metal tube 16 are relatively fixed. By adopting the tail fiber structure, the structure is simple, and each protective sleeve and the metal tube provide good protection effect for the tapered lens optical fiber and have good air tightness; the coupling loss can be reduced and the optimal coupling efficiency can be obtained by adopting the coupling of the tapered lens optical fiber and the waveguide.
In the present embodiment, the tapered lensed fiber 15 is a fiber that is lensed by machining the end face of the fiber to a desired taper angle and core radius to better match the mode field of the waveguide. Typical dimensions of the cone lens rays are: the cone angle is 0.70-0.75 DEG, the radius of the fiber core is 4.9-5.0 mu m, and the radius of curvature of the lens is 13.0-14.0 mu m.
In this embodiment, the first protective sheath 14 may be made of a transparent material, such as, but not limited to, a glass capillary tube. The inner diameter of the first protective sheath 14 is not smaller than the outer diameter of the tapered lensed fiber 15, such as 1.05 to 1.10 times.
In the present embodiment, the first metal tube 16 may be made of a common metal such as nickel, and a metal layer is usually plated on the surface of the metal tube to prevent oxidation of the metal. For example, the first metal tube 16 includes, but is not limited to, a gold plated nickel tube. The inner diameter of the first metal tube 16 is slightly larger than the outer diameter of the tapered lensed fiber 15, for example, 1.1 to 1.5 times.
In this embodiment, the second protective sheath 19 may be a conventional optical sleeve, such as but not limited to a loose tube sleeve. The inner diameter of the second protective sheath 19 is larger than the outer diameter of the tapered lensed fiber 15, e.g., 1.5 to 2 times. The tapered lensed fiber 15, the first protective sheath 14, the first metal tube 16, and the second protective sheath 19 are all concentrically disposed.
Preferably, the pigtail assembly further comprises: the second metal tube 18, the second metal tube 18 is set on the tapered lens optical fiber 15, the second metal tube 18 is set between the first metal tube 16 and the second protective sheath 19, and the two opposite ends of the second metal tube 18 are respectively connected with the first metal tube 16 and the second protective sheath 19, at least one groove is set on the outer wall of the second metal tube 18. The second metal tube 18 is used for protecting light at the joint of the first metal tube 16 and the second protective sleeve 19, so that the optical fiber at the joint is not easy to bend, and the optical fiber can be effectively prevented from being broken. The grooves provide a space for the second metal tube 18 to deform to cushion the force and prevent light from affecting the inner wall.
In the present embodiment, the second metal tube 18 can be made of common metal such as nickel, for example, the second metal tube 18 includes but is not limited to nickel tube. The opposite ends of the nickel tube are respectively abutted against the first metal tube 16 and the second protective sleeve 19, and the tapered lens optical fiber 15, the first protective sleeve 14, the first metal tube 16, the second metal tube 18 and the second protective sleeve 19 are all concentrically arranged.
The number of the grooves is multiple, in this embodiment, three grooves are sequentially arranged on the outer pipe wall of the second metal pipe 18 at intervals along the length direction, and the grooves of each groove have the same depth and do not penetrate through the inner wall of the second metal pipe; the groove width of each groove is the same, for example, the groove width of the second metal tube 18 increases from the first metal tube 16 to the second protective sleeve 19 and then decreases. The width of the groove in the middle is the largest, the width of the groove at the tail end is the second largest, and the width of the groove at the head end is the smallest.
In this embodiment, the outer diameter of first metal tube 16 is equal to the outer diameter of second protective sleeve 19, the outer diameter of second metal tube 18 is slightly larger, and the outer diameter of first protective sleeve 14 is greater than or equal to the outer diameter of second metal tube 18.
Preferably, the pigtail assembly further comprises: the opposite two ends of the first protective sleeve 14 are provided with first glue layers 13, the first glue layer 13, away from the end face of one end of the first metal tube 16, of the first protective sleeve 14 is used for bonding the tapered lens optical fiber 15 and the chip 11, and the first glue layer 13, close to the end face of one end of the first metal tube 16, of the first protective sleeve 14 extends into the first protective sleeve 14 and is used for bonding the tapered lens optical fiber 15 and the first protective sleeve 14. By adopting the first adhesive layer 13, the conical lens optical fiber 15 and the first protective sleeve 14 are relatively fixed, and meanwhile, the connection strength of the conical lens optical fiber 15 and the chip 11 is improved. Further, the first adhesive layer 13 seals the first protective cover 14, and the sealing property can be improved.
In this embodiment, the first adhesive layer 13 includes, but is not limited to, an ultraviolet adhesive, and the ultraviolet adhesive has a fast bonding speed and a good bonding effect.
In this embodiment, the first glue layer 13 may be provided in multiple segments, and the multiple segments of the first glue layer 13 are all disposed on the tapered lens fiber 15 and spaced apart along the length direction of the first metal tube 16.
Preferably, the pigtail assembly further comprises: and a welding layer 20, wherein the welding layer 20 is arranged on the end surface of the first metal tube 16 close to the first protective sleeve 14, and the welding layer 20 is used for welding and fixing the tapered lens optical fiber 15 and the first metal tube 16. The connection stability of the tapered lensed fiber 15 and the first metal tube 16 can be improved by providing the solder layer 20. The welding layer 20 and the second metal tube 18 seal the first metal tube 16, thereby improving the sealing property.
In the present embodiment, the solder layer 20 includes, but is not limited to, glass solder, which fuses the first metal tube 16 and the tapered lensed fiber 15 together to improve the connection stability.
The making and using of the pigtail assembly is further described below.
The pigtail assembly comprises: first glue film 13, first protective sheath 14, conical lens light 15, first metal tube 16, second metal tube 18, second protective sheath 19 and welded layer 21, utilize welded layer 21 to fuse first metal tube 16 and conical lens optic fibre 15 together, the free end of first metal tube 16 sets up second protective sheath 19 and protects, the junction of first metal tube 16 and second protective sheath 19 sets up second metal tube 18 and protects, it is fixed through ultraviolet glue 13 to pass through first protective sheath 14 with conical lens optic fibre 15. After the tail fiber assembly is manufactured, the chip 11 and the tail fiber assembly are coupled and fixed through the first glue layer 13.
FIG. 2 is a partial schematic view of an electro-optic modulator including the pigtail assembly shown in FIG. 1. As shown in fig. 2, the electro-optic modulator includes: a housing, a chip 11 and two sets of pigtail assemblies.
The housing may provide a hermetic seal for the chip 11 and pigtail assembly located within the housing;
the chip 11 is connected inside the shell; chip 11 includes but is not limited to a lithium niobate thin film chip;
two sets of tail optical fiber components set up respectively at chip 11's relative both ends, and all are connected with chip 11, and the free end of two sets of tail optical fiber components all runs through the shell and extends to the external environment in.
Two sets of tail optical fiber components are respectively connected with the two opposite ends of the chip 11 to form an integrated structure, the integrated structure is placed in the shell, the free end of the tail optical fiber component extends out of the shell, and the shell provides a sealing effect for the integrated structure in the period. The tail fiber assembly is simple in structure, each protective sleeve and the metal tube provide good protection effect for the tapered lens optical fiber, and the shell provides good air tightness for the tail fiber assembly and the chip; the coupling loss can be reduced and the optimal coupling efficiency can be obtained by adopting the coupling of the tapered lens optical fiber and the waveguide.
Preferably, the housing includes a housing 10 provided with an opening and a cover plate 23 for sealing the opening, an accommodating chamber communicated with the opening is provided in the housing 10, and through holes (not identified) communicated with the external environment are provided on chamber walls of two opposite sides of the accommodating chamber. The housing 10 provides a sufficient accommodation space for the pigtail assembly, the second end of which protrudes from the through hole to the outside of the housing 10, and the chip 11. The shell has a simple structure and is convenient to disassemble and assemble.
Preferably, the housing 10 includes a bottom plate and a side wall extending from a circumferential edge of the bottom plate, a free end of the side wall is enclosed to form an opening, the cover plate 23 is connected with an end face of the free end of the side wall, and the two through holes are oppositely disposed on the side wall and are both communicated with the accommodating cavity. The housing 10 has a simple structure, is convenient to assemble with the cover plate 23, and has good air tightness.
In this embodiment, the through-hole is provided with the extension section that extends to keeping away from holding chamber one side, and the extension section has increased the area of contact of through-hole with the tail optical fiber subassembly, has improved joint strength.
In this embodiment, the cover plate 23 is detachably connected to the housing 10, such as by plugging, clipping, and the like.
Preferably, a support table (not shown) is disposed on the bottom plate, the support table is used for supporting the chip 11, and a second adhesive layer 22 is disposed between the support table and the chip 11. The supporting platform provides a certain supporting height for the chip 11, and reduces the assembly difficulty of the chip 11 and the tail fiber assembly. By adding the second adhesive layer 22, the connection stability of the chip 11 and the supporting table can be increased, and the connection stability of the chip 11 and the tail fiber assembly is prevented from being affected.
In this embodiment, the support platform is disposed in the middle of the bottom plate, and the length of the support platform may be slightly smaller than the length of the chip 11. The width of the support table may match the width of the chip 11. The combined height of the support platform and the chip 11 is approximately equal to the height of the tapered lensed fiber 15 of the pigtail assembly within the enclosure.
Preferably, the electro-optic modulator further comprises: and a reinforcing block 12, wherein the reinforcing block 12 is connected with one end of the tail fiber assembly in the shell and is superposed on the chip 11. Two adjacent side surfaces of the reinforcing block 12 are respectively abutted with the tapered lensed fiber 15 and the chip 11 of the pigtail assembly. By providing the reinforcing block 12, the connection stability of the tapered lensed fiber 15 and the chip 11 can be increased.
In addition, preferably, a sealing ring 17 is arranged in the through hole, the sealing ring 17 is sleeved and fixed on the pigtail assembly, and a third glue layer (not identified) is arranged on the end face of one end of the sealing ring 17, which is close to the external environment, and the end face of the through hole. Through setting up sealing ring 17, realize the installation of the through-hole of tail optical fiber subassembly and casing 10, can improve connection stability, the third glue film on the sealing ring 17 provides the leakproofness for the tail optical fiber subassembly simultaneously, and then improves the gas tightness of electro-optical modulator.
In this embodiment, the sealing ring 17 includes a first ring segment and a second ring segment, an outer diameter of the first ring segment is larger than an outer diameter of the second ring segment, and an inner diameter of the first ring segment is smaller than an inner diameter of the second ring segment. The first ring section is in clearance fit with the through hole of the shell 10, the first metal pipe 16 is inserted in the first ring section, and the end faces of the first metal pipe 16 and the first ring section are fixed through the second welding layer 20; the second ring section extends from the through hole to the external environment, a second metal pipe 18 is inserted in the second ring section, and the second metal pipe 18 is overlapped on the outer pipe wall between the grooves; there is the clearance between second ring section and the through-hole, bonds through the third glue film between second ring section and the through-hole, and the third glue film is used for the annular gap between shutoff second ring section and the through-hole.
The fabrication and use of the electro-optic modulator is further described below.
The electro-optical modulator comprises a shell 10, a cover plate 23, a chip 11, a reinforcing block 12, a tail fiber assembly and a sealing ring 17, wherein the chip 11 is placed on a supporting table of the shell 10 and is fixed through a second adhesive layer 22, and the reinforcing block 12 is bonded on the chip 11 through purple light glue. Coupling the assembled tail fiber assembly with the chip 11 and fixing the tail fiber assembly with the first adhesive layer 13, then installing a sealing ring 17 in a through hole of the shell 10, penetrating the sealing ring 17 through a second end of the tail fiber assembly, welding and fixing the sealing ring 17 and a second metal pipe 18, and forming a third adhesive layer in the outer end face of the through hole; finally, the cover plate 23 is covered over the opening of the case 10 for sealing. After the electro-optic modulator is manufactured, the electro-optic modulator is installed at a specified position for use.
As can be seen from the above description and practice, the present invention provides a pigtail assembly and an electro-optical modulator including the same, which have the following advantages compared with the prior art: the structure is simple, and each protective sleeve and the metal tube provide good protection effect for the tapered lens optical fiber and have good air tightness; the coupling loss can be reduced and the optimal coupling efficiency can be obtained by adopting the coupling of the tapered lens optical fiber and the waveguide.
Those of ordinary skill in the art will understand that: the above description is only for the specific embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pigtail assembly, comprising:
the tapered lens optical fiber comprises a first end and a second end which are oppositely arranged, and the first end is connected with the chip;
the first protective sleeve is sleeved and fixed on the tapered lens optical fiber, and the first end can extend to the outside of the first protective sleeve;
the first metal tube is opposite to the first protective sleeve and is arranged at intervals, the first metal tube is sleeved and fixed on the tapered lens optical fiber, and the second end of the first metal tube penetrates through the first metal tube;
and the second protective sleeve is sleeved on the tapered lens optical fiber and is abutted against one end of the first protective sleeve far away from the first metal pipe, and the second end can extend to the outside of the second protective sleeve.
2. The pigtail assembly of claim 1,
further comprising: the second metal pipe is sleeved on the conical lens optical fiber and arranged between the first metal pipe and the second protective sleeve, and two opposite ends of the second metal pipe are respectively abutted against the first metal pipe and the second protective sleeve; at least one groove is arranged on the outer pipe wall of the second metal pipe.
3. A pigtail assembly according to claim 1 or 2,
further comprising: the relative both ends of first protective sheath all are provided with first glue film, first protective sheath is kept away from first tubular metal resonator one end terminal surface first glue film is used for bonding conical lens optic fibre with the chip, first protective sheath is close to first tubular metal resonator one end terminal surface first glue film to extend in the first protective sheath, and be used for bonding conical lens optic fibre with first protective sheath.
4. A pigtail assembly according to claim 1 or 2,
further comprising: the welding layer is arranged on the end face, close to the first protective sleeve, of the first metal tube, and the welding layer is used for welding and fixing the conical lens optical fiber and the first metal tube.
5. An electro-optic modulator, characterized in that,
a housing;
a chip connected inside the housing;
two sets of pigtail assemblies as claimed in any of claims 1 to 4, wherein the two sets of pigtail assemblies are arranged at opposite ends of the chip respectively and are connected to the chip, and free ends of the two sets of pigtail assemblies extend through the housing to the external environment.
6. The electro-optic modulator of claim 5,
the shell comprises a shell body and a cover plate, wherein the shell body is provided with an opening, the cover plate is used for sealing the opening, an accommodating cavity communicated with the opening is arranged in the shell body, and through holes communicated with the external environment are formed in the cavity walls of two opposite sides of the accommodating cavity.
7. The electro-optic modulator of claim 6,
the casing includes the bottom plate and follows the lateral wall that extends along the circumference of bottom plate, the free end of lateral wall encloses to close and forms the opening, the apron with the terminal surface of the free end of lateral wall is connected, two the through-hole is in relative setting on the lateral wall, and all with the holding chamber intercommunication.
8. The electro-optic modulator of claim 7,
the bottom plate is provided with a supporting platform, the supporting platform is used for supporting the chips, and a second adhesive layer is arranged between the supporting platform and the chips.
9. The electro-optic modulator of claim 8,
further comprising: and the reinforcing block and the tail fiber assembly are positioned in the shell, are connected at one end part and are superposed on the chip.
10. The electro-optic modulator of any of claims 6-9,
and a sealing ring is arranged in the through hole, the sealing ring is sleeved and fixed on the tail fiber assembly, and a third adhesive layer is arranged on the end face, close to the external environment, of the sealing ring and the end face of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922368245.0U CN211123385U (en) | 2019-12-25 | 2019-12-25 | Tail fiber assembly and electro-optical modulator comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922368245.0U CN211123385U (en) | 2019-12-25 | 2019-12-25 | Tail fiber assembly and electro-optical modulator comprising same |
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| CN211123385U true CN211123385U (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908048A (en) * | 2019-12-25 | 2020-03-24 | 北京世维通科技股份有限公司 | Tail fiber assembly and electro-optical modulator comprising same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908048A (en) * | 2019-12-25 | 2020-03-24 | 北京世维通科技股份有限公司 | Tail fiber assembly and electro-optical modulator comprising same |
| CN110908048B (en) * | 2019-12-25 | 2024-04-19 | 北京世维通科技股份有限公司 | Tail fiber assembly and electro-optic modulator comprising same |
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