CN101191875A - Single fiber bidirectional device based on PLC technology and its manufacture method - Google Patents
Single fiber bidirectional device based on PLC technology and its manufacture method Download PDFInfo
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- CN101191875A CN101191875A CNA2007101467393A CN200710146739A CN101191875A CN 101191875 A CN101191875 A CN 101191875A CN A2007101467393 A CNA2007101467393 A CN A2007101467393A CN 200710146739 A CN200710146739 A CN 200710146739A CN 101191875 A CN101191875 A CN 101191875A
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Abstract
The invention discloses a single fiber bi-directional device based on PLC technology, which comprises an optical chip with a wavelength division multiplexing function and manufactured with the PLC technology; a laser chip which is used to produce optical signals; a detector chip which is used to receive optical signals; optical fiber or optical fiber stubs; a packaging shell with a fiber hole and an electric angle; the optical signal input/output waveguide port on the optical chip is in coupling connection with the optical fiber, the laser chip and the detector chip are in coupling connection with the corresponding waveguide ports on the optical chip respectively, the whole optical combination chips are fixed in the packaging shell, the optical fiber is pulled through the fiber hole on the shell, electrodes of the laser chip and the detector chip are connected with the electric angle respectively and the inside of the shell body is in leakage isolation with the outside .
Description
Technical field
The present invention relates to a kind of single fiber bi-directional device, specifically be meant a kind of single fiber bi-directional device that is used for fiber optic communication field based on the PLC technology, the present invention also relates to the method for making of this single fiber bi-directional device simultaneously.
Technical background
The single fiber bi-directional device is the core light device that is used for Fiber Access System, is that laser instrument and detector are packaged together, and transmits upward signal and downgoing signal by an optical fiber jointly.At present it realizes that technical approach is to adopt the discrete component technology, the laser instrument of TO_CAN packing forms and detector and WDM diaphragm is encapsulated in the betal can, by an optical fiber coupling output.This technical approach is very ripe at present, but owing to adopt manual mode to carry out encapsulation operation, the reliability of encapsulation is relatively poor, and efficient is lower, and because manual operations when large-scale production, does not have cost advantage.Along with the single fiber bi-directional optical device enters civil area, the pressure of cost is increasing, and the drawback of this traditional technical approach is just more and more obvious.
Summary of the invention
One of purpose of the present invention has provided a kind of single fiber bi-directional device based on optical planar circuit technology (PLC), is suitable for large-scale production, has the production efficiency height, cost is low.
This purpose of the present invention realizes by following technical solution: a kind of single fiber bi-directional device based on the PLC technology comprises: the optical chip with wavelength-division multiplex function with the manufacturing of PLC technology; A chip of laser that is used for producing light signal; A detector chip that is used for receiving optical signals; One optical fiber or fiber stub are used for being connected with optical waveguide port on the optical chip, realize inputing or outputing light signal; One has the optical fiber optical fiber hole and electricity draws the package casing at angle, is used for an optical chip, chip of laser, detector chip to be encapsulated in the housing;
Coupling links to each other light signal I/O optical waveguide port on the described optical chip with optical fiber, chip of laser links to each other with each self-corresponding optical waveguide port coupling on the optical chip respectively with detector chip, whole optics combined chip is fixed in the package casing, optical fiber passes from the optical fiber hole of shell, the electrode of chip of laser and detector chip links to each other with electric pin on the package casing respectively, in the housing and extraneously be the impermeability isolation.
Critical piece in the single fiber bi-directional device of the present invention all adopts chip form, wholely makes that the volume of whole single fiber bi-directional device is littler, and chip of laser and detector chip all and between the optical chip be coupled, and the conformability between the components and parts is better.After optical chip and optical fiber, chip of laser, detector chip coupling encapsulation are finished, they are fixed in the package casing that has optical fiber outlet and an electric pin together, carry out level Hermetic Package then, the input and output of light signal realize by optical fiber or fiber stub.
Described single fiber bi-directional device also has a back light detector chip that is used for detecting laser power, can link to each other by optical waveguide between laser power detection chip and the chip of laser, and it is fixed in the package casing together.
Two of purpose of the present invention has provided a kind of method for making of above-mentioned single fiber bi-directional device.
This purpose of the present invention realizes by following technical solution: a kind of method for making of the single fiber bi-directional device based on the PLC technology comprises the steps:
1) coupling of optical fiber and optical chip is linked to each other, optical chip is coupled with detector chip with chip of laser respectively and links to each other;
2) above-mentioned continuous optical fiber, optical chip, chip of laser and detector chip is fixedly mounted on together in the package casing that has optical fiber outlet and an electric pin, constitutes the single fiber bi-directional device;
3) whole single fiber bi-directional device is carried out level Hermetic Package;
Whole single fiber bi-directional device is realized the input and output of different wave length light signal by an optical fiber, realizes the input and output of electric signal by the electric pin of package casing.
Adopt the single fiber bi-directional device based on the PLC technology of aforesaid way; adopt semiconductor equipment and processing technology; automatically degree of the changing into height of assembling; reduce manual operations; compare with prior art; the good reproducibility of product, the reliability height has the discrete component cost effect that is beyond one's reach during large-scale production.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is further described in detail.
Fig. 1 is the principle schematic of single fiber bi-directional device of the present invention;
Fig. 2 is the one-piece construction synoptic diagram of single fiber bi-directional device embodiment one of the present invention;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the structural drawing of the optical chip of single fiber bi-directional device embodiment one of the present invention;
Fig. 5 is another structural drawing of the optical chip of single fiber bi-directional device of the present invention;
Fig. 6 is the one-piece construction synoptic diagram of single fiber bi-directional device embodiment two of the present invention;
Fig. 7 is the B-B sectional view of Fig. 6.
Embodiment
A kind of single fiber bi-directional device as shown in Figures 1 to 4 based on the PLC technology, it comprises: the optical chip with wavelength-division multiplex function 4 with the manufacturing of PLC technology; A chip of laser 2 (LD) that is used for producing light signal; A detector chip 1 (PD) that is used for surveying light signal; A detection chip 3 (MPD) and an optical fiber 6 that is used for the detecting laser chip power, this optical fiber 6 are used for being connected with optical waveguide port on the optical chip 4, realize inputing or outputing light signal; A package casing 5 that has optical fiber optical fiber hole and electric pin, being used for an optical chip 4, chip of laser 2, detector chip 1 is encapsulated in the housing, make whole single fiber bi-directional device be integrated into an one-piece construction unit, package casing 5 is airtight metal shell, isolate for impermeability in the shell and between the external world, the outside surface of this package casing 5 also covers one deck Gold plated Layer, chip of laser 2, detector chip 1 link to each other with corresponding optical waveguide port coupling on the optical chip 4 respectively, and laser power detection chip 3 links to each other with chip of laser 2 couplings.Wherein, on detector chip 1 and chip of laser 2 ceramic substrate is set, chip of laser 2 is installed on the ceramic substrate in the mode of paster, and the electrode of chip of laser 2 and detector chip 1 links to each other with electric pin on the package casing 5 respectively.Light signal I/O optical waveguide port on the optical chip links to each other with the optical fiber coupling, optical fiber 6 is coupled by gluing mode with the optical waveguide port of optical chip 4, the optical fiber hole that passes package casing 5 stretches out outside the shell, optical fiber 6 also can adopt fiber stub, and optical chip 4 is realized inputing or outputing of light signal by optical fiber 6.
Optical chip adopts the semiconducter process technology, chip surface is made various figures and structure, these figures and structure can realize the function of optical WDM (WDM), wavelength optical signals is outputed to respectively on the different optical waveguide ports, and the beam-splitting structure of realizing the WDM function on the optical chip can be multiple structure and modes such as grating, coupling mechanism, Mach-Zehnder interferometer (MZI) or embedding optical filtering TFF diaphragm.In the very high application of insulated degree requirement, the diaphragm that can add annex on the PLC output waveguide again increases isolation.The groove structure of opening on the surface of optical chip can also be U type groove, bar-shaped trough etc., perhaps adopts structures such as hole, cross; Also can open corresponding groove structure at the end face of the optical waveguide port of optical chip, such as U type groove, bar-shaped trough etc., the aligning location when being used for realizing optical chip and optical fiber, chip of laser, detector chip coupling.
The principle of work and the course of work of single fiber bi-directional device of the present invention are as follows:
The wavelength X of the uplink optical signal of single fiber bi-directional device
1Wavelength X with downlink optical signal
2, λ
1And λ
2Centre wavelength can be among 1310nm, 1490nm, the 1550nm any two.
Descending light signal is input in the optical chip by optical fiber, and optical chip is descending light wavelength lambda
2Output to the detector port, detector chip is wavelength λ
2The light signal electric current that converts corresponding size to output on the electrical lead of shell, to send wavelength be λ to chip of laser simultaneously
1The laser instrument port of light signal by optical chip be input in the optical chip, optical chip outputs to it in the optical fiber and transmits.So just realized in an optical fiber, transmitting simultaneously the signal of the different wave length of uplink and downlink.
The method for making of present embodiment single fiber bi-directional device, it comprises the steps:
1) gluing with optical waveguide port between the light signal I/O on optical fiber and the optical chip links to each other chip of laser, detector chip respectively with each self-corresponding optical waveguide port coupling on the optical chip; Chip of laser links to each other with the coupling of laser power detection chip;
Adhesive means between above-mentioned optical fiber and the optical chip adopts the mode of ON-CHIP (on the sheet), the position of coupled fiber is dug a V-type groove and is placed optical fiber on optical chip, with glue optical fiber is fixed in the V-type groove then, when adopting this adhesive means, the structure of optical chip as shown in Figure 5.
The connected mode of coupling is adopted in connection between above-mentioned optical chip and the chip of laser, it specifically is the connected mode that adopts OFF-CHIP (sheet is outer) coupling, laser power detection chip and chip of laser all are installed on the same ceramic substrate in the mode of paster, adjustment by 6 DOF is aimed at the light-emitting zone of chip of laser and the optical waveguide port of optical chip, fix ceramic substrate then and fix laser power detection chip and chip of laser, the single fiber bi-directional device that makes such as Fig. 6, shown in Figure 7.
The connected mode of coupling is adopted in connection between above-mentioned optical chip and the detector chip, it specifically is the connected mode that adopts OFF-CHIP (sheet is outer) coupling, on detector chip elder generation paster to a ceramic substrate, adjustment by 6 DOF is aimed at the photosensitive region of detector chip and the optical waveguide port of optical chip, fixes ceramic substrate then and fixes detector chip.
2) above-mentioned continuous optical fiber, optical chip, chip of laser and detector chip is fixedly mounted on together in the package casing that has optical fiber outlet and an electric pin, constitutes the single fiber bi-directional device;
3) whole single fiber bi-directional device is carried out level Hermetic Package; Level Hermetic Package is to use gold-plated metal shell, mode by electric current weldering realizes airtight, and the function of package casing has 2 points, the one, inner device and the isolation of extraneous impermeability, guarantee that device is not subjected to the influence of external environment, the secondth, guarantee that device has the ability of certain anti-hard damage.
Whole single fiber bi-directional device is realized the input and output of different wave length light signal by an optical fiber, realizes the input and output of electric signal by the electric pin of package casing.
In addition, in the above-described embodiments, the connected mode that the connection between optical fiber and the optical chip is gluing also can adopt the mode of OFF-CHIP (sheet outward), promptly optical fiber is fixed on earlier in the fiber fixed seat, and then fiber fixed seat is bonded in the port of optical chip.
Coupling scheme between optical chip and the chip of laser also can adopt the connected mode of ON-CHIP (on the sheet) coupling, on optical chip, dig a hole of placing chip of laser in advance, make the sign of some alignings simultaneously, chip of laser adopts the mode of flip chip bonding to be fixed in the hole, and the registration mark by optical chip is aimed at the luminous position of chip of laser and the optical waveguide port of optical chip simultaneously.When using this kind mode, the luminous power of chip of laser is to survey by port special on the optical chip.
Coupling scheme between optical chip and the detector chip also can adopt the connected mode of ON-CHIP (on the sheet) coupling, on optical chip, dig a hole of placing detector chip in advance, make the sign of some alignings simultaneously, the ceramic bases of bonding detector chip is placed on together in the hole of optical chip, by the registration mark on the optical chip photosensitive area of detector chip and the optical waveguide port of optical chip is aimed at simultaneously.Some to the exigent application of Signal Spacing degree in, can add an optical filter between the port of detector chip and optical chip increases isolation.
Packaged type also can use plastic packaging glue that the whole optical chip embedding that is of coupled connections is got up to realize sealing, and then be fixed in the non-airtight can.
Claims (14)
1. the single fiber bi-directional device based on the PLC technology is characterized in that comprising: the optical chip with wavelength-division multiplex function with the manufacturing of PLC technology; A chip of laser that is used for producing light signal; A detector chip that is used for receiving optical signals; One optical fiber or fiber stub are used for being connected with optical waveguide port on the optical chip, realize inputing or outputing light signal; One has the optical fiber optical fiber hole and electricity draws the package casing at angle, is used for an optical chip, chip of laser, detector chip to be encapsulated in the housing;
Coupling links to each other light signal I/O optical waveguide port on the described optical chip with optical fiber, chip of laser links to each other with each self-corresponding optical waveguide port coupling on the optical chip respectively with detector chip, whole optics combined chip is fixed in the package casing, optical fiber passes from the optical fiber hole of shell, the electrode of chip of laser and detector chip links to each other with electric pin on the package casing respectively, in the housing and extraneously be the impermeability isolation.
2. a kind of single fiber bi-directional device according to claim 1 based on the PLC technology, it is characterized in that: described single fiber bi-directional device also has a back light detector chip that is used for detecting laser power, can link to each other by optical waveguide between laser power detection chip and the chip of laser, and it is fixed in the package casing together.
3. a kind of single fiber bi-directional device based on the PLC technology according to claim 1 is characterized in that: the beam-splitting structure of described optical chip is optical grating construction, coupler structure, MZI structure or embeds the TFF diaphragm structure.
4. according to claim 1 or 3 described a kind of single fiber bi-directional devices based on the PLC technology, it is characterized in that: the surface of described optical chip has at least one and is used to be of coupled connections and aims at the groove structure of location, and the end face of its optical waveguide port also is provided with corresponding groove structure.
5. a kind of single fiber bi-directional device based on the PLC technology according to claim 4 is characterized in that: described groove structure is V-type groove, U type groove, bar-shaped trough, hole or cross.
6. according to claim 1 or 3 described a kind of single fiber bi-directional devices, it is characterized in that: be coupled by gluing mode between described optical chip and the optical fiber based on the PLC technology.
7. the method for making of the single fiber bi-directional device based on the PLC technology as claimed in claim 1 is characterized in that: comprise the steps:
A) gluing with optical waveguide port between the light signal I/O on optical fiber and the optical chip links to each other chip of laser, detector chip respectively with each self-corresponding optical waveguide port coupling on the optical chip;
B) above-mentioned continuous optical fiber, optical chip, chip of laser and detector chip is fixedly mounted on together in the package casing that has optical fiber outlet and an electric pin, constitutes the single fiber bi-directional device;
C) whole single fiber bi-directional device is carried out level Hermetic Package;
Whole single fiber bi-directional device is realized the input and output of different wave length light signal by an optical fiber, realizes the input and output of electric signal by the electric pin of package casing.
8. the method for making of single fiber bi-directional device according to claim 7, it is characterized in that: the adhesive means between described optical fiber and the optical chip adopts the outer mode of sheet, optical fiber is fixed on earlier in the fiber fixed seat, and then fiber fixed seat is bonded in the port of optical chip.
9. the method for making of single fiber bi-directional device according to claim 7, it is characterized in that: the adhesive means between described optical fiber and the optical chip adopts the mode on the sheet, the position of coupled fiber is dug a V-type groove and is placed optical fiber on optical chip, with glue optical fiber is fixed in the V-type groove then.
10. the method for making of single fiber bi-directional device according to claim 7, it is characterized in that: the coupling scheme between described optical chip and the chip of laser adopt the connected mode of the outer coupling of sheet, earlier on chip of laser paster to a ceramic substrate, adjustment by 6 DOF is aimed at the light-emitting zone of chip of laser and the optical waveguide port of optical chip, fixes ceramic substrate then and fixes chip of laser.
11. the method for making of single fiber bi-directional device according to claim 7, it is characterized in that: the coupling scheme between described optical chip and the chip of laser adopt the connected mode that is coupled on the sheet, on optical chip, dig a hole of placing chip of laser in advance, make the sign of aiming at simultaneously, chip of laser adopts the mode of flip chip bonding to be fixed in the hole, and the registration mark by optical chip is aimed at the luminous position of chip of laser and the optical waveguide port of optical chip simultaneously.
12. the method for making of single fiber bi-directional device according to claim 7, it is characterized in that: the coupling scheme between described optical chip and the detector chip adopt the connected mode of the outer coupling of sheet, on detector chip elder generation paster to a ceramic substrate, adjustment by 6 DOF is aimed at the photosensitive region of detector chip and the optical waveguide port of optical chip, fixes ceramic substrate then and fixes detector chip.
13. the method for making of single fiber bi-directional device according to claim 7, it is characterized in that: the coupling scheme between described optical chip and the detector chip adopt the connected mode that is coupled on the sheet, on optical chip, dig a hole of placing detector chip in advance, make the sign of some alignings simultaneously, the ceramic bases of bonding detector chip is placed on together in the hole of optical chip, by the registration mark on the optical chip photosensitive area of detector chip and the optical waveguide port of optical chip is aimed at simultaneously.
14. the method for making of single fiber bi-directional device according to claim 7 is characterized in that: described level Hermetic Package is to use glue that the whole optical chip embedding that is of coupled connections is got up to realize sealing, and then is fixed in the non-airtight can.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101467393A CN101191875B (en) | 2007-06-01 | 2007-08-15 | Single fiber bidirectional device based on PLC technology and its manufacture method |
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| CN200710028381 | 2007-06-01 | ||
| CN200710028381.4 | 2007-06-01 | ||
| CN2007101467393A CN101191875B (en) | 2007-06-01 | 2007-08-15 | Single fiber bidirectional device based on PLC technology and its manufacture method |
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| CN101191875B CN101191875B (en) | 2010-07-07 |
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| CN109061812A (en) * | 2018-08-27 | 2018-12-21 | 西安奇芯光电科技有限公司 | Adjustable small wavelength interval optical transceiver |
| CN109061812B (en) * | 2018-08-27 | 2020-08-07 | 西安奇芯光电科技有限公司 | Adjustable small wavelength interval light transceiver |
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