CN1790077A

CN1790077A - Optical module with photoelectric calibration

Info

Publication number: CN1790077A
Application number: CN 200410093200
Authority: CN
Inventors: 陈斌
Original assignee: FEIEN MICROELECTRONICS Co Ltd SHANGHAI
Current assignee: FEIEN MICROELECTRONICS Co Ltd SHANGHAI
Priority date: 2004-12-17
Filing date: 2004-12-17
Publication date: 2006-06-21

Abstract

The invention discloses an optical mode with optical calibration function, which comprises the following parts: host part, sleeve, connecting guiding part, optical connector, optical component, case, sealing cavity, floor, front plate and pin, wherein the sealing cavity is formed by covering lid and sealing ring on the case; the floor contains driver integrated circuit, laser diode, lens and photoelectric diode sequently; the ring is set on the exterior of front plate; the sleeve of optical component is embedded in the ring; the pipe body of optical component is embedded in the fixing part; the fixing part is embedded in the sleeve; the optical fiber pierces the pipe body; the pin is set on the rear part of floor; the connecting guiding part displays box type structure, which is cased the exterior of sleeve and fixing part; two sides of connecting guiding case contain bayonet seat; the sleeve is set in the optical connector with the fixing pipe embedding in the sleeve; the spring is set on the top of optical connector; the optical fiber pierces the fixing pipe through spring; two sides of optical connector contain bayonet to mate the bayonet seat of connecting guiding part.

Description

The optical module that possesses photoelectric calibration

Technical field:

The present invention relates to a kind of optical module, particularly a kind of optical module that possesses photoelectric calibration.

Background technology:

Utilization Optical Fiber Transmission information is adopted in large quantities by people in the process of modern communication, when the I﹠M fiber plant, can run into the problem that a large amount of optical fiber is aimed at optical tube, and at present employed be traditional passive alignment so, adopt the method for optical correction as butt-joint mode alignment optical module, in addition, the laser diode of equipment can not break away from optical tube and aim at, distance between them is short too, can not place amplifying lens, therefore coupling efficiency is just lower, be generally 10dB, thereby influence laser propagation effect.

Summary of the invention:

The objective of the invention is provides a kind of optical module that possesses photoelectric calibration at the defective that exists in the prior art.The present invention mainly comprises: main element, sleeve pipe, connect guiding element, optical connector, optical module, main element is by shell, laser diode, the laser driver integrated circuit, photodiode, lens, pin is formed, it is characterized in that: the shell of main element forms the airtight cavity of a sealing by cover plate and O-ring seal, on the base plate first half of making by metal material driver IC is housed successively, laser diode, lens, the latter half of projection of making by stupalith that is provided with of base plate, photodiode is housed on the projection, header board is provided with a hole, the header board outside is provided with an annulus, the annulus internal orifice dimension divides big or small two parts, be provided with hermetyic window in the district of large aperture and be connected by laser bonding with the sleeve pipe of the optical module that embeds, annulus other end small-bore district is connected with the header board outside, the body of optical module embeds fixture, fixture embeds sleeve pipe, optical fiber penetrates body, pin is arranged on below base plate latter half of, the fixture of optical module is made for tubular body by stainless steel metal, form wringing fit with the body of making by zirconia ceramics, body can be divided into the different two-section of external diameter, thin end embeds fixture, also can be made into the constant body of external diameter, embed sleeve pipe, the top of body is the inclined-plane, and optical fiber penetrates the body center pit.The connection guiding element is a box like structure, contain the outside that is rolled in sleeve pipe and fixture, connection between optical module and the optical connector connects by connecting guiding element, connect guiding element housing both sides and be provided with horizontal T shape bayonet mount, its surface is provided with screw thread, the top that connects guiding element is provided with a hole, be provided with a sleeve pipe in the optical connector, stationary pipes embeds sleeve pipe, and the top of optical connector is provided with a hole, be provided with a spring between sleeve pipe and the hole, optical fiber passes hole and spring, penetrates stationary pipes, and the optical connector both sides are provided with bayonet socket, bayonet socket is provided with screw thread, cooperates with the horizontal T shape bayonet mount that is connected guiding element.This present invention's advantage is: adopt initiatively photoelectric calibration form, the location of light emitting semiconductor device can break away from optical tube and carry out, improved coupling efficiency by placing lens, main element is placed the interior steady operation that improves laser diode of airtight cavity of sealing.

Description of drawings:

Fig. 1 possesses the optical module structural representation of photoelectric calibration

Fig. 2 possesses the sectional view of the optical module of photoelectric calibration along the IB-IB line

Fig. 3 optical assembly structure synoptic diagram

Fig. 4 optical module sectional view

Fig. 5 optical module sectional view

Fig. 6 X, the Y graph of a relation between deviation angle and coupling efficiency

The optical module band that Fig. 7 possesses photoelectric calibration connects the guiding element structural representation

The optical module band that Fig. 8 possesses photoelectric calibration connects the sectional view of guiding element along the VB-VB line

Fig. 9 connects the guiding element structural representation

Figure 10 possesses the optical module band optical connector structural representation of photoelectric calibration

Figure 11 possesses the sectional view of the optical module band optical connector of photoelectric calibration along the VIB-VIB line

Figure 12 optical connector structural representation

1 optical module, 10 main elements, 12 shells, 14 laser diodes, 16 laser driver integrated circuit, 18 photodiodes, 19 projections, 20 lens, 21 O-ring seals, 22 pins, 24 base plates, the 24a stupalith, the 24b metal material, 25 hermetyic windows, 26 side plates, the 26a side plate, the 26b header board, plate behind the 26c, 27 preceding holes, 28 cover plates, 29 annulus, 30 optical modules, 32 bodys, the 32a body is carefully held, 32b body butt end, the 32c inclined-plane, the 32d inclined-plane, the 32e inclined-plane, 34 fixtures, 36 body center pits, 37 optical fiber, 40 sleeve pipes, 50 connect guiding element, the horizontal T shape of 52a bayonet mount, the horizontal T shape of 52b bayonet mount front end, above the 54 connection guiding elements, below the 56 connection guiding elements, 58a connects the preceding hole of guiding element, 58 connect the front of guiding element, 70 optical connectors, 72 holes, 73 connect the cabin, 74 sleeve pipes, 75 springs, 76 flexible arms, 77 bayonet sockets, 78 conduits, 79 stationary pipes

Embodiment:

With reference to Fig. 1, Fig. 2, main part 10 links into an integrated entity with sleeve pipe 40 and optical module 30.Main part 10 has comprised shell 12, laser diode 14, laser driver integrated circuit 16, photodiode 18, lens 20, pin 22.Shell 12 is by base plate 24, and side plate 26 and cover plate 28 are formed.Base plate divides two parts.Driver IC 16, laser diode 14 and lens 20 are housed on the first half successively.Lens 20 are positioned on the base plate first half, are between laser diode 14 and the header board 26b.It receives the light that laser diode 14 sends previously.Lens 20 are cut upper and lower surface by glass spheres flat, like this can be more accurate fixing.Latter half is provided with a projection 19, and photodetector 18 is housed on the projection 19.It is between back plate 26c and the laser driver integrated circuit 16, receives the light that laser diode 14 sends dorsad.These parts are in the z of Fig. 1 direction of principal axis center-aligned.Base plate 24 is made of metal, and helps the heat radiation of laser diode.The latter half 24a of base plate is made by pottery, and pin 22 links to each other with laser drive circuit 16 usefulness lead-in wire, is used for providing control signal to driver.Pin 22 is arranged on below the latter half of 24a of base plate.There is individual hole 27 header board 26b front, and the light that laser diode 14 sends can pass.Annulus 29 is positioned at header board 26b front, is used for fixing sleeve pipe 40.Annulus 29 internal orifice dimensions divide big or small two parts.The large aperture district contains hermetyic window 25, and these parts all are to be positioned at header board 26b center to align with the z axle.Except that sealed window 25, cover plate 28 also seals by O-ring seal 21.Whole like this cavity airtight makes laser diode steady operation for a long time.Pin 22 stretches out shell from three directions, can carry signal to optical module, also can take out signal.

With reference to Fig. 3, Fig. 4 and Fig. 5, optical module 30 contains body 32 and fixture 34.Body 32 is got by ceramic such as zirconias.Body 32 structures such as Fig. 4 are divided into the different two-section of external diameter.Optical fiber 37 passes from center pit 36.Fixed part 34 usefulness stainless steel and other metal materials are made tubulose.Form wringing fit with the shape of nonmetallic pipe 32.The nonmetallic pipe system can be become shape as shown in Figure 5 as required, diameter does not change, and the top is inclined-plane 32e yet.Though body is nonmetal, it can be connected by laser bonding with fixed part, and as shown in Fig. 3, Fig. 4 and Fig. 5, the afterbody of body 32 embeds in the fixture 34.Sleeve pipe 40 also is to make with metals such as stainless steels, and fixture embeds sleeve pipe 40.Each several part between optical module 30 and the main element 10 comprises that sleeve pipe 40, fixture 34, annulus 29 etc. engage by laser bonding.Aligning between optical module 30 and the main part 10 is realized by sleeve pipe 40.Like this, laser diode 14 and the optical module 30 in the main part 10 just can be coupled.By the control of position between the above-mentioned parts, can be from X, Y, the Z direction is aimed at optical module 30 and main element 10.Z to aligning realize by mobile fixed part 34 and sleeve pipe 40.X and Y direction are aimed at and are realized by the position between mobile sleeve pipe 40 and the annulus 29.Carry out Z earlier to aligning, after waiting to aim at, use laser bonding.Then to X and Y to finely tuning, also carry out laser bonding after the adjustment.The dislocation of X and Y is influential to coupling efficiency, referring to Fig. 4, has optimum coupling efficiency.In case the position determines that a stable coupling efficiency is just arranged.

Connect guiding element 50 and be box like structure, divide two sides 52, above 54, below 56, front 58 contains the outside that is rolled in sleeve pipe 40 and fixture 34, plays fixedly relative position.Afterbody is open, and the both sides Y-axis that connects guiding element 50 is to respectively being provided with a horizontal T shape bayonet mount 52a, and its surface is provided with screw thread, is used to mesh the bayonet socket 77 of optical conenctor 70, plays fixedly support effect (seeing Figure 12).The conduit 78 that horizontal T shape bayonet mount front end 52b is provided with screw thread and optical connector 70 matches.The front that connects guiding element 50 is provided with a hole 58a by nonmetallic pipe 32.Distance between nonmetallic pipe 32 and the horizontal T shape bayonet mount 52a is seen Fig. 7 and Fig. 9, and they have determined the elastic force of the spring 75 of optical connector.

With reference to Figure 10 and Figure 11, the coupling between optical module 1 and the optical connector 70 realizes by connecting guiding element 50.Optical connector 70 can be made of plastic.

With reference to Figure 10 and Figure 12, be provided with a sleeve pipe 74 in the connection cabin 73 of optical connector 70, stationary pipes 79 embeds sleeve pipe 74, the top that connects cabin 73 is provided with a hole 72 by optical fiber, be provided with a volute spring 75 between topped hole 72 and the sleeve pipe 74, optical fiber passes hole 72 and spring 75, penetrates stationary pipes 79.Optical connector 70 both sides respectively are provided with a resilient arm 76, and bayonet socket 77 is arranged on the arm, and bayonet socket 77 is provided with screw thread, closely cooperate with the horizontal T shape bayonet mount 52a that is connected guiding element 50.Elastic arm 76 makes bayonet socket agree with easily to bayonet mount, and after stationkeeping was good, elastic arm 76 reinstatements so just closely compressed two parts.And sleeve pipe 74 and spring 75 also compress these two parts.Under the effect of conduit 78, avoided nonmetal body 32 to be subjected to power perpendicular to optical axis direction.Behind optical connector 70 and optical module 1 joint, body 32 stretches into sleeve pipe 74, and the stationary pipes 79 that contains optical fiber also stretches into sleeve pipe and fixing.In sum because optical module can carry out X to optical fiber, Y, Z to little aligning, (specifically by aiming at welding between fixed part and the sleeve pipe 40, annulus 29 and sleeve pipe 40 are at X, and Y is to aiming at welding) no longer needs the silicon platform that optical module is carried out passive aligning.

This module is because the aligning of its laser diode adopts active form, and the location of light emitting semiconductor device can break away from optical tube and carry out.Distance between them is enough big, can improve coupling efficiency by placing lens.In addition, the location of laser diode can be placed hermetyic window owing to can separately carry out with optical tube between them.Can improve the steady operation time of laser diode like this.

Claims

1. optical module that possesses photoelectric calibration, mainly comprise: main element, sleeve pipe, connect guiding element, optical connector, optical module, main element is by shell, laser diode, the laser driver integrated circuit, photodiode, lens, pin is formed, it is characterized in that: the shell of main element forms the airtight cavity of a sealing by cover plate and O-ring seal, on the base plate first half of making by metal material driver IC is housed successively, laser diode, lens, the latter half of projection of making by stupalith that is provided with of base plate, photodiode is housed on the projection, header board is provided with a hole, the header board outside is provided with an annulus, the annulus internal orifice dimension divides big or small two parts, be provided with hermetyic window in the district of large aperture and be connected by laser bonding with the sleeve pipe of the optical module that embeds, annulus other end small-bore district is connected with the header board outside, the body of optical module embeds fixture, fixture embeds sleeve pipe, optical fiber penetrates body, pin is arranged on below base plate latter half of, the connection guiding element is a box like structure, contain the outside that is rolled in sleeve pipe and fixture, connection between optical module and the optical connector connects by connecting guiding element, connect guiding element housing both sides and be provided with horizontal T shape bayonet mount, its surface is provided with screw thread, the top that connects guiding element is provided with a hole, optical connector is provided with a sleeve pipe, stationary pipes embeds sleeve pipe, the top of optical connector is provided with a hole, be provided with a spring between sleeve pipe and the hole, optical fiber passes hole and spring, penetrate stationary pipes, the optical connector both sides are provided with bayonet socket, bayonet socket is provided with screw thread, cooperates with the horizontal T shape bayonet mount that is connected guiding element.

2. a kind of optical module that possesses photoelectric calibration according to claim 1, the fixture of wherein said optical module is made for tubular body by stainless steel metal, form wringing fit with the body of making by zirconia ceramics, body can be divided into the different two-section of external diameter, thin end embeds fixture, also can be made into the constant body of external diameter, embeds sleeve pipe, the top of body is the inclined-plane, and optical fiber penetrates the body center pit.