CN207601367U - A kind of hyperbolicity radius optical lens and optically coupled system - Google Patents

Abstract

The utility model provides a kind of hyperbolicity radius optical lens and optically coupled system, the hyperbolicity radius optical lens, including optical lens and hardware, wherein optical lens is embedded in hardware, optical lens is hyperbolicity radius structure close to the one side of coupling optical fiber, the hyperbolicity radius structure is the X of optical lens, Y-axis is orthogonal direction, and X, the optical lens curvature in Y-axis section are different.The utility model is novel in design rationally, simple in structure, easy to use and at low cost, has important market value.

Description

A kind of hyperbolicity radius optical lens and optically coupled system

Technical field

The utility model is related to optical communication field more particularly to play the role of opto-electronic conversion by two pole of FP, DFB type laser Pipe is by the optically coupled system in coaxial packaging or the light emitting devices of butterfly encapsulation, light transmitting-receiving unification device.

Background technology

Recently as the development of optic communication, data service, passive optical network PON access service increase sharply, and play photoelectricity and turn Change the light emitting devices of effect, the usage amount of light transmitting-receiving unification device shows the growth of explosion type.Optical Fiber Transmission distance simultaneously Increase also with the demand of partial service, lead to requirement of the application to luminous power also higher.These sun adjuster parts manufacture Enterprise also increases cost, the dual-pressure of properties of product while bringing increment.

Either light emitting devices or light transmitting-receiving unification device is required to laser coupled into optical fiber.Current main use Have FP, DFB type laser diode, FP represents Fabry Perot type laser, and DFB represents distributed feedback laser.

Coaxial packaging：Laser emission primary optical axis packaged type coaxial with optical lens primary optical axis, pin is is inserted into after encapsulation Formula, this mode cost is very low, is chiefly used in 10G and the product of following rate.

Butterfly encapsulates：Laser emission primary optical axis and the not coaxial packaged type of optical lens primary optical axis, pin is similar after encapsulation Butterfly's wing, both sides are mostly to be symmetrically arranged, and majority is controlled using refrigerator, and for various rate products, cost is higher.

It, can be by way of improving laser device emission effciency, coupling efficiency in order to improve out luminous power during optical fiber To solve.Core in optically coupled system is laser, lens, optical fiber, under the premise of laser and optical fiber are stablized relatively, It is the key that promote coupling efficiency to improve the efficiency of transmission of lens and quality.

Traditional lens system is generally divided into spherical lens and non-spherical lens, and the two is used on a large scale at present In optically coupled system.By optimizing optical parameter, optimization material promotes refractive index, the traditional approach such as dimensional accuracy is controlled to promote coupling Close the effect unobvious further of efficiency.

Utility model content

The utility model for the above-mentioned prior art in deficiency, it is special for the transmitting light angle of divergence of FP, Distributed Feedback Laser Sign, devises a kind of novel lens arrangement and corresponding coupled system, can effectively promote coupling efficiency, quality.

Technical solutions of the utility model provide a kind of hyperbolicity radius optical lens, including optical lens and metal structure Part, wherein optical lens are embedded in hardware, and optical lens is hyperbolicity radius structure close to the one side of coupling optical fiber, The hyperbolicity radius structure is the X of optical lens, Y-axis is orthogonal direction, and X, the optical lens curvature in Y-axis section are different.

Moreover, the X axis of optical lens and the mark of Y-axis are set on hardware.

Moreover, the hardware is metal tube.

The utility model also provides a kind of optically coupled system, including laser diode and hyperbolicity radius optical lens, institute It states hyperbolicity radius optical lens and includes optical lens and hardware, wherein optical lens is embedded in hardware, Optical lens is hyperbolicity radius structure close to the one side of coupling optical fiber, and the hyperbolicity radius structure is X, Y of optical lens Axis is orthogonal direction, and X, the optical lens curvature in Y-axis section are different.

Moreover, the X axis of optical lens and the mark of Y-axis are set on hardware.

Moreover, the perpendicular and parallel angle of divergence of hanging down of laser diode is respectively aligned to X on hardware, Y-axis mark.

Moreover, the hardware is metal tube.

It is vertically peaceful based on FP, Distributed Feedback Laser since the Gauss light that laser is sent out is divided into vertical, parallel both direction The different feature of the angle of departure of row both direction, light extraction are ellipticity polarised light.The utility model is using lens hyperbolicity Mode distinguishes coupling for the angle of divergence on different directions, and coupling in two directions can reach more excellent coupling State is obviously improved whole coupling efficiency.Bi-curvature lens is made of the method for mould heat pressure, so as to make in that orthogonal direction Make hyperbolicity effect.The utility model is novel in design rationally, simple in structure, easy to use and at low cost, but has and significantly change Kind effect, important function will be generated in the communications industry, have great market value.

Description of the drawings

Fig. 1 is the lens subassembly appearance schematic diagram of the utility model embodiment.

Fig. 2 is the lens subassembly schematic top plan view of the utility model embodiment.

Fig. 3 is the X axis sectional structure chart of utility model embodiment.

Fig. 4 is the Y-axis sectional structure chart of the utility model embodiment.

Fig. 5 is the effect contrast figure of the utility model and the prior art.

Specific embodiment

Below in conjunction with drawings and examples, technical solutions of the utility model are described in detail.

The utility model proposes a kind of optical lens module based on orthogonal direction hyperbolicity radius, including optical lens Mirror, hardware, wherein optical lens are embedded in hardware, and optical lens uses hot-forming, embedded mode packet Include press-fitting, hot pressing etc..

The hardware of the utility model embodiment uses metal tube, based on Design of Aspherical Lenses, optical lens Hyperbolicity radial design is done on one side, then this optical lens is carried by metal tube, close to coupling optical fiber so as to convenient Be placed in coupled system and use.

When it is implemented, radius of curvature α, β can according to the X of the laser diode of various lasers, the Y-axis angle of divergence come Customization.

As shown in Figure 1, optics bi-curvature lens 1, by hot pressing machine-shaping, making shape is ellipsoidal half, specifically During implementation, the radius and height of product can be set according to the angle of divergence and optical lens focal length of the transmitting light of laser；Optics hyperbolic Then rate lens 1 form bi-curvature lens component by press-fitting or hot pressing mode and 2 tight fit of metal tube.As shown in Fig. 2, The X of bi-curvature lens 1, Y-axis are orthogonal direction, correspond to elliptical long axis and short axle respectively.As shown in Figure 3 and Figure 4, X, Y-axis Sectional structure chart in, the optical lens curvature of the two axial cross sections is different, is denoted as α and β respectively, and curvature is equal to 1/R (R is radius of curvature), it can be understood as the radius corresponding to the circle of the two axial sections is different.

After component is shaped to, X, the Y-axis needs of optics bi-curvature lens 1 identify on metal tube 2, with after an action of the bowels End use when can clearly differentiate X, Y-axis direction.Generally can by metal tube 2 scribing line, groove, the modes such as get ready Do sign.In coupling in use, the vertical ⊥ of laser diode, the parallel ∥ angles of divergence are respectively aligned on metal tube 2 X, Y-axis sign.

Referring to Fig. 5, by taking DFB laser diodes as an example, during conventional coupling globe lens of the prior art, two pole of DFB laser The transmitting light of pipe is elliptical light, and after routinely coupling globe lens, converged light remains as elliptical light, and elliptical light enters round fibre Core can cause a large amount of light cannot be introduced into, so as to reduce coupling efficiency；And when using coupled lens provided by the utility model, The transmitting light of DFB laser diodes is elliptical light, and after coupled lens provided by the utility model, converged light becomes round Light, circular light enter circular core, do not have the loss of light, improve coupling efficiency.

It sells, can also be made including laser when it is implemented, hyperbolicity radius optical lens can be fabricated separately in manufacturer The optically coupled system of diode and hyperbolicity radius optical lens is integrally sold.

The scope of protection of the utility model includes but not limited to embodiment of above, and the scope of protection of the utility model is to weigh Subject to sharp claim, any replacement being readily apparent that those skilled in the art that this technology is made, deformation, improvement are each fallen within The scope of protection of the utility model.

Claims (7)

1. a kind of hyperbolicity radius optical lens, including optical lens and hardware, wherein optical lens is embedded in metal In structural member, optical lens is hyperbolicity radius structure close to the one side of coupling optical fiber, and the hyperbolicity radius structure is optics The X of lens, Y-axis are orthogonal direction, and X, the optical lens curvature in Y-axis section are different.

2. hyperbolicity radius optical lens according to claim 1, it is characterised in that：Optical lens are set on hardware The X axis of mirror and the mark of Y-axis.

3. hyperbolicity radius optical lens according to claim 1 or claim 2, it is characterised in that：The hardware is metal Tube body.

4. a kind of optically coupled system, including laser diode and hyperbolicity radius optical lens, the hyperbolicity radius optical lens Mirror includes optical lens and hardware, and wherein optical lens is embedded in hardware, and optical lens is close to coupling light Fine one side is hyperbolicity radius structure, and the hyperbolicity radius structure is the X of optical lens, Y-axis is orthogonal direction, X, Y-axis Optical lens curvature to section is different.

5. optically coupled system according to claim 4, it is characterised in that：The X-axis of optical lens is set on hardware To the mark with Y-axis.

6. optically coupled system according to claim 5, it is characterised in that：The perpendicular and parallel angle of divergence difference of hanging down of laser diode X, Y-axis mark on alignment hardware.

7. according to claim 4 or 5 or 6 optically coupled systems, it is characterised in that：The hardware is metal tube.