CN201096918Y - Polarization optical branch bundle/merged bundle device - Google Patents
Polarization optical branch bundle/merged bundle device Download PDFInfo
- Publication number
- CN201096918Y CN201096918Y CNU2007200571126U CN200720057112U CN201096918Y CN 201096918 Y CN201096918 Y CN 201096918Y CN U2007200571126 U CNU2007200571126 U CN U2007200571126U CN 200720057112 U CN200720057112 U CN 200720057112U CN 201096918 Y CN201096918 Y CN 201096918Y
- Authority
- CN
- China
- Prior art keywords
- polarized light
- kapillary
- condenser lens
- beam splitting
- light beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a polarization beam splitter/combiner, which comprises a double-hole capillary tube, a first focusing lens, a second focusing lens and a single-hole capillary tube. The double-hole capillary tube, the first focusing lens, the second focusing lens and the single-hole capillary tube are arranged in sequence along the vertical shaft direction of the device of the polarization beam splitter/combiner. A first polarization maintaining optical fiber is arranged in one through hole of the double-hole capillary tube. The polarization beam splitter/combiner also comprises a sub-wavelength grating. The sub-wavelength grating is positioned between the first focusing lens and the second focusing lens along the vertical shaft direction of the device of the polarization beam splitter/combiner, an ordinary optical fiber is arranged in two through holes of the double-hole capillary tube, a second polarization maintaining optical fiber is arranged in the single-hole capillary tube. The structure of the polarization beam splitter/combiner is simple, and the extinction ratio specificity is good.
Description
Technical field
The utility model relates to the optical passive component of using in a kind of optical-fibre communications or the sensory field of optic fibre, particularly based on the polarized light beam splitting/bundling device of sub-wave length grating.
Background technology
The major function of polarized light beam splitting/bundling device is that nonpolarized light is split up into two bunch polarized lights, perhaps two bundle photosynthetic bundles of the mutually perpendicular linear polarization in polarization direction and being coupled in the same single-mode fiber.
Fig. 1 illustrates common a kind of polarized light beam splitting/bundling device, and it comprises three functional modules, i.e. the first optical function combination block A, the second optical function combination block B and the 3rd optical function combination block C.
The first optical function combination block A is an optical element combination piece of bearing laser input, output and light alignment function.It is mainly by polarization maintaining optical fibre 101,102, diplopore kapillary 103, and condenser lens 104 is formed.Wherein the optical axis direction of polarization maintaining optical fibre 101,102 is orthogonal as shown in Figure 1, and they are respectively applied for the mutually perpendicular two-route wire polarized light of polarization state L1, the L2 that transmission is told by crystal.
The second optical function combination block B realizes polarized light beam splitting/the close elements combination piece of bundle.It mainly comprises wollaston prism 105.Wollaston prism 105 has and nonpolarized light is split up into two bunch polarized lights or the synthetic a branch of function of two mutually perpendicular linearly polarized lights of polarization state, but must keep it to close bundle angle α and the angle of the light of pair optical fiber 101,102 outgoing is complementary from protecting partially.
The 3rd optical function combination block C bears input, output and the light alignment function of laser.It is by ordinary optic fibre 108, and single hole kapillary 107 and condenser lens 106 are formed.That wherein, transmit in ordinary optic fibre 108 is nonpolarized light L3.
This polarized light beam splitting/bundling device, though its volume has dwindled, but, therefore whether be in plumbness extra high requirement is arranged protecting in pair optical fiber structures partially the optical axis direction of two polarization maintaining optical fibres 101,102 because that the polarization state of the two-route wire polarized light L1, the L2 that tell through wollaston prism 105 keeps is orthogonal; In addition, when design, the bundle angle α that closes in the wollaston prism 105 is consistent with the two-way light angle of protecting two partially optical fiber 101,102 outgoing, but as there being the problem of material tolerance and assembly precision, both just are difficult to reach the degree of accurate coupling.So, the polarized light beam splitting/bundling device of this structure has just limited the utilization factor of protecting two partially optical fiber, has also limited the room for promotion of final products extinction ratios, has increased production cost greatly.
The utility model content
The utility model purpose be to provide a kind of simple in structure, volume is less, low cost of manufacture, polarized light beam splitting/bundling device that utilization of materials is high.
Polarized light beam splitting/bundling device according to the above-mentioned purpose design comprises diplopore kapillary, first condenser lens, second condenser lens and single hole kapillary.Diplopore kapillary, first condenser lens, second condenser lens and single hole kapillary are arranged in order along the device y direction of polarized light beam splitting/bundling device.In one of diplopore through hole capillaceous, be provided with first polarization maintaining optical fibre.This polarized light beam splitting/bundling device also comprises sub-wave length grating.Along the device y direction of polarized light beam splitting/bundling device, the position of sub-wave length grating between first condenser lens and second condenser lens, diplopore through hole capillaceous two in be provided with ordinary optic fibre, in the single hole kapillary, be provided with second polarization maintaining optical fibre.
Preferably, aforementioned polarized light beam splitting/bundling device, first optical function combination block that it is made of ordinary optic fibre, first polarization maintaining optical fibre, diplopore kapillary and first condenser lens and the 3rd optical function combination block that is made of second condenser lens, single hole kapillary and second polarization maintaining optical fibre, both are in the state that can rotate around this device longitudinal axis respectively with respect to the device longitudinal axis of polarized light beam splitting/bundling device.
Polarized light beam splitting/bundling device of the present utility model, owing to adopt sub-wave length grating to carry out beam split, thereby do not have in the prior art matching problem of closing the bundle angle and protecting two partially optical fiber two outgoing light angles of wollaston prism.Nonpolarized light is laying respectively at the both sides of device along self y direction through two linearly polarized lights that obtain after the sub-wave length grating beam splitting, so just avoided original guarantor partially in pair optical fiber structures the vertical matching problem of two optical axis directions.Polarized light beam splitting/bundling device of the present utility model had both been simplified device architecture, had been reduced volume, reduced and had made cost, promoted the utilization factor of two optical fiber structures again greatly, thereby made device reach the requirement of High Extinction Ratio easily.
The drawing explanation
Fig. 1 has polarized light beam splitting/bundling device structural representation now.
Fig. 2 the utility model polarized light beam splitting/bundling device structural representation.
Fig. 3 the utility model polarized light beam splitting/bundling device assembly structure synoptic diagram.
Fig. 2, in 3, the architectural feature of each mark correspondence or member title are as follows, a: the first optical function combination block, b: the second optical function combination block, c: the 3rd optical function combination block, 201: ordinary optic fibre, 202: the first polarization maintaining optical fibres, 203: diplopore kapillary, 204: the first condenser lenses, 205: sub-wave length grating, 206: the second condenser lenses, 207: single hole kapillary, 208: the second polarization maintaining optical fibres, 209: metal or plastic package shell, s1: nonpolarized light, s3: through the linearly polarized light of reflection, s2: through the linearly polarized light of transmission, β: the device y direction of polarized light beam splitting/bundling device.
Embodiment
Describe the utility model polarized light beam splitting/bundling device in detail below in conjunction with accompanying drawing.In the utility model in the instructions said optical axis direction if no specified otherwise, the fast and slow axis guarantor folk prescription that all refers to polarization maintaining optical fibre to, for simplicity be defined as optical axis direction.
Fig. 2, the 3rd, the utility model polarized light beam splitting/bundling device specific embodiment dependency structure synoptic diagram.Optical axis in the accompanying drawing be meant the fast and slow axis of polarization maintaining optical fibre protect folk prescription to.
Shown in Fig. 2,3, according to the optical tasks of bearing after its each components and parts or the components and parts combination, this polarized light beam splitting/bundling device can be regarded as comprising three functional blocks, i.e. the first optical function combination block a, the second optical function combination block b and the 3rd optical function combination block c.After the first optical function combination block a, the second optical function combination block b and the 3rd optical function combination block c three combine according to mode described below, by overall package in metal shown in Figure 3 or plastic casing 209
The formation part of the first optical function combination block a mainly includes ordinary optic fibre 201, first polarization maintaining optical fibre 202, diplopore kapillary 203 and first condenser lens 204.One end of the ordinary optic fibre 201 and first polarization maintaining optical fibre 202 inserts respectively in two pores of diplopore kapillary 203, their opposite end is suspended in the outside of diplopore kapillary 203 simultaneously with unrelated form, that is to say in two pores of diplopore kapillary 203 to be placed with the ordinary optic fibre 201 and first polarization maintaining optical fibre 202 respectively.
The second optical function combination block b comprises sub-wave length grating 205.The sub-wave length grating that sub-wave length grating 205 adopts U.S. NonoOpto company to release.This element has detailed report in " nano-fabrication technique industry a new generation optical element " literary composition of " optical communication " 2003 5 phases.It can be split up into the mutually perpendicular linearly polarized light of two bundle polarization states, i.e. radioparent polarized light and reflected ray polarized light to the nonpolarized light of institute's incident.
The 3rd optical function combination block c comprises second condenser lens 206, single hole kapillary 207 and second polarization maintaining optical fibre 208.One end of second polarization maintaining optical fibre 208 is plugged in the pore of single hole kapillary 207, and the opposite end is suspended in single hole kapillary 207 outsides, that is to say, is placed with second polarization maintaining optical fibre 208 in the pore of single hole kapillary 207.
The first optical function combination block a, the second optical function combination block b and the 3rd optical function combination block c are packaged in the metal or plastic casing 209 shown in Figure 3 simultaneously.Axis direction along package casing 209 shown in Figure 3, be the device y direction β of polarized light beam splitting/bundling device, three optical function combination block a, each self-contained optical component of b, c take following arrangement mode to be packaged in airtight conditions in the inner chamber of metal or plastic casing 209, and diplopore kapillary 203, first condenser lens 204, sub-wave length grating 205, second condenser lens 206 and single hole kapillary 207 are arranged in order according to order described herein.
The first optical function combination block a that constitutes by ordinary optic fibre 201, first polarization maintaining optical fibre 202, diplopore kapillary 203 and first condenser lens 204, and the 3rd optical function combination block c that constitutes by second condenser lens 206, single hole kapillary 207 and second polarization maintaining optical fibre 208, both are in the state that can rotate around this device longitudinal axis respectively with respect to the device y direction β of polarized light beam splitting/bundling device.Concrete rotating manner can be assembled into separate integration member to the first optical function combination block a, the second optical function combination block b and the 3rd optical function combination block c respectively, make its coupling loss minimum by the relative position of regulating above-mentioned three functional modules, by respectively the first optical function module a and the 3rd optical function module c being rotated around the longitudinal axis of the second optical function module b, respectively the extinction ratio of first polarization maintaining optical fibre 202 and second polarization maintaining optical fibre 208 in the device is transferred to the best.
During work, as shown in Figure 2, from the nonpolarized light s1 of ordinary optic fibre 201 input that is arranged in one of diplopore kapillary 203 hole through first condenser lens, 204 focussed collimated after, arrive sub-wave length grating 205.Sub-wave length grating 205 has the function that nonpolarized light s1 is split up into the mutually perpendicular two bunch polarized light s2 of its polarization state, s3.Two bunch polarized light s2, s3 are respectively that the linearly polarized light of sub-wave length grating 205 and the linearly polarized light that is reflected by sub-wave length grating 205 are crossed in transmission.Wherein, by the linearly polarized light s3 of sub-wave length grating 205 reflection through first condenser lens, 204 collimations after, enter first polarization maintaining optical fibre 202 in two holes that are arranged in diplopore kapillary 203; The linearly polarized light s2 that sub-wave length grating 205 is crossed in transmission through second condenser lens, 206 collimations after, enter second polarization maintaining optical fibre 208 that is arranged in single hole kapillary 207.Here, the nonpolarized light s1 that imports from the ordinary optic fibre one of diplopore kapillary 203 hole 201 is located between the linearly polarized light s3 of conduction in first polarization maintaining optical fibre 202 in two holes of diplopore kapillary 203, in sub-wave length grating 205, satisfy the light reflection law on their light path.
Under this design point, satisfy the light reflection law as long as lay respectively at the ordinary optic fibre 201 in 203 two pores of diplopore kapillary and the position of first polarization maintaining optical fibre 202, just can be coupled into optical fiber, and not have the matching problem that closes bundle angle and the two partially optical fiber emergent ray angles of guarantor of wollaston prism in original design with less consumption.And, in original design, need in two polarization maintaining optical fibre structures the optical axis direction of two polarization maintaining optical fibres to satisfy vertical condition and could obtain higher extinction ratio, cause pair polarization maintaining optical fibres to scrap easily for satisfying this configuration requirement.The utility model polarized light beam splitting/bundling device, its high extinction ratio can be by rotating the first optical function combination block a respectively and the 3rd optical function combination block c realizes, thereby improved utilization of materials.
In above-mentioned the utility model polarized light beam splitting/bundling device embodiment, first condenser lens 204 and second condenser lens 206 can adopt GRIN Lens or spherical lens respectively.
Claims (2)
1. polarized light beam splitting/bundling device, comprise the diplopore kapillary, first condenser lens, second condenser lens and single hole kapillary, described diplopore kapillary, described first condenser lens, described second condenser lens and described single hole kapillary are arranged in order along the device y direction of described polarized light beam splitting/bundling device, in one of described diplopore through hole capillaceous, be provided with first polarization maintaining optical fibre, it is characterized in that also comprising sub-wave length grating, described sub-wave length grating along the position of the device y direction of described polarized light beam splitting/bundling device between described first condenser lens and described second condenser lens, described diplopore through hole capillaceous two in be provided with ordinary optic fibre, in described single hole kapillary, be provided with second polarization maintaining optical fibre.
2. polarized light beam splitting/bundling device according to claim 1 is characterized in that the first optical function combination block that is made of described ordinary optic fibre, described first polarization maintaining optical fibre, described diplopore kapillary and described first condenser lens and the 3rd optical function combination block that is made of described second condenser lens, described single hole kapillary and described second polarization maintaining optical fibre is in the state that can rotate around it respectively with respect to the device longitudinal axis of described polarized light beam splitting/bundling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200571126U CN201096918Y (en) | 2007-09-13 | 2007-09-13 | Polarization optical branch bundle/merged bundle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200571126U CN201096918Y (en) | 2007-09-13 | 2007-09-13 | Polarization optical branch bundle/merged bundle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096918Y true CN201096918Y (en) | 2008-08-06 |
Family
ID=39923971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200571126U Expired - Lifetime CN201096918Y (en) | 2007-09-13 | 2007-09-13 | Polarization optical branch bundle/merged bundle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096918Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833129A (en) * | 2010-04-29 | 2010-09-15 | 哈尔滨工程大学 | Smelting embedded hollow multi-core polarization-preserving fiber and preparation method thereof |
| CN102621637A (en) * | 2012-04-11 | 2012-08-01 | 珠海保税区光联通讯技术有限公司 | Crystal polarization maintaining fiber coupler and manufacturing method thereof |
| CN102759398A (en) * | 2012-06-28 | 2012-10-31 | 北京国科世纪激光技术有限公司 | Device for measuring analyzed laser energy output by polarization maintaining optical fiber |
-
2007
- 2007-09-13 CN CNU2007200571126U patent/CN201096918Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833129A (en) * | 2010-04-29 | 2010-09-15 | 哈尔滨工程大学 | Smelting embedded hollow multi-core polarization-preserving fiber and preparation method thereof |
| CN102621637A (en) * | 2012-04-11 | 2012-08-01 | 珠海保税区光联通讯技术有限公司 | Crystal polarization maintaining fiber coupler and manufacturing method thereof |
| CN102759398A (en) * | 2012-06-28 | 2012-10-31 | 北京国科世纪激光技术有限公司 | Device for measuring analyzed laser energy output by polarization maintaining optical fiber |
| CN102759398B (en) * | 2012-06-28 | 2014-08-06 | 北京国科世纪激光技术有限公司 | Device for measuring analyzed laser energy output by polarization maintaining optical fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2237319C (en) | Device for focusing light through an optical component | |
| CN203630394U (en) | 1*N multichannel MEMS optical switch structure | |
| CN101876726B (en) | Multiplexing combined polarization-preserving fiber ring implementation method and polarization-preserving fiber ring | |
| CN204925448U (en) | 2 2 polarization maintaining fiber beam splitter | |
| WO2007061543A3 (en) | Compact collimator lens form for large mode area and low numerical aperture fiber laser applications | |
| WO2018173422A1 (en) | Optical branch module | |
| CN201096918Y (en) | Polarization optical branch bundle/merged bundle device | |
| EP1469283A3 (en) | Fiber optic gyroscope | |
| CN103163590A (en) | Two-core optical splitter | |
| CN2450678Y (en) | Polarizing buncher | |
| CN201532473U (en) | 2 multiplied by 2 polarization-maintaining optical fiber beam splitter | |
| Tottori et al. | Integrated optical connection module for 7-core multi-core fiber and 7 single mode fibers | |
| CN2798127Y (en) | Micro optical polarized beam splitting device | |
| CN103576240A (en) | Compact type four-port optical circulator | |
| CN102221729B (en) | Optics depolarizer | |
| CN101615761B (en) | Coherent beam combination all-fiber laser | |
| He et al. | Analysis of contributing factors in coupling from laser diode into optical fiber | |
| CN206270542U (en) | Transmission-type polarization-maintaining light splitting coupler | |
| CN203630395U (en) | 1*2 mechanical T type polarization-maintaining optical-switch structure | |
| CN201051160Y (en) | A polarization calibrator with high polarization output | |
| EP0874263A1 (en) | Optical circulator | |
| CN108761648B (en) | A kind of three ports light rings of hybrid integrated | |
| CN202075526U (en) | Photoisolator | |
| CN112083528A (en) | Bidirectional optical splitter and manufacturing method thereof | |
| CN220272953U (en) | Single-fiber bidirectional polarization maintaining optical fiber amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: United States Link Communications Technology Co., Ltd. Assignor: Oplink Communications Inc. Contract record no.: 2012990000229 Denomination of utility model: Polarization optical branch bundle/merged bundle device Granted publication date: 20080806 License type: Exclusive License Record date: 20120416 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080806 |
|
| CX01 | Expiry of patent term |