CN101299075A - Adjustable optical filter optical structure and spectrum analyzer with the same - Google Patents
Adjustable optical filter optical structure and spectrum analyzer with the same Download PDFInfo
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- CN101299075A CN101299075A CNA2008100986123A CN200810098612A CN101299075A CN 101299075 A CN101299075 A CN 101299075A CN A2008100986123 A CNA2008100986123 A CN A2008100986123A CN 200810098612 A CN200810098612 A CN 200810098612A CN 101299075 A CN101299075 A CN 101299075A
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Abstract
The present invention provides an optical structure of an adjustable color filter and a spectrum analyzer with the structure. The structure adopts an integrated or a semi-integrated complex cavity standard tool. The structure uses a thermo-optic effect, an electro-optical effect or a mechanical rotating type and changes the arm length of the standard tool to realize the adjustable wavelength of transmitted light in the range of wide wavelength. The optical structure of the adjustable color filter is prepared with the principle of Michelson interferometer and has the characteristics of simple structure, small volume and low manufacturing cost.
Description
Technical field
The present invention relates to a kind of optical texture, refer to a kind of adjustable optical filter optical of output light wavelength and spectroanalysis instrument especially with this structure.
Background technology
At optical-fibre communications field, adjustable filter plate is a kind of important wavelength detecting element.One document number is that the invention patent application of CN1811494A discloses a kind of multi-channel position independent adjustable optical filter based on fractal structure, it is based on the F-P filter sheet structure, design by fractal rule, obtain the independent adjustable binary channels of channel position, triple channel even the optical filter of hyperchannel number more.This adjustable optical filter comprises: substrate, be equipped with film system on the substrate by vacuum coating, and wherein the film of binary channels optical filter is:
(HL)mαH(LH)mβL(HL)mαH(LH)m，
Or (LH) m α L (HL) m β H (LH) m α L (HL) m,
In the formula (HL) m or (LH) m be reflectance coating system (2), α H or α L are wall (3), β L or β H are wall (4), H is a high refractive index layer, and L is a low-index film, and the optical thickness of L and H rete is respectively λ 0/4, λ 0 is a design wavelength, m is L and H alternative stacked number of times, m 〉=2, and α and β are the peak position factor;
The three-way optical filter film is:
(HL) m α H (LH) m β L (HL) m α H (LH) m γ L (HL) m α H (LH) m β L (HL) m α H (LH), or (LH) m α L (HL) m β H (LH) m α L (HL) m γ H (LH) m α L (HL) m β H (LH) m α L (HL) m, wherein α, β and γ are the peak position factor, and γ L or γ H are wall (5);
And the like, by above-mentioned fractal rule, can also design 4,5, n channel membrane system.
Above-mentioned adjustable optical filter is by being provided with wall on substrate, and plates different retes and realize that output light wavelength is adjustable, and structure is complicated, the cost height.
Summary of the invention
The technical problem to be solved in the present invention is: the problem that exists at above-mentioned adjustable optical filter designs a kind of adjustable optical filter optical, and it is simple in structure, volume is little, low cost of manufacture.
Technical scheme of the present invention is: a kind of adjustable optical filter optical, this structure are by two reflective optical devices and the composite monolithic interference piece that the beam splitting optical element constitutes; The plane at described two reflective optical devices places is vertical mutually, and the plane at described beam splitting optical element place and the Plane intersects at described two reflective optical devices places are angled; By moving described interference piece and the tuning output light wavelength of incident light relative position.
A kind of adjustable optical filter optical, this structure is interfered piece for the composite monolithic that is made of two reflective optical devices, beam splitting optical element and square crystal; The plane at described two reflective optical devices places is vertical mutually, and the plane at described beam splitting optical element place and the Plane intersects at described two reflective optical devices places are angled; Described square crystal is electro-optic crystal, hot luminescent crystal or similar crystal, and at least one reflective optical devices is located on the end face of described square crystal with the form of plated film; Thermal tuning output light wavelength by voltage on the change electro-optic crystal or hot luminescent crystal.
A kind of adjustable optical filter optical, this structure is interfered piece for being bondd or be glued at the composite monolithic that constitutes on the fixed support of band through hole by two reflective optical devices and a beam splitting optical element; The plane at described two reflective optical devices places is vertical mutually, and the plane at described beam splitting optical element place and the Plane intersects at described two reflective optical devices places are angled; At least establish an optical element in the described through hole, described optical element is electro-optic crystal, hot luminescent crystal or similar crystal, or rotatable parallel plain film; By the temperature of the voltage on the change electro-optic crystal, hot luminescent crystal or the angle tuning output light wavelength of parallel plain film.
A kind of wide region is measured the spectroanalysis instrument of output light wavelength, and this spectroanalysis instrument has one group of described compound etalon of technique scheme, and total input end of described compound etalon is provided with multichannel beam splitter system.
The invention has the beneficial effects as follows: the present invention adopts integrated or semi-monolithic Compound Cavity etalon, utilize thermo-optic effect, electrooptical effect or mechanical rotation formula, change the etalon brachium, realize that the transmitted light wavelength is adjustable in the wide wavelength coverage, it is made according to the Michelson interferometer principle, have simple in structure, volume is little, the characteristics of low cost of manufacture.
Description of drawings
Fig. 1 is the first embodiment of the invention structural representation;
Fig. 2 a is the second embodiment of the invention first improved procedure structural representation;
Fig. 2 b is the second embodiment of the invention second improved procedure structural representation;
Fig. 3 a is the first improved procedure structural representation of third embodiment of the invention;
Fig. 3 b is the second improved procedure structural representation of third embodiment of the invention;
Fig. 3 c is the 3rd an improved procedure structural representation of second embodiment of the invention;
Fig. 3 d is the 3rd an improved procedure structural representation of third embodiment of the invention;
Fig. 3 e is the 4th an improved procedure structural representation of third embodiment of the invention;
Fig. 3 f is the 5th an improved procedure structural representation of third embodiment of the invention;
Fig. 4 is the fourth embodiment of the invention structural representation.
Embodiment
At optical-fibre communications field, adjustable filter plate is a kind of important wavelength detecting element.The present invention adopts integrated or semi-monolithic Compound Cavity etalon, utilizes thermo-optic effect, electrooptical effect or mechanical rotation formula, changes the etalon brachium, realizes that the transmitted light wavelength is adjustable in the wide wavelength coverage, and it is made according to the Michelson interferometer principle.
As shown in Figure 1, adjustable optical filter optical of the present invention is by two reflective optical devices and the composite monolithic interference piece that the beam splitting optical element constitutes, this interference piece main body is a triangular prism group 102, it is formed by triangular prism 102A, the 102B bonding or the gummed that are coated with face, one of them reflective optical devices is that total reflection face S1 is located on the right side of triangular prism 102B, another reflective optical devices is that total reflection face S2 is located on the lower surface of triangular prism 102A, and the beam splitting optical element is that partial reflection face S3 is located on the inclined-plane of triangular prism 102B.Described total reflection face S1, S2 are vertical mutually, and partial reflection face S3 and described total reflection face S1, S2 intersect certain angle.Total reflection face S1, S2 and partial reflection face S3 promptly constitute Michelson interferometer formula Compound Cavity, and its effective optical path equivalent thickness is | and the etalon of L2 one L1|, its frequency interval are c/2L2-L1|.Then should make as if wishing that tuning bandwidth is wide more | the L2-L1| spacing value is more little, promptly changes | and the L2-L1| value makes simultaneously with tuning interference wavelength | and the L2-L1| spacing value satisfies required tuning bandwidth, to realize the purpose of whole tuning output light wavelength.A branch of complex light is collimated into directional light by optical alignment mirror 101 and incides that to interfere piece be triangular prism group 102, is tunable output light wavelength by the relative position that moves described interference piece and incident directional light.The glue that gummed or bonding are adopted should have good optical performance, cohesive strength, heat conductivility and thermotolerance, such as adopting a kind of of UV photosensitive glue, epoxy glue or other similar optical cement, also can adopt two or more epoxy glue of above-mentioned glue; Also can adopt optical cement or in-depth optical cement technology to glue together between each optical element.Optical element 103 is located at the left side of triangular prism 102A equally in the mode of bonding or gummed.In addition, angle of wedge sheet bonding or be glued at and interfere the piece right side to be calibrated shown in Fig. 3 c with nonparallelism to etalon.
Fig. 2 a, 2b are depicted as the adjustable optical filter second embodiment optical texture of the present invention, different with first embodiment is: described interference piece also comprises a square crystal, it is located at the lower surface of interfering piece with bonding or gummed mode, described square crystal is hot luminescent crystal 105, electro-optic crystal 106 or similar crystal, and total reflection face S2 is located on the lower surface of described square crystal in the mode of plated film.So just interfering one of them arm introducing a slice thermal expansivity of piece and refractive index to vary with temperature big plain film instant heating luminescent crystal 105, to pass through the adjustment output light wavelength, the temperature of wherein hot luminescent crystal 105 is controlled by TEC; Similarly, be electro-optic crystal 106 interfering one of them arm of piece to introduce a slice refractive index with the big plain film of change in voltage, change the difference of interfering the piece brachium by changing voltage system, to regulate output light wavelength.
Shown in Fig. 3 a, 3b, 3d, 3e, 3f, adjustable optical filter the 3rd embodiment optical texture of the present invention, this structure is interfered piece for being bondd or be glued at the composite monolithic that constitutes on the fixed support 102C of band through hole by two reflective optical devices and a beam splitting optical element, its pedestal is the fixed support 102C of band through hole, and the general employing of fixed support 102C has good cohesive strength, heat conductivility and stable on heating metal material or optical material is made.Described fixed support 102C is located at four angles of interfering space, piece place, and described through hole is " ten " font chamber.The upper left corner, the other end that the end that beam splitting optical element 102E that tilts that is part are launched eyeglass S3 is located at fixed support 102C is located at the lower right corner of fixed support 102C.Reflective optical devices 102G that is launch eyeglass S2 entirely and be fixed on the lower surface of fixed support 102C in the mode of gummed, another reflective optical devices 102F that is launch eyeglass S1 also is fixed on fixed support 102C in the mode of gummed right flank entirely.The lower surface of described fixed support 102C and right flank are orthogonal, establish an optical element 107,108 in the described through hole at least, and described optical element 107,108 is electro-optic crystal, hot luminescent crystal or similar crystal, or rotatable parallel plain film; By the temperature of the voltage on the change electro-optic crystal, hot luminescent crystal or the angle tuning output light wavelength of parallel plain film.
Shown in Fig. 3 a, first improved procedure of third embodiment of the invention, the vertical part in described fixed support 102C " ten " font chamber is provided with optical element 107 near reflective optical devices 102G place, described optical element 107 is electro-optic crystal, hot luminescent crystal or similar crystal, it is located on the arm of etalon, thereby changes the tuning output light wavelength of etalon brachium by the temperature that changes the voltage on the electro-optic crystal, hot luminescent crystal.Similarly, the horizontal component in described fixed support 102C " ten " font chamber is provided with optical element 108 near reflective optical devices 102F place, described optical element 108 is rotatable parallel plain film, generally select for use and have certain thickness optics plain film, its rotational angle can be regulated in a big way | the L2-L1| value, and with adjustment criteria tool bandwidth.So just by changing | the L2-L1| value makes simultaneously with tuning interference wavelength | and the L2-L1| spacing value satisfies required tuning bandwidth, realizes the purpose of whole tuning output light wavelength.
Shown in Fig. 3 b, second improved procedure of third embodiment of the invention, with mode shown in Fig. 3 a different be to be provided with the globe joint that constitutes by episphere 102H and lower semisphere 102I between the lower surface of the upper surface of reflective optical devices 102G and fixed support 102C.So just can obtain the light of required wavelength by, the adjusting of two or three in optical element 107, optical element 108 or the globe joint.
Shown in Fig. 3 e, the 3rd improved procedure of third embodiment of the invention, with mode shown in Fig. 3 a different be, only on the public arm of etalon, establish optical element 107, so just can change pair etalon brachiums simultaneously, synchronous continuous sweep transmission peak wavelength.
Shown in Fig. 3 f, the 4th improved procedure of third embodiment of the invention, the branch road of two etalons is respectively equipped with optical element 107A, 107B.Change in the time of optical element 107A and 107B, can guarantee that etalon two arm light paths change synchronously, but make whole etalon continuous sweep transmission peak wavelength.
Shown in Fig. 3 d, the 5th improved procedure of third embodiment of the invention, an angle of wedge sheet bond or are glued at and interfere the piece right side to be calibrated with the nonparallelism to etalon.
As shown in Figure 4, fourth embodiment of the invention is one group of compound etalon.For measuring the wavelength of different-waveband simultaneously, can establish compound etalon 4021,4022,4023......, the 402n of one group of scanning different-waveband, its single etalon can be among first to fourth embodiment any one.Just the total input end at described compound etalon is provided with multichannel beam splitter system 401.Remove among the incident light λ 00+ λ 01+ λ 02+ λ 0n treat laser λ 00 that photometry λ 01, λ 02, λ 0n also comprise one group of standard wavelength's locking as with reference to light to demarcate compound etalon.So then constitute wide region and measure the spectroanalysis instrument of output light wavelength, i.e. OCM.
Claims (10)
1, a kind of adjustable optical filter optical and spectroanalysis instrument with this structure is characterized in that: this structure is interfered piece for the composite monolithic that is made of two reflective optical devices and beam splitting optical element; The plane at described two reflective optical devices places is vertical mutually, and the plane at described beam splitting optical element place and the Plane intersects at described two reflective optical devices places are angled; By moving described interference piece and the tuning output light wavelength of incident light relative position.
2, a kind of adjustable optical filter optical according to claim 1 and spectroanalysis instrument with this structure, it is characterized in that: described interference piece main body is triangular prism group (102), it is formed by the triangular prism that is coated with face (102A, 102B) bonding or gummed, one of them reflective optical devices (S1) is located on the right side of triangular prism (102B), another reflective optical devices (S2) is located on the lower surface of triangular prism (102A), and beam splitting optical element (S3) is located on the inclined-plane of triangular prism (102B).
3, a kind of adjustable optical filter optical according to claim 1 and spectroanalysis instrument with this structure is characterized in that: this structure can also be interfered piece for the composite monolithic that is made of two reflective optical devices, beam splitting optical element and square crystal; The plane at described two reflective optical devices places is vertical mutually, and the plane at described beam splitting optical element place and the Plane intersects at described two reflective optical devices places are angled; Described square crystal is electro-optic crystal, hot luminescent crystal or similar crystal, and at least one reflective optical devices is located on the end face of described square crystal with the form of plated film; Thermal tuning output light wavelength by voltage on the change electro-optic crystal or hot luminescent crystal.
4, a kind of adjustable optical filter optical according to claim 3 and spectroanalysis instrument with this structure is characterized in that: the periphery of described interference piece is provided with the TEC of its temperature of control.
5, a kind of adjustable optical filter optical according to claim 1 and spectroanalysis instrument with this structure is characterized in that: this structure can also be for by two reflective optical devices and a beam splitting optical element bonding or be glued at the composite monolithic that constitutes on the fixed support of band through hole and interfere piece; The plane at described two reflective optical devices places is vertical mutually, and the plane at described beam splitting optical element place and the Plane intersects at described two reflective optical devices places are angled; At least establish a square crystal in the described through hole, described square crystal is electro-optic crystal, hot luminescent crystal or similar crystal; Thermal tuning output light wavelength by voltage on the change electro-optic crystal or hot luminescent crystal.
6, a kind of adjustable optical filter optical according to claim 5 and spectroanalysis instrument with this structure, it is characterized in that: described fixed support (102C) is located at four angles of interfering space, piece place, its lower surface is vertical mutually with right flank, and described through hole is " ten " font chamber.
7, a kind of adjustable optical filter optical according to claim 6 and spectroanalysis instrument with this structure, it is characterized in that: the vertical part in described " ten " font chamber locates to be provided with optical element (107) near reflective optical devices (102G), described optical element (107) is an electro-optic crystal, hot luminescent crystal or similar crystal, it is located on the arm of etalon, the horizontal component that is somebody's turn to do " ten " font chamber locates to be provided with optical element (108) near reflective optical devices (102F), described optical element (108) is generally selected for use to have certain thickness optics plain film for rotatable parallel plain film.
8, a kind of adjustable optical filter optical according to claim 7 and spectroanalysis instrument with this structure is characterized in that: be provided with the globe joint that is made of episphere (102H) and lower semisphere (102I) between the lower surface of the upper surface of described reflective optical devices (102G) and fixed support (102C).
9, according to any one described a kind of adjustable optical filter optical of claim 1 to 8 and spectroanalysis instrument with this structure, it is characterized in that: an angle of wedge sheet is located in the mode of bonding or gummed interferes the piece right side.
10, a kind of wide region is measured the spectroanalysis instrument of output light wavelength, and it is characterized in that: this spectroanalysis instrument has one group of described compound etalon of technique scheme, and total input end of described compound etalon is provided with multichannel beam splitter system.
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| CN2008100986123A CN101299075B (en) | 2008-05-30 | 2008-05-30 | Adjustable optical filter optical structure and spectrum analyzer with the same |
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| CN2008100986123A CN101299075B (en) | 2008-05-30 | 2008-05-30 | Adjustable optical filter optical structure and spectrum analyzer with the same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116917A (en) * | 2011-01-19 | 2011-07-06 | 四川欧瑞特光电科技有限公司 | Optical cement method for optical element and implementation thereof in pyramid array |
| CN103809166A (en) * | 2014-01-20 | 2014-05-21 | 浙江大学 | Resonant frequency locking device and method for Michelson interference type spectrum filter |
| CN103838008A (en) * | 2012-11-21 | 2014-06-04 | 福州高意通讯有限公司 | Tunable filter |
| CN111262123A (en) * | 2018-11-30 | 2020-06-09 | 福州高意通讯有限公司 | Flexible grid double-standard wavelength locker |
| CN111487723A (en) * | 2014-03-07 | 2020-08-04 | 艾易珀尼斯公司 | Method and system for wavelength tunable optical components and subsystems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4671613A (en) * | 1985-11-12 | 1987-06-09 | Gte Laboratories Inc. | Optical beam splitter prism |
| CN2583691Y (en) * | 2002-07-02 | 2003-10-29 | 中国科学院长春光学精密机械与物理研究所 | Optical group set filter |
| CN2591651Y (en) * | 2002-07-02 | 2003-12-10 | 中国科学院长春光学精密机械与物理研究所 | Optical comb type filter |
| CN1169317C (en) * | 2002-07-02 | 2004-09-29 | 中国科学院长春光学精密机械与物理研究所 | Optical group filter |
| CN100476505C (en) * | 2003-07-18 | 2009-04-08 | 晶荧光学科技有限公司 | Three dimension/two dimension switchable color projection display device and method thereof |
| CN100439884C (en) * | 2003-08-01 | 2008-12-03 | 天津理工学院 | Correlator device for monocycle-subcycle light pulse duration and its measuring method |
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2008
- 2008-05-30 CN CN2008100986123A patent/CN101299075B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116917A (en) * | 2011-01-19 | 2011-07-06 | 四川欧瑞特光电科技有限公司 | Optical cement method for optical element and implementation thereof in pyramid array |
| CN103838008A (en) * | 2012-11-21 | 2014-06-04 | 福州高意通讯有限公司 | Tunable filter |
| CN103838008B (en) * | 2012-11-21 | 2017-03-01 | 福州高意通讯有限公司 | A kind of tunable optic filter |
| CN103809166A (en) * | 2014-01-20 | 2014-05-21 | 浙江大学 | Resonant frequency locking device and method for Michelson interference type spectrum filter |
| CN103809166B (en) * | 2014-01-20 | 2016-08-17 | 浙江大学 | A kind of Michelson interference type spectral filter resonant frequency locking device and method |
| CN111487723A (en) * | 2014-03-07 | 2020-08-04 | 艾易珀尼斯公司 | Method and system for wavelength tunable optical components and subsystems |
| CN111262123A (en) * | 2018-11-30 | 2020-06-09 | 福州高意通讯有限公司 | Flexible grid double-standard wavelength locker |
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| CN101299075B (en) | 2010-12-08 |
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