CN1152235C - Miniature optical resonant cavity - Google Patents
Miniature optical resonant cavity Download PDFInfo
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- CN1152235C CN1152235C CNB021110573A CN02111057A CN1152235C CN 1152235 C CN1152235 C CN 1152235C CN B021110573 A CNB021110573 A CN B021110573A CN 02111057 A CN02111057 A CN 02111057A CN 1152235 C CN1152235 C CN 1152235C
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- waveguide
- waveguides
- resonant cavity
- cavity
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- 230000003287 optical effect Effects 0.000 title claims abstract description 17
- 238000005452 bending Methods 0.000 abstract description 4
- 238000005549 size reduction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 229940085805 fiberall Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The present invention relates to a miniature optical resonant cavity which comprises a closed bending angle polygonal waveguide ring cavity and right angle bent turning waveguides with interface ports, wherein the closed bending angle polygonal waveguide ring cavity is enclosed by waveguides with reflectors, and the reflectors are arranged at the bent corners of the waveguides. The right angle turning waveguides are arranged at one side of the waveguide ring cavity or two opposite sides of the waveguide ring cavity, and one of the right angle turning waveguides is parallel to and coupled with a waveguide in the waveguide ring cavity. The optical resonant cavity can completely uses straight waveguides to form the bending angle polygonal ring resonant cavity because the reflectors are used, and the reflectors and the waveguides are combined into an integral whole body. Compared with the prior art, the size of the resonant cavity is not limited by a curvature radius. The size reduction not only can reduce loss, but also can bring convenience for integrating the optical resonant cavity to a chip to realize miniaturization.
Description
Technical field
The present invention relates to optical resonator.Be about the optical resonator in the resonance type optical gyroscope specifically.
Background technology
In resonance type optical gyroscope, optical resonator is the core devices of decision Gyro Precision and sensitivity, before the present invention makes, optical resonator adopts round fiber ring resonator and wave guide ring shaped resonant cavity mostly, because waveguide and optical fiber all have such characteristics, the loss of straight wave guide or direct light fibre is very little, when the radius-of-curvature of bending more little, the loss of light wave is just big more, like this, just limited too little that device size can not do, also adopted the method for integrated optics to be integrated on the chip with regard to having influenced device, can't practical requirement to the requirement of device miniatureization.
Summary of the invention
The purpose of this invention is to provide the miniature optical resonant cavity that a kind of light wave loss is little, be beneficial to microminiaturization.
Miniature optical resonant cavity of the present invention comprises closed knuckle polygonal waveguide ring cavity that is surrounded by the waveguide that is integrated with catoptron and the right-angle turning waveguide with port that is surrounded by the waveguide that is integrated with catoptron, said catoptron is located at waveguide knuckle place, the right-angle turning waveguide is in a side in wave guide ring chamber or in the relative both sides in wave guide ring chamber, have in the right-angle turning waveguide in a waveguide and the wave guide ring chamber a certain waveguide parallel, be coupled.
During work, light is along right-angle turning waveguide input and output, by the waveguide that is coupled, optically-coupled enters knuckle polygonal waveguide ring cavity, light in the waveguide is realized the change of direction around the corner by catoptron, when the light of the specific wavelength that meets condition of resonance (frequency) during, minimum or maximum light intensity output are arranged along the right-angle turning waveguide at ring cavity generation resonance.This resonance frequency has fixing interval (cycle), so can obtain the tuning curve of a harmonic peak or the appearance of paddy cycle.
Optical resonator of the present invention is because of using catoptron, be the polygonal ring resonator of knuckle so can adopt straight wave guide to constitute fully, and catoptron and waveguide are integrated integral body, compared with the prior art, the size of resonator cavity is not limited by radius-of-curvature, is beneficial to size to be done little, not only can reduce loss, also be easy to optical resonator is integrated on the chip, realize microminiaturized.
Description of drawings
Fig. 1 is a kind of concrete structure synoptic diagram of the present invention;
Fig. 2 is an another kind of concrete structure synoptic diagram of the present invention;
Fig. 3 is another concrete structure synoptic diagram of the present invention.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, optical resonator of the present invention comprises closed knuckle polygonal waveguide ring cavity 3 that is surrounded by the waveguide 2 that is integrated with catoptron 1 and the right-angle turning waveguide 4 with port that curves, catoptron is located at waveguide knuckle place, closed knuckle polygon can be an arbitrary shape, as Fig. 1 is triangle, Fig. 2 is a pentagon, and Fig. 3 is a rectangle.Fig. 1, example shown in Figure 2, right-angle turning waveguide 4 is positioned at a side in wave guide ring chamber 3, and a waveguide A in the right-angle turning waveguide 4 is parallel with a waveguide B in the wave guide ring chamber 3, is coupled, one in two waveguides of port is input waveguide, and another root is an output waveguide.As waveguide a is input waveguide, and waveguide b is an output waveguide.When under characteristic frequency resonance taking place, at waveguide b minimum light intensity output is arranged, this resonance frequency has fixing interval, so obtain the tuning curve that a resonance paddy cycle occurs.
Example shown in Figure 3, in the relative both sides of rectangular waveguide ring cavity 3, the waveguide A that is respectively equipped with in right-angle turning waveguide 4, the two right-angle turning waveguides is respectively parallel with the waveguide B in the wave guide ring chamber, is coupled.One of them right-angle turning waveguide is an input waveguide, and another right-angle turning waveguide is an output waveguide.As when the waveguide a in the right-angle turning waveguide is input waveguide, then the waveguide b in another right-angle turning waveguide is an output waveguide, in when, under characteristic frequency resonance taking place, at waveguide b maximum light intensity output is arranged, this resonance frequency has fixing interval, so obtain the tuning curve that a harmonic peak cycle occurs.
Claims (1)
1. miniature optical resonant cavity, it is characterized in that it comprises closed knuckle polygonal waveguide ring cavity [3] that is surrounded by the waveguide that is integrated with catoptron [1] [2] and the right-angle turning waveguide [4] with port that is surrounded by the waveguide that is integrated with catoptron [1] [2], said catoptron [1] is located at waveguide knuckle place, right-angle turning waveguide [4] is in a side of wave guide ring chamber [3] or in the relative both sides of wave guide ring chamber [3], have in the right-angle turning waveguide [4] waveguide [A] parallel with a certain waveguide [B] in the wave guide ring chamber, be coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021110573A CN1152235C (en) | 2002-03-13 | 2002-03-13 | Miniature optical resonant cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021110573A CN1152235C (en) | 2002-03-13 | 2002-03-13 | Miniature optical resonant cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1367372A CN1367372A (en) | 2002-09-04 |
| CN1152235C true CN1152235C (en) | 2004-06-02 |
Family
ID=4741374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021110573A Expired - Fee Related CN1152235C (en) | 2002-03-13 | 2002-03-13 | Miniature optical resonant cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1152235C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100839969B1 (en) * | 2006-11-03 | 2008-06-19 | 중앙대학교 산학협력단 | Micro resonator sensor |
| CN105352491A (en) * | 2015-11-16 | 2016-02-24 | 中国电子科技集团公司第四十九研究所 | Y-waveguide structure for fiber-optic gyroscope light path extension |
-
2002
- 2002-03-13 CN CNB021110573A patent/CN1152235C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1367372A (en) | 2002-09-04 |
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| SE01 | Entry into force of request for substantive examination | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |