CN2834033Y - Wave guide optional wavelength wave division multiplexer/demultiplexer - Google Patents
Wave guide optional wavelength wave division multiplexer/demultiplexer Download PDFInfo
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- CN2834033Y CN2834033Y CN 200520122867 CN200520122867U CN2834033Y CN 2834033 Y CN2834033 Y CN 2834033Y CN 200520122867 CN200520122867 CN 200520122867 CN 200520122867 U CN200520122867 U CN 200520122867U CN 2834033 Y CN2834033 Y CN 2834033Y
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Abstract
The utility model relates to a wavelength division multiplexing /demultiplexing device which has random selection for required wavelength. The utility model comprises a substrate, a cladding, a bus signal waveguide transmitting passage, a plurality of single wavelength waveguide transmitting passage, a plurality of miniature resonant rings and a plurality of phase modulators. By using an outside electrical signal, the refractivity of a wave guide miniature resonant ring and two orthogonal inputting and outputting straight wave guides are modulated, so the wave guide miniature resonant ring satisfies a wavelength optical signal with a resonance condition and resonance is formed in two orthogonal inputting and outputting straight wave guides. The resonant optical signal is output by an outputting straight waveguide, and in the utility model, miniature resonant rings with different wavelengths are designed on the resonance position with different wavelengths, so the refractivity of a core layer of the miniature resonant ring is higher than that which is required by the resonance condition. When an outside electrical signal is applied to the miniature resonance ring, the refractivity of the miniature resonant ring satisfies the condition which is required by the wavelength of the passage and resonance output is formed at different positions for different wavelengths.
Description
Technical field
The utility model belongs to wavelength-division demultiplexing based on the guide technology device that combines with switch, be particularly related to desired wavelength is had at any time optionally technology, thereby on realizing the optical signalling passage that will operate carried out/the wavelength signals selector of down operation.
Background technology
Optical WDM/demultiplexing device is modern optical communication, one of core devices in optical sensing and the optical Information Processing, be that the physical characteristic that makes full use of optical signalling enlarges the effective way of optical information amount, thereby in the modern optical electronic information field, developed greatly and application widely.Yet, optical wavelength division demultiplexing technology also is not enough to realize the selection control to light signal, it must combine with optical switching technique could be in multi-wavelength system such as optical communication, in optical sensing and the optical Information Processing a specific light signal being carried out/download and operation such as exchange.The effect of the light shutter device here is on the different optical wavelength signals that spatially launched by wavelength-division demultiplexing technology are carried out the certain wavelengths signal as required/down operation, can be one, a plurality of or all signal.Like this, not only caused the complexity of system and cost too high, but also cause all signals on this/inhomogeneous and energy loss after the down operation.In above mentioned multi-wavelength signals optical system, with the wavelength be on the light signal of channel spacing/down operation is the most general operation of fundamental sum, if this operation can be finished by a simple Devices, the structure of system and cost all can be vastly improved.
Traditional reflective gratings, develop into the interferometric filter type, these traditional wavelength division multiplexing/demultiplexing technical methods have been brought into play important effect in enlarging optical communication and optical Information Processing capacity, and be widely used for many years, even still in some optical communications, light sensing and optical information processing system, bringing into play now and acting on.But the common defects of these traditional wavelength division multiplexing/demultiplexing technology is that the wavelength channel number that is produced is limited, and volume is bigger, thereby make the performance and price of product poor, especially along with the develop rapidly of the field of opto-electronic information, application system or environment are more and more higher to the requirement of the aspects such as port number, device volume and cost of manufacture of Wavelength division multiplexer/demultiplexer spare.
The optical waveguide technique of various materials, especially superiority and maturation processing technology aspect of optical waveguide technique on the optical passive component physical property based on silica material successfully produced a novel high density wavelength division multiplexing/demultiplexing technology (DWDM).Thereby, original wavelength channel number, is increased sharply to 16,40 and 64 wavelength channels below 8 by original, this Wavelength division multiplexer/demultiplexer spare is exactly array waveguide grating (AWG).At present, AWG has been widely applied in the industrial system, and this is the impressive progress that the integrated light guide technology is used in the modern optical electronic information, and has promoted other related device thus, as switch, and the development of devices such as filter.The success of AWG and extensive use have been established favourable basis for this field to the development of high-speed, high information quantity and small integrated system.
As previously mentioned, the function of Wavelength division multiplexer/demultiplexer spare is that the spatial channel with different optical wavelength signals is incorporated into a passage or its anti-process.It is to take out one or several signal to exchange, communicate by letter, survey and information operating such as decoding from all multi-wavelength passages that the space that is produced by wavelength-division demultiplexing process separates that optical system is utilized the purpose of this function.And the wavelength signals that other are not utilized sends back in the original bus run through the wavelength division multiplexing process and goes.The approach of present industrial this process of realization is to utilize existing Wavelength division multiplexer/demultiplexer spare (as AWG), combine with narrow-band pass filter, promptly desirable wavelength signals is stayed, and other wavelength signals send back in the fiber buss passage, this process had both caused the complexity of system itself, had caused the raising of system cost again.In addition, caused that also other does not have the not due optical loss of adopted optical wavelength signal.For example, this method necessarily needs two AWG, and one is used to produce wavelength-division demultiplexing effect, and another is used to produce the wavelength division multiplexing effect.Therefore, if a wavelength division multiplex device can be brought into play wavelength division multiplexing and wavelength-division demultiplexing effect simultaneously, and only one or several required wavelength signals is produced this effect, this device will have important application prospects in the multi-wavelength optical information system.
Realizing the Wavelength division multiplexer/demultiplexer spare that wavelength can not be selected with the filter action of waveguide miniature resonant ring, number has been elaboration in miniature resonant ring wavelength division multiplexer of polymer of 200510016932.6 and preparation method thereof in our another patent application.
Summary of the invention
For solve optical wavelength signal in the above-mentioned wavelength-division multiplex system on/download and selection operation process complexity, cost is too high, can not carry out the certain wavelengths signal as required on/problem of down operation, the purpose of this utility model is to utilize the phase modulated of waveguide device and the filter action of miniature resonant ring to propose a kind of selectable Wavelength division multiplexer/demultiplexer spare of wavelength that has.
The utility model utilizes guide technology to propose the selectable Wavelength division multiplexer/demultiplexer spare of a kind of wavelength, and it comprises substrate, covering, bus signals waveguide passage, single wavelength waveguide passage, miniature resonant ring, phase-modulator; Total wavelength channel number of single wavelength waveguide passage is n, and single wavelength waveguide passage is respectively applied for n wavelength signals λ-k of transmission; Be used to select the miniature resonant ring of n wavelength signals; Be used to change the phase-modulator of miniature resonant ring refractive index structures; Contain bus signals waveguide passage and single wavelength waveguide passage in the inside of covering, the lower surface of covering is fixedlyed connected with the upper surface of substrate, the lower surface of miniature resonant ring and phase-modulator is fixedlyed connected with the upper surface of covering, bus signals waveguide passage and the vertical placement mutually of single wavelength waveguide passage, the miniature resonant ring is positioned at the place, crosspoint of bus signals waveguide passage and single wavelength waveguide passage, is equipped with the miniature resonant ring in phase-modulator inside.
In the device of background technology, on the optical wavelength signal/down operation is indispensable in optical communication, light sensing and the information processing system.Traditional as previously mentioned method, even the method for institute's extensive use at present remains and utilizes combining of wavelength division multiplex device and optical switch, also requires to have optical filter to assist mutually with attenuator simultaneously.Like this, not only caused the complexity of system, and cost is too high.Therefore, in the past for many years in, based on the optical integrated device of slab guide technology, for example in optical wavelength division multiplex systems, especially in the optical communication system, be the object of looking forward to, industrial quarters and R﹠D institution also never stopped the research and development to this type of device simultaneously always.The research and development of being reported at present based on the integrated device of slab guide technology are integrated around successful wavelength division multiplex device: AWG, optical switch, adjustable optical attenuator and filter.Wherein, AWG is used for spatially multi-wavelength signals being separated; or its anti-process; optical switch be used for to selected signal/down operation; the effect of adjustable optical attenuator is to decay to the power identical with other original signal uploading wavelength signals; with the sensitive detection parts of protection back, filter is used for the signal of downloading is carried out filtering, to obtain the more signal of narrow bandwidth.
Wavelength signals selector in the utility model is to adopt straight wave guide and miniature resonant ring, wherein one to import straight wave guide be the bus that bus signals waveguide passage is used as light signal, carry out input and light signal the transmission upload after of light signal before download.Many straight wave guide outputs that intersect vertically with bus signals waveguide channel vertical or standard are the transmission line that single wavelength waveguide passage is used as single wavelength light signal, download the output of each wavelength signals of back or upload preceding input.Straight wave guide can be in two different ducting layers with the miniature resonant ring, and the resonant process of optical wavelength signal is based on vertical coupled between the two-layer waveguide.Yet, straight wave guide used in the utility model is different with wave resonator traditional or existing straight wave guide and miniature resonant ring formation with the resonator that the miniature resonant ring constitutes, above-mentioned traditional or existing resonator directly designs on a certain wavelengths, no matter whether need this wavelength output, this wavelength signals all will be exported, and is the selection of a passive type wavelength signals.And the utility model at first designs the miniature resonant ring to different wave length on the resonance location of different wave length, and make the desired refractive index height of the refractive index ratio condition of resonance of miniature resonant cyclic core layer, when the extraneous signal of telecommunication puts on the miniature resonant ring, make the refractive index of miniature resonant ring satisfy the desired condition of wavelength of this passage, promptly different wave length is formed resonance output at diverse location.Only design an output wavelength in the free spectral range of each miniature resonant ring, and this wavelength is only by means of realizing resonance output behind the extraneous modulating action.Like this, device of the present utility model is all much superior than other similar device at aspects such as structure, cost and ranges of application.
Main application of the present utility model: 1) can carry out the certain wavelengths signal as required on/down operation, be used for optical communication system; 2) can be used in the optical information processing system multi-wavelength signals selectively parallel filtering handle; 3) can be used for the modern times based in coupling of the signal in the optical fiber sensing system of multichannel wavelength division multiplexing technology and the discriminating processing.The utility model not only can make the designs simplification of these application systems in application, reduce cost, and can also play a role at aspects such as flexibility and intellectualities.Along with modern optical communication, light sensing and information processing system develop rapidly and use popularize, high-speed, big capacity and integrated-type device are absolutely necessary, and also are the trend of development in the future.
Description of drawings
Fig. 1 a is that double-deck waveguide device structural front view of the present utility model also is a Figure of abstract
Fig. 1 b is that the A-A of Fig. 1 a is to cutaway view
Fig. 2 a is an individual layer waveguide device structural front view of the present utility model
Fig. 2 b is Fig. 2 a structure cutaway view
Fig. 3 is that light signal is externally modulated the control principle process of resonance output down
Fig. 4 a is the electrode schematic diagram of the utility model double-deck waveguiding structure when hot light modulation
Fig. 4 b is the electrode schematic diagram of the utility model double-deck waveguiding structure when electrooptic modulation
Fig. 5 a is the electrode schematic diagram of the utility model individual layer waveguiding structure when hot light modulation
Fig. 5 b is the electrode schematic diagram of the utility model individual layer waveguiding structure when electrooptic modulation
Embodiment
The utility model is to utilize the extraneous signal of telecommunication to modulate the refractive index of waveguide miniature resonant ring and two orthogonal inputs, straight wave guide output, the wavelength light signal that makes the miniature resonant ring satisfy condition of resonance forms resonance at two orthogonal inputs, straight wave guide output, make the light signal of straight wave guide output export resonance, thereby make Wavelength division multiplexer/demultiplexer spare have the selectivity of wavelength.Selected wavelength value depends primarily on refringence in radius, waveguide size and the waveguiding structure of miniature resonant ring etc. in the method for the present utility model, for example the radius of miniature resonant ring is chosen as 10 μ m-50 μ m, select the waveguide size according to different materials, for example polymeric material waveguide size is at 2 μ m-4 μ m, and semi-conducting material waveguide size is at 0.3 μ m-3 μ m.Like this, design pairing miniature resonant ring structure at the wavelength value of desired each passage in the wavelength division multiplex device, thereby can produce resonance in different positions by external control each passage.For reaching this purpose, the miniature resonant ring will be reserved a pre-value partially when design, even the light refractive index difference of miniature resonant ring and condition of resonance have certain deviation.When the miniature resonant ring is selected hot luminescent material, its refractive index is subjected to the external modulation Temperature Influence bigger, so the utility model utilizes the external heat light modulating method to eliminate the difference of waveguiding structure and condition of resonance, thereby makes the wavelength division multiplexing/demultiplexing effect of device have alternative.
If the total wavelength channel number of the utility model is n, be respectively applied for n wavelength signals λ-1 of transmission, λ-2 ..., λ-k ..., λ-n, k=1,2,3,4 ... n;
The utility model structure comprises substrate 1, covering 2, bus signals waveguide passage 3, several single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n is used to select several miniature resonant rings 5-1 of n wavelength signals, 5-2 ..., 5-k ..., 5-n, be used to change several phase-modulators 6-1 of several miniature resonant rings 5-k refractive index structures, 6-2 ..., 6-k ..., 6-n adopts film metal circle ring;
Embodiment 1:
When the utility model adopts double-deck waveguiding structure as shown in Figure 1, bus signals waveguide passage 3 and single wavelength waveguide passage 4-1,4-2, ..., 4-k ..., 4-n is arranged in covering 2, miniature resonant ring 5-1,5-2, ..., 5-k ..., 5-n and phase-modulator 6-1,6-2 ..., 6-k ..., 6-n is positioned at the upper surface of covering 2;
As mentioned above when adopting hot light modulation shown in Fig. 4 a, phase-modulator 6-k adopts toroidal to be enclosed within the outside of miniature resonant ring 5-k; Shown in Fig. 4 b, phase-modulator 6-k adopts outer toroid shape and interior toroidal to do positive pole and the negative pole that adds the signal of telecommunication when adopting electrooptic modulation.
For double-deck waveguiding structure shown in Figure 1:
When adopting hot optical modulations, covering 2, bus signals waveguide passage 3, single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n, miniature resonant ring 5-1,5-2 ..., 5-k ..., the material of 5-n can be a polymer, also can be semiconductor.Its processing step is: the bottom of 1) doing covering 2 in substrate 1; 2) utilize mask plate and photoetching technique to make waveguide channels and constitute bus signals waveguide passage 3 and single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n; 3) do the middle part of covering 2, this middle part is also referred to as separator; 4) on separator, be miniature resonant ring 5-1 by another mask plate and photoetching technique again, 5-2 ..., 5-k ..., 5-n; 5) do the top of covering 2, this top is also referred to as resilient coating; 6) be phase-modulator 6-1 at the upper surface of covering 2,6-2 ..., 6-k ..., 6-n, i.e. heater.Example shown in Fig. 4 a: phase-modulator 6-k can adopt the electrode 6a-k and the electrode 6b-k of two semicircular arcs, and electrode 6a-k and electrode 6b-k are positioned at the outside of miniature resonant ring 5-k.
Equally for double-deck waveguiding structure shown in Figure 1:
When the utility model adopted the electrooptic modulation mode, substrate 1 can be adopted block electrooptical material.
1) utilize mask plate and metal deposition or ion-exchange process to make bus signals waveguide passage 3 and single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n; 2) do the bottom of covering 2, promptly separator can adopt silica or silicon oxy-nitride material, also can be polymer; 3) be miniature resonant ring 5-1 by another mask plate and photoetching technique again at the separator upper surface, 5-2 ..., 5-k ..., 5-n; 4) top of covering covering 2, i.e. resilient coating; 5) be phase-modulator 6-1 at the upper surface of covering, 6-2 ..., 6-k ..., 6-n.The example of phase-modulator shown in Fig. 4 b is for adopting electrode 6c-k and electrode 6d-k, electrode 6c-k and electrode 6d-k be respectively voltage just/negative pole, electrode 6c-k and electrode 6d-k with just/the form input voltage of negative pole, its electrooptic modulation mainly acts on the straight wave guide bus signals waveguide passage 3.Bus signals waveguide passage 3 and single wavelength waveguide passage 4-k can manufacture by electro-optic polymer, and modulation at this moment can be the form shown in Fig. 4 b, also can be directly by electrode 6c-k and electrode 6d-k modulation.
Embodiment 2:
The utility model adopts the individual layer waveguiding structure shown in Fig. 2 a, comprises substrate 1, covering 2, bus signals waveguide passage 3 and single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n, miniature resonant ring 5-1,5-2 ..., 5-k ..., 5-n and ring-like phase-modulator 6-1,6-2, ..., 6-k ..., 6-n, k=1,2 ..., n.Fig. 5 a is the modulating electrode structure that has provided a kind of hot optical phase modulator of individual layer waveguiding structure, and Fig. 5 b is the modulating electrode structure that has provided the another kind of electro-optic phase modulator of individual layer waveguiding structure.
For individual layer waveguiding structure shown in Figure 2:
When the utility model adopts hot optical modulations, covering 2, bus signals waveguide passage 3, single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n, miniature resonant ring 5-1,5-2, ..., 5-k ..., the material of 5-n can be a polymer, also can be semiconductor.Technology of the present utility model is to do the bottom of covering 2 in substrate 1; Do waveguide core layer again and utilize mask plate and photoetching technique is made all waveguide channels and constituted bus signals waveguide passage 3 and single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n and miniature resonant ring 5-1,5-2 ..., 5-k ..., 5-n; Do the top of covering 2 again, the top of this covering 2 is also referred to as top covering; Be phase-modulator 6-1 at the upper surface of covering 2,6-2 ..., 6-k ..., 6-n, i.e. heater.The example of phase-modulator shown in Fig. 5 a: phase-modulator 6-k adopts the electrode 6a-k and the electrode 6b-k of two semicircular arcs, and electrode 6a-k and electrode 6b-k are positioned at the outside of waveguide miniature resonant ring 5-k.
Equally for individual layer waveguiding structure shown in Figure 2: when the utility model adopted the electrooptic modulation mode, substrate 1 can be adopted block electrooptical material, 1) utilize mask plate and metal deposition or ion-exchange process to make all waveguide channels to constitute bus signals waveguide passage 3, single wavelength waveguide passage 4-1,4-2, ..., 4-k ..., 4-n and miniature resonant ring 5-1,5-2 ..., 5-k, ..., 5-n; 2) do the bottom of covering 2, promptly resilient coating can be silica or silicon oxynitride, also can be polymer; 3) be phase-modulator 6-1 at the upper surface of covering 2,6-2 ..., 6-k ..., 6-n.
The example of phase-modulator: adopt electrode 6c-k and electrode 6d-k, electrode 6c-k and electrode 6d-k be respectively voltage just/negative pole.Electrode 6c-k and 6d-k with just/the form input voltage of negative pole, its electrooptic modulation mainly acts on miniature resonant ring 5-1,5-2 ..., 5-k ..., 5-n and bus signals waveguide passage 3 and single wavelength waveguide passage 4-1,4-2, ..., 4-k ..., between the 4-n.Bus signals waveguide passage 3 and single wavelength waveguide passage 4-1,4-2 ..., 4-k ..., 4-n can manufacture by electro-optic polymer, and modulation at this moment can be the form shown in Fig. 5 (b), also can directly pass through the upper/lower electrode vertical modulation.
Miniature resonant ring 5-1,5-2 ..., 5-k ..., the pre-value partially of the refractive index of 5-n employing ± 0.001-0.01, as ± 0.001, ± 0.005, ± 0.008, ± 0.01 etc.
Fig. 3 has only drawn and has prepared to apply the phase-modulator 6-k of the signal of telecommunication.When multiple wavelength optical signal 7 is input to the input of bus waveguide transmission channel 3, if there is not the signal of telecommunication to be applied on any phase-modulator 6-k, this light signal can be exported light signal 8 and obtain a multi-wavelength from the output output of bus waveguide transmission channel 3;
If when for example suitable signal of telecommunication phase-modulator 6-k of being applied to miniature resonant ring 5-k goes up, the waveguide index structure that is used for miniature resonant ring 5-k just can satisfy the condition of resonance of wavelength X-k, thereby the light signal that makes λ-k is coupled among single wavelength waveguide passage 4-k, and then, obtain to have the output light signal 9-k of wavelength X-k at last from the output of the output of single wavelength waveguide passage 4-k.
Claims (3)
1, Wave-guided selecting wave-length division multiplexing demultiplexing device spare, comprise substrate (1), covering (2), bus signals waveguide passage (3), several single wavelength waveguide passages (4-k), several miniature resonant rings (5-k) is characterized in that: also comprise several phase-modulators (6-k), total wavelength channel number of several single wavelength waveguide passages (4-k) is n, and several single wavelength waveguide passages (4-k) are respectively applied for n wavelength signals λ-k of transmission; Be used to select several miniature resonant rings (5-k) of n wavelength signals; Be used to change several phase-modulators (6-k) of several miniature resonant ring (5-k) refractive index structures; Contain bus signals waveguide passage (3) and several single wavelength waveguide passages (4-k) in the inside of covering (2), the lower surface of covering (2) is fixedlyed connected with the upper surface of substrate (1), the lower surface of several miniature resonant rings (5-k) and several phase-modulators (6-k) is fixedlyed connected with the upper surface of covering (2), bus signals waveguide passage (3) and the vertical placement mutually of several single wavelength waveguide passages (4-k), several miniature resonant rings (5-k) are positioned at the place, crosspoint of bus signals waveguide passage (3) and several single wavelength waveguide passages (4-k), are equipped with several miniature resonant rings (5-k) in several phase-modulators (6-k) inside.
2, the preparation method of Wave-guided selecting wave-length division multiplexing demultiplexing device spare according to claim 1 is characterized in that: described wavelength depends on radius, waveguide size and the refringence of miniature resonant ring (5-k).
3, the preparation method of Wave-guided selecting wave-length division multiplexing demultiplexing device spare according to claim 1 is characterized in that: the light refractive index difference of miniature resonant ring (5-k) and condition of resonance have pre-value partially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200520122867 CN2834033Y (en) | 2005-09-30 | 2005-09-30 | Wave guide optional wavelength wave division multiplexer/demultiplexer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200520122867 CN2834033Y (en) | 2005-09-30 | 2005-09-30 | Wave guide optional wavelength wave division multiplexer/demultiplexer |
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| CN2834033Y true CN2834033Y (en) | 2006-11-01 |
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| CN 200520122867 Expired - Fee Related CN2834033Y (en) | 2005-09-30 | 2005-09-30 | Wave guide optional wavelength wave division multiplexer/demultiplexer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103535050A (en) * | 2011-03-30 | 2014-01-22 | 瑞典爱立信有限公司 | Adaptive waveguide optical switching system and method |
| CN106850074A (en) * | 2012-07-12 | 2017-06-13 | 美光科技公司 | The method and apparatus of the Wave division multiplexing optical communication system with active carrier jumping frequency is provided |
-
2005
- 2005-09-30 CN CN 200520122867 patent/CN2834033Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103535050A (en) * | 2011-03-30 | 2014-01-22 | 瑞典爱立信有限公司 | Adaptive waveguide optical switching system and method |
| CN103535050B (en) * | 2011-03-30 | 2017-08-15 | 瑞典爱立信有限公司 | Adaptive waveguide optical switching system and method |
| CN106850074A (en) * | 2012-07-12 | 2017-06-13 | 美光科技公司 | The method and apparatus of the Wave division multiplexing optical communication system with active carrier jumping frequency is provided |
| CN106850074B (en) * | 2012-07-12 | 2020-10-27 | 美光科技公司 | Method and apparatus for providing wavelength division multiplexed optical communication system with active carrier hopping |
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