TWI440327B - Multiple Reconfigurable Optical Signal Plugging Multiplexer - Google Patents
Multiple Reconfigurable Optical Signal Plugging Multiplexer Download PDFInfo
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本發明係一種多重可重組態光信號塞取多工器,特別是指ㄧ種可以接受複數條路徑之全頻譜光信號的輸入並處理,同時可以擷取、增補特定波長頻率之光信號的多重可重組態光信號塞取多工器。The invention relates to a multi-reconfigurable optical signal plug-in multiplexer, in particular to an input and processing of a full-spectrum optical signal capable of accepting a plurality of paths, and at the same time, can extract and supplement optical signals of a specific wavelength frequency. Multiple reconfigurable optical signals are plugged into the multiplexer.
如第七圖所示,在光網路的傳遞中,習知具有N個光通道的光信號塞取多工器,係包含有一個1×N的解多工器(a)、N個2×2 的光切換器(b)以及一個N×1的多工器(c)。當N個波長的光訊號傳送至1×N的解多工器(a)的第一埠(a1)時,將經由1×N 的解多工器(a)作分波解多工,然後分波傳遞至N個光通道(d),且每個光波長信號之後會進入一個2×2的光切換器(b)來決定此光波長訊號是否要被擷取出。若任一光通道(d)上之光信號(例如波長λ1 的光信號) 經由2×2的光切換器(b)擷取出,則之後的波長λ1 就可以載送當地的訊號且加入至光網路中,而加入的訊號可以透過2×2的光切換器(b)來完成波長訊號進入該N×1的多工器(c)以耦合各波長。然而,若光波長λ1 訊號沒經由2x2光切換器(b)取出,則波長λ1 將直接傳送至Nx1多工器(c),然後由該N×1多工器(c) 耦合各波長,再由第二埠(c1)輸出。As shown in the seventh figure, in the transmission of the optical network, the optical signal plug-in multiplexer having N optical channels is conventionally included, and includes a 1×N demultiplexer (a) and N 2 ×2 optical switch (b) and an N × 1 multiplexer (c). When the optical signals of the N wavelengths are transmitted to the first chirp (a1) of the 1×N demultiplexer (a), the multiplexer (a) of the 1×N is demultiplexed and then multiplexed, and then The partial wave is transmitted to the N optical channels (d), and each optical wavelength signal is followed by a 2×2 optical switch (b) to determine whether the optical wavelength signal is to be extracted. If the optical signal on any of the optical channels (d) (for example, the optical signal of the wavelength λ 1 ) is extracted via the 2×2 optical switch (b), the subsequent wavelength λ 1 can carry the local signal and be added to the light. In the network, the added signal can pass through the 2×2 optical switch (b) to complete the wavelength signal into the N×1 multiplexer (c) to couple the wavelengths. However, if the optical wavelength λ 1 signal is not taken out via the 2x2 optical switch (b), the wavelength λ 1 will be directly transmitted to the Nx1 multiplexer (c), and then the wavelength will be coupled by the N×1 multiplexer (c). And then output by the second 埠 (c1).
然而,上述的光信號塞取多工器在實施上存有下列缺點:However, the optical signal plug-in multiplexer described above has the following disadvantages in implementation:
1.上述的光信號傳遞方法只能接受一個光信號來源端的輸入,資訊處理能力明顯不佳。1. The above optical signal transmission method can only accept the input of one optical signal source end, and the information processing capability is obviously poor.
2.經1×N解多工器之分波解多工後,每一光通道上所傳遞之光信號,透過光切換器的切換動作,該光信號將「通過」該光切換器或「切換」至取出埠(drop),而N條的光通道,僅能接受波長介於λ1 至λN 的來源光信號,如果來源光信號的波長涵蓋範圍更廣,例如欲處理波長涵蓋λ1 …λN 、λN+1 …λ2N 、λ2N+1 …λ3N 之來源光信號,就必須另匹配1x3N解多工器、3Nx1的多工器,與3N個光切換器,其硬體成本相對昂貴。2. After the multiplexing of the 1×N solution multiplexer, the optical signal transmitted on each optical channel passes through the switching action of the optical switch, and the optical signal will “pass” the optical switch or “ Switching to the drop, and the N optical channels can only accept source optical signals with wavelengths between λ 1 and λ N if the wavelength of the source optical signal covers a wider range, for example, the wavelength to be processed covers λ 1 ... λ N , λ N +1 ... λ 2N , λ 2N +1 ... λ 3N source optical signal must be matched with 1x3N demultiplexer, 3Nx1 multiplexer, and 3N optical switcher, its hardware The cost is relatively expensive.
3.欲同時處理多條光信號來源端的輸入時,必須對應配置多組如同上述之光信號塞取多工器,因此建置成本極高,不符經濟效益。3. When processing the input of the source of multiple optical signals at the same time, it is necessary to configure multiple groups of optical signals as described above to plug the multiplexer, so the construction cost is extremely high, which is not economical.
本發明主要係為解決傳統光信號塞取多工器的光信號處理方法無法同時處理複數條路徑所各自輸入之全頻譜光信號之問題。The invention mainly solves the problem that the optical signal processing method of the conventional optical signal plug-in multiplexer cannot simultaneously process the full-spectrum optical signals input by the plurality of paths.
本發明係一種多重可重組態光信號塞取多工器,包括:一第一光信號處理單元,包括有複數第一左埠、複數第一右埠;一第二光信號處理單元,包括有複數第二左埠、複數第二右埠;複數多重可變頻譜光通路,分別對應連接於該第一光信號處理單元之第一右埠與該第二光信號處理單元之第第二左埠;複數第一光信號輸入/輸出單元,每一第一光信號輸入/輸出單元係連結於該第一光信號處理單元之第一左埠;複數第二光信號輸入/輸出單元,每一第二光信號輸入/輸出單元係連結於該第二光信號處理單元之第二右埠;上述複數第一光信號輸入/輸出單元分別供接受一全頻譜光信號之輸入,然後傳輸至該第一光信號處理單元,經由該第一光信號處理單元之分波解多工與耦合多工,將該全頻譜光信號分配於每一多重可變頻譜光通路,使每一多重可變頻譜光通路均傳輸複數波長之光信號,且其中任ㄧ光信號的波長均與最鄰近該波長之光信號之間,彼此相間隔至少一波長,該複數波長之光信號經複數多重可變頻譜光通路傳遞至該第二光信號處理單元,經由該第二光信號處理單元之分波解多工與耦合多工,再分別由複數第二光信號輸入/輸出單元輸出;藉由將任一多重可變頻譜光通路預設或調變至一波長頻率,使該多重可變頻譜光通路上相同於該波長頻率之特定波長之光信號被反射,通過該第一光信號處理單元而在該第一光信號輸入/輸出單元而被擷取,其餘不同於該波長頻率之光信號則穿透該多重可變頻譜光通路,經過該第二光信號處理單元而在該第二光信號輸入/輸出單元被輸出。The present invention is a multiple reconfigurable optical signal plug multiplexer comprising: a first optical signal processing unit including a plurality of first left 埠, a plurality of first right 埠; and a second optical signal processing unit, including a plurality of second left 埠 and a plurality of second right 埠; a plurality of multiple variable spectrum optical paths respectively corresponding to the first right 连接 of the first optical signal processing unit and the second left 该 of the second optical signal processing unit复; a plurality of first optical signal input/output units, each first optical signal input/output unit being coupled to a first left 埠 of the first optical signal processing unit; and a plurality of second optical signal input/output units, each The second optical signal input/output unit is coupled to the second right 埠 of the second optical signal processing unit; the plurality of first optical signal input/output units are respectively configured to receive an input of a full spectrum optical signal, and then transmitted to the first An optical signal processing unit distributes the full-spectrum optical signal to each of the multiple variable-spectrum optical paths via the split-wave multiplexing and coupling multiplexing of the first optical signal processing unit to make each multi-variable Spectral light Each of the plurality of wavelengths transmits an optical signal of a plurality of wavelengths, and wherein any of the wavelengths of the optical signals are separated from the optical signals of the nearest wavelength by at least one wavelength, and the optical signals of the plurality of wavelengths are subjected to a plurality of multiple variable spectrum optical paths Passing to the second optical signal processing unit, performing demultiplexing and coupling multiplexing by the second optical signal processing unit, and then outputting by the plurality of second optical signal input/output units respectively; The variable-spectrum optical path is preset or modulated to a wavelength frequency such that an optical signal of the same wavelength of the wavelength of the multi-variable spectral optical path is reflected by the first optical signal processing unit An optical signal input/output unit is captured, and other optical signals different from the wavelength frequency penetrate the multiple variable spectrum optical path, and the second optical signal input/output is passed through the second optical signal processing unit. The unit is output.
上述被反射之光信號通過該第一光信號處理單元而在該第一光信號輸入/輸出單元被擷取,而該第二光信號輸入/輸出單元,係另增補輸入一具有相同波長頻率之光信號。The reflected optical signal is captured by the first optical signal input unit through the first optical signal processing unit, and the second optical signal input/output unit is supplemented with an input having the same wavelength. Optical signal.
上述第一光信號輸入/輸出單元係一三埠迴光器,該第二光信號輸入/輸出單元亦係一三埠迴光器或光耦合器。該第一光信號處理單元係一陣列波導光柵,該第二光信號處理單元亦係一陣列波導光柵。該多重可變頻譜光通路係一多重可調式布雷格光纖光柵。The first optical signal input/output unit is a three-turn photoreactor, and the second optical signal input/output unit is also a three-turn photoreactor or optical coupler. The first optical signal processing unit is an array of waveguide gratings, and the second optical signal processing unit is also an array of waveguide gratings. The multiple variable spectrum optical path is a multi-adjustable Bragg fiber grating.
本發明之優點在於:The advantages of the invention are:
1.本發明可以同時處理複數條路徑所各自輸入之全頻譜光信號,非常適合大量資訊之傳輸及處理。1. The invention can simultaneously process the full spectrum optical signals input by the plurality of paths, which is very suitable for transmission and processing of a large amount of information.
2.本發明在每一多重可變頻譜光通路可以分別傳遞複數波長之光信號,其傳遞及處理光信號的數量均遠勝於傳統光信號塞取多工器。2. The present invention can transmit optical signals of a plurality of wavelengths in each of the multiple variable spectrum optical paths, and the number of optical signals transmitted and processed is much better than that of the conventional optical signal multiplexer.
3.本發明在每一多重可變頻譜光通路上所傳遞之複數波長之光信號,其每一光信號的波長均與最鄰近該波長之光信號之間,彼此相間隔至少一波長單位,利用該相間隔的空缺波長區段,透過多重可變頻譜光通路在該「空缺波長區段」與「非空缺波長區段」之間改變頻譜,便能夠在該複數波長之光信號中任意擷取某特定波長之光信號供利用。3. The optical signal of a plurality of wavelengths transmitted by each of the multiple variable spectral optical paths of the present invention, wherein each optical signal has a wavelength that is at least one wavelength apart from the optical signal that is closest to the wavelength. By using the phase-spaced vacancy wavelength section and changing the frequency spectrum between the "vacancy wavelength section" and the "non-vacancy wavelength section" through the multiple variable spectrum optical path, any one of the complex wavelength optical signals can be used. A light signal of a specific wavelength is taken for utilization.
4.由於本發明具有同時處理複數條路徑所各自輸入之全頻譜光信號之能力,因此處理大量資訊之傳輸時,其硬體的建置成本極為低廉,經濟效益極高。4. Since the invention has the ability to simultaneously process the full spectrum optical signals input by the plurality of paths, the hardware construction cost is extremely low and the economic benefit is extremely high when processing a large amount of information transmission.
在本發明之實施例中,將述及一種陣列波導光柵(Array Waveguide Grating,簡稱AWG),為明示陣列波導光柵之工作原理,在說明本發明實施例之前,先對一種N×N陣列波導光柵之分波工作做一說明,其中N為左埠與右埠之個別數目。
如第五圖所示,N×N陣列波導光柵(9)具有N個左埠,分別為L1、L2、L3…LN,另具有N個右埠,分別為R1、R2、R3…RN,每一右埠R1、R2、R3…RN均連接一光纖(10)。如果每一左埠L1、L2、L3…LN均接受全頻光信號的輸入,則由左埠L1所輸入之全頻光信號In1將被N×N陣列波導光柵(9)分波解多工,而分別由右埠R1、R2、R3…RN輸出λ1
、λ2
、λ3
…λN
及λN+1
、λN+2
、λN+3
…λ2N
等波長的光信號至光纖(10),其中分配於右埠R1之光信號,其波長為λ1
、λN+1
,分配於右埠R2之光信號,其波長為λ2
、λN+2
,分配於右埠R3之光信號,其波長為λ3
、λN+3
,以此類推。同樣地,由左埠L2所輸入之全頻光信號In2將被N×N陣列波導光柵(9)執行分波解多工,而分別由右埠R1、R2、R3…RN輸出λ2
、λ3
、λ4
… λN+1
及λN+2
、λN+3
、λN+4
…λ2N+1
等波長的光信號。同理,由左埠L3所輸入之全頻光信號In3將被N×N陣列波導光柵(9)執行分波解多工,而分別由右埠R1、R2、R3…RN輸出λ3
、λ4
、λ5
…λN+2
及λN+3
、λN+4
、λN+5
…λ2N+2
等波長的光信號。此即N×N陣列波導光柵(9)之分波解多工原則。該N×N陣列波導光柵(9)的分波解多工原則,如第六圖之矩陣表所示,在該矩陣表中顯示,作為輸入的左埠1…N中的每一左埠如果均輸入λ1
…λN
的光信號,則經分波解多工後,作為輸出的右埠1…N中的每一右埠所分配之波長將如該矩陣表所示。
說明上述N×N陣列波導光柵(9)的分波解多工原則後,將續說明本發明,本發明係一種多重可重組態光信號塞取多工器,請參閱第一圖,其較佳實施例包含:
一個陣列波導光柵(1)、一個陣列波導光柵(2)、複數多重可調式布雷格光纖光柵(Tunable fiber Bragg grating)(3)、複數個迴光器(4)與複數個迴光器(4A)。其中陣列波導光柵(1)包括有複數個第一左埠,分別為L1、L3、L5…L(N-1)(第ㄧ圖中未示出第一埠L5),也包括有複數個第一右埠,分別為R1、R2、R3…RN,在本實施例中,第一左埠數目是第一右埠數目的1/2,例如第一左埠數目為8,第一右埠數目為16;而另一陣列波導光柵(2)包括有複數個第二左埠,分別為L1A、L2A、L3A…LNA,也包括有複數個第二右埠,分別為R1A、R3A、R5A…R(N-1)A(第ㄧ圖中未示出第二右埠R5A),在本實施例中,第二左埠數目是第二右埠數目的2倍,例如第二左埠數目為16,第二右埠數目為8。另外,複數條多重可調式布雷格光纖光柵(3)分別連接於陣列波導光柵(1)之每一個第一右埠R1、R2、R3…RN與另一陣列波導光柵(2)的每一個第二左埠L1A、L2A、L3A…LNA。而複數個(本實施例為8個)迴光器(4)連接於陣列波導光柵(1)的複數個第一左埠L1、L3…L(N-1),每一迴光器(4)均具有一A埠(41)、B埠(42)與C埠(43)。另外複數個(本實施例為8個)迴光器(4A)則分別連接另一陣列波導光柵(2)的複數個第二右埠R1A、R3A…RNA,該每一迴光器(4A)均具有一A埠(41A)、B埠(42A)與C埠(43A)。
在第一圖中,所有位於圖式左側的每一迴光器(4)的A埠(41)均可接受全頻譜光信號之輸入,其中In1的全頻譜光信號由連接於第一左埠L1的迴光器(4)的A埠(41)輸入、In3的全頻譜光信號由連接於第一左埠L3的迴光器(4)的A埠(41)輸入,In(N-1)的全頻譜光信號由連接於第一左埠L (N-1)的迴光器(4)的A埠(41)輸入。
請配合第ㄧ圖與第二圖,In1的全頻譜光信號由迴光器(4)的A埠(41)輸入,然後由該迴光器(4)的B埠(42)傳輸至陣列波導光柵(1)的第一左埠L1,經分波解多工後,該In1的全頻譜光信號將被分波如下:λ1
波長由第ㄧ右埠R1傳出至多重可調式布雷格光纖光柵(3)、λ2
波長由第ㄧ右埠R2傳出至多重可調式布雷格光纖光柵(3)、 λ3
波長由第ㄧ右埠R3傳出至多重可調式布雷格光纖光柵(3)…λN
波長由第ㄧ右埠RN傳出至多重可調式布雷格光纖光柵(3),然後λN+1
波長再由第ㄧ右埠R1傳出至多重可調式布雷格光纖光柵(3)、λN+2
波長由第ㄧ右埠R2傳出至多重可調式布雷格光纖光柵(3)、λN+3
波長由第ㄧ右埠R3傳出至多重可調式布雷格光纖光柵(3)…λ2N
波長由第ㄧ右埠RN傳出至多重可調式布雷格光纖光柵(3),如第二圖中之虛線方框所示,以此類推。
請配合第ㄧ圖與第三圖,In3的全頻譜光信號由迴光器(4)的A埠(41)輸入,然後由該迴光器(4)的B埠(42)傳輸至陣列波導光柵(1)的第一左埠L3,經分波後,該In3的全頻譜光信號將被分波如下: λ3
波長由第ㄧ右埠R1傳出至多重可調式布雷格光纖光柵(3)、λ4
波長由第ㄧ右埠R2傳出至多重可調式布雷格光纖光柵(3)、λ5
波長由第ㄧ右埠R3傳出至多重可調式布雷格光纖光柵(3)…λ2
波長由第ㄧ右埠RN傳出至多重可調式布雷格光纖光柵(3),然後λN+3
波長再由第ㄧ右埠R1傳出至多重可調式布雷格光纖光柵(3)、λN+4
波長由第ㄧ右埠R2傳出至多重可調式布雷格光纖光柵(3)、λN+5
波長由第ㄧ右埠R3傳出至多重可調式布雷格光纖光柵(3)…λN+2
波長由第ㄧ右埠RN傳出至多重可調式布雷格光纖光柵(3),如第二B圖中之虛線方框所示,以此類推。
請參閱第ㄧ圖,根據前述之分波原則,連接於第ㄧ右埠R1與第二左埠L1A之間的多重可調式布雷格光纖光柵(3),將傳遞含有波長λ1
、λ3
、λN-1
…λN+1
、λN+3
、λ2N-1
之光信號;連接於第ㄧ右埠R2與第二左埠L2A之間的多重可調式布雷格光纖光柵(3),將傳遞含有波長λ2
、λ4
、λN
…λN+2
、λN+4
、λ2N
之光信號;連接於第ㄧ右埠RN與第二左埠LNA之間的多重可調式布雷格光纖光柵(3),將傳遞含有波長λN
、λ2
、λN-2
…λ2N
、 λN+2
、λ2N-2
之光信號。上述之每一多重可調式布雷格光纖光柵(3)所傳遞之光信號,其每一光信號的波長均與最鄰近該波長之相鄰光信號之間,彼此相間隔至少一波長單位,例如λ1
與最鄰近的光信號λ3
之間,間隔著一個空缺波長λ2
。
所有經分波解多工後光信號透過每一條多重可調式布雷格光纖光柵(3)傳遞至另一陣列波導光柵(2)的第二左埠L1A、L2A、L3A…LNA,再經該陣列波導光柵(2)耦合多工與分波解多工,然後分別由第二右埠R1A、R3A…R(N-1)A傳經迴光器(4A)的B埠(42A),再由所有迴光器(4A)每一C埠(43A)分別輸出全頻譜的光信號。
在第一圖中,以連接於第ㄧ右埠R1與第二左埠L1A之間的多重可調式布雷格光纖光柵(3)為例,當多重可調式布雷格光纖光柵(3)之任一光柵(31)的波長被調整為符合上述空缺波長λ2
時(預設為λ2
或調變為λ2
均可),則所有波長有別於λ2
之光信號包括λ1
、λ3
及其他波長光信號將均穿透該光柵(31)而傳遞至第二左埠L1A,然後經分波解多工後分別由連接於第二右埠R1A、R3A…R(N-1)A之迴光器(4A)的B埠(42A)傳經迴光器(4A)的C埠(43A)輸出,該輸出之光信號在圖中被標示為Out1。上述調整光柵(31)之方式,可以採取改變對多重可調式布雷格光纖光柵(3)的張力或是改變溫度,均可達到調變光柵(31)波長頻率之目的。
以連接於第一右埠R1與第二左埠L1A之間的多重可調式布雷格光纖光柵(3)為例,當多重可調式布雷格光纖光柵(3)之其中一光柵(31)的波長被調整為符合波長 λ1
之頻譜時(預設為λ1
或調變為λ1
均可),則此時波長λ1
之光信號將被該光柵反射而折返,往圖式之左方行進,該波長λ1
之光信號將由第ㄧ右埠R1經第一左埠L1,然後由連接於第一左埠L1之迴光器(4)的B埠(42)輸入,再由該迴光器(4)的C埠(43)擷取出來,所擷取出來的光信號在第一圖中標示為Drop1,至於其餘波長之光信號,例如λ3、
λ5
…則將穿透該光柵(31)而傳遞至第二右埠L1A,經分波解多工後傳入所有連接於第二右埠R1A、R3A…R(N-1)A之迴光器(4A)的B埠(42A),再由所有迴光器(4A)的C埠(43A)輸出。
以連接於第ㄧ右埠R1與第二左埠L1A之間的多重可調式布雷格光纖光柵(3)為例,該多重可調式布雷格光纖光柵(3)之其中一光柵(31)的波長被調整為符合波長 λ1
之頻譜時,該光柵(31)之位置可以被定義為一反射點,原來向圖式右方行進之波長λ1
之光信號將在該反射點被反射而向左折返。此時,可由連接於第二左埠L1A之迴光器(4A)的A埠(41A)輸入一波長λ1
之增補光信號,該增補光信號在第一圖中標示為Add1,則該波長λ1
之增補光信號將經由迴光器(4A)的B埠(42A)傳經第二右埠R1A、第二左埠L1A,然後在多重可調式布雷格光纖光柵(3)上向左行進,最後由上述反射點折返而向右行進。如此,反射點雖有波長λ1
之光信號被折返向左,但藉由增補耦合一波長λ1
之光信號,可使反射點之後的向右方向,仍續傳輸包含該波長λ1
之光信號。
除了利用迴光器(4A) 輸入該增補光信號之外,本發明亦可利用其他方式加入該增補光信號,如第四圖所示。在第四圖中,該陣列波導光柵(1)、陣列波導光柵(2)、多重可調式布雷格光纖光柵(3)之配置與元件符號均與第一圖相同,故不再贅述,且第四圖中同樣有複數個迴光器(4)分別連接於陣列波導光柵(1)的複數個第一左埠L1、L3…L(N-1),但第四圖之實施例係另外以複數個光耦合器(4B)分別連接陣列波導光柵(2)的複數個第二右埠R1A、R3A…R(N-1)A。藉之,經陣列波導光柵(2)耦合多工與分波解多工之光信號將分別由第二右埠R1A、R3A…R(N-1)A傳經各光耦合器(4B),而增補之光信號Add1、Add3…Add(N-1)則透過該光耦合器(4B)執行耦合並輸出,該輸出之光信號在第四圖中分別被標示為Out1、Out3…Out(N-1)。
在上述實施例中,本發明以一個陣列波導光柵(1)作為前端元件,例如8×16的陣列波導光柵,其具有8個第一左埠與16個第ㄧ右埠,但其他諸如2×4陣列波導光柵、3×8陣列波導光柵、5×16陣列波導光柵等亦皆為本發明可利用之元件。而N×N形式的陣列波導光柵亦為本發明可利用之元件,例如16×16陣列波導光柵,其具有16個第一左埠與16個第ㄧ右埠,只要實施時僅序列為1、3、5、7、9、11、13、15的第一左埠接受全頻譜光信號之輸入,或例如序列為1、4、6、9、14的第一左埠接受全頻譜光信號之輸入,則亦能達成本發明之功效,亦即,該16×16陣列波導光柵並非所有的第一左埠均接受全頻譜光信號之輸入,而是每一個供輸入全頻譜光信號之第一左埠,其彼此之間至少間隔著ㄧ個第ㄧ左埠而排列,且序列為1與序列為16之第一左埠不同時接受全頻譜光信號之輸入。即使使用ㄧ32×28的陣列波導光柵作為前端元件,其具有32個第一左埠與28個第ㄧ右埠,亦為本發明可行的實施例,只要在32個第ㄧ左埠中,最多選擇14個第ㄧ左埠接受全頻譜光信號之輸入,藉由該32×28的陣列波導光柵將上述全頻譜光信號分配於每一多重可變頻譜光通路,使每一多重可變頻譜光通路均傳輸複數波長之光信號,且其中任ㄧ光信號的波長均與最鄰近該波長之光信號之間,彼此相間隔至少一波長。
上述位於光通路前端的陣列波導光柵(1)具有複數個第一左埠L1、L3…L(N-1),其使本發明可以具備「同時接受複數條路徑各自輸入之全頻譜光信號」之功效;而藉由陣列波導光柵(1)具有分波解多工與耦合多工之特性,亦使本發明具有「將該複數條路徑所輸入之全頻譜光信號分配於複數條光通路」之功效;此外,藉由適當設計陣列波導光柵(1)的第一左埠或者選擇適當的第ㄧ左埠來連接迴光器(4),則可以實現「任一光通路上,每一光信號的波長均與最鄰近該波長之光信號之間,彼此相間隔至少一波長單位」。但除了陣列波導光柵之外,凡其他得以實施上述要件之分波解多工與耦合多工之等效元件,皆可應用於本發明。此外,本發明以多重可調式布雷格光纖光柵(3)作為光信號傳遞通道與可變頻譜元件,在本發明中,該多重可變頻譜光通路可由其他可調變波長之光柵或等效元件替換之。
綜合上述說明,當可充分瞭解本發明之構造及功效,惟以上所述實施例僅係為本發明之較佳實施例,當不能以此限定本發明實施之範圍,即依本發明申請專利範圍及發明說明內容所作簡單的等效變化與修飾,皆屬本發明涵蓋之範圍。In an embodiment of the present invention, an Array Waveguide Grating (AWG) will be described as an operation principle of an explicit arrayed waveguide grating. Before describing an embodiment of the present invention, an N×N arrayed waveguide grating is described. The demodulation work is described as a description, where N is the individual number of left and right 。.
As shown in the fifth figure, the N×N arrayed waveguide grating (9) has N left chirps, respectively L1, L2, L3, ... LN, and has N right chirps, respectively R1, R2, R3, ... RN, each A right 埠R1, R2, R3...RN is connected to an optical fiber (10). If each of the left 埠 L1, L2, L3, ... LN receives the input of the full-frequency optical signal, the full-frequency optical signal In1 input by the left 埠 L1 will be demultiplexed by the N×N arrayed waveguide grating (9). And optical signals of wavelengths λ 1 , λ 2 , λ 3 ... λ N and λ N+1 , λ N+2 , λ N+3 ... λ 2N are output from the right 埠 R1, R2, R3, ... RN, respectively, to the optical fiber. (10), wherein the optical signal assigned to the right 埠R1 has a wavelength of λ 1 , λ N+1 , and an optical signal assigned to the right 埠 R2, the wavelength of which is λ 2 , λ N+2 , and is assigned to the right 埠 R3 The light signal has a wavelength of λ 3 , λ N+3 , and so on. Similarly, the full-frequency optical signal In2 input by the left-hand L2 will be subjected to the demultiplexing multiplex by the N×N arrayed waveguide grating (9), and the λ 2 and λ are output from the right 埠 R1, R2, R3, ... RN, respectively. 3 , λ 4 ... λ N+1 and λ N+2 , λ N+3 , λ N+4 ... λ 2N+1 optical signals of the same wavelength. Similarly, the full-frequency optical signal In3 input by the left-hand L3 will be subjected to the demultiplexing multiplexing by the N×N arrayed waveguide grating (9), and the λ 3 and λ are output from the right 埠 R1, R2, R3, ... RN, respectively. 4 , λ 5 ... λ N+2 and λ N+3 , λ N+4 , λ N+5 ... λ 2N + 2 wavelength optical signals. This is the principle of the demultiplexing of the N×N arrayed waveguide grating (9). The demultiplexing principle of the splitting solution of the N×N arrayed waveguide grating (9), as shown in the matrix table of the sixth figure, is shown in the matrix table as each input left 埠 1...N if When the optical signals of λ 1 ... λ N are input, the wavelengths assigned to each right 中 in the right 埠 1...N of the output will be as shown in the matrix after the multiplexed multiplex.
The invention will be described after explaining the principle of demultiplexing of the above-mentioned N×N arrayed waveguide grating (9). The present invention is a multiple reconfigurable optical signal plug-in multiplexer, please refer to the first figure, The preferred embodiment includes:
An arrayed waveguide grating (1), an arrayed waveguide grating (2), a complex multi-adjustable Bragg fiber grating (Tunable fiber Bragg grating) (3), a plurality of optical reflectors (4) and a plurality of optical reflectors (4A) ). The arrayed waveguide grating (1) includes a plurality of first left ridges, respectively L1, L3, L5, ... L(N-1) (the first 埠L5 is not shown in the figure), and includes a plurality of A right 埠, R1, R2, R3, ... RN, respectively, in this embodiment, the number of the first left 埠 is 1/2 of the number of the first right ,, for example, the number of the first left 为 is 8, the number of the first right 埠The other arrayed waveguide grating (2) includes a plurality of second left 埠, respectively L1A, L2A, L3A...LNA, and also includes a plurality of second right 埠, respectively R1A, R3A, R5A...R (N-1)A (the second right 埠R5A is not shown in the figure), in this embodiment, the number of the second left 埠 is twice the number of the second right ,, for example, the number of the second left 为 is 16 The number of second right 埠 is 8. In addition, a plurality of multi-adjustable Bragg fiber gratings (3) are respectively connected to each of the first right 埠R1, R2, R3... RN of the arrayed waveguide grating (1) and each of the other arrayed waveguide gratings (2) Two left 埠 L1A, L2A, L3A...LNA. And a plurality of (8 in this embodiment) photoreactors (4) are connected to the plurality of first left 埠 L1, L3, ... L(N-1) of the arrayed waveguide grating (1), and each of the illuminators (4) Both have an A (41), B (42) and C (43). In addition, a plurality of (8 in this embodiment) photoreactors (4A) are respectively connected to a plurality of second right-handed R1A, R3A...RNAs of another array of waveguide gratings (2), and each of the photoreactors (4A) Each has one A (41A), B (42A) and C (43A).
In the first figure, all A 埠 (41) of each of the illuminators (4) on the left side of the drawing can accept the input of the full spectrum optical signal, wherein the full spectrum optical signal of In1 is connected to the first left 埠The A埠(41) input of the light returner (4) of L1 and the full-spectrum optical signal of In3 are input by A埠(41) of the photoreactor (4) connected to the first left side L3, In(N-1) The full-spectrum optical signal is input by A埠(41) of the photoreactor (4) connected to the first left 埠L (N-1).
Please cooperate with the second and second figures. The full spectrum optical signal of In1 is input by A埠(41) of the photoreactor (4), and then transmitted to the array waveguide by B埠(42) of the photoreactor (4). After the first left 埠L1 of the grating (1), after the demultiplexing multiplex, the full spectrum optical signal of the In1 will be split as follows: λ 1 wavelength is transmitted from the right 埠R1 to the multi-adjustable Bragg fiber The grating (3), λ 2 wavelength is transmitted from the right 埠R2 to the multi-adjustable Bragg fiber grating (3), and the λ 3 wavelength is transmitted from the ㄧR right 3R3 to the multi-adjustable Bragg fiber grating (3) ... λ N wavelength is transmitted from the right 埠 RN to the multi-adjustable Bragg fiber grating (3), and then the λ N+1 wavelength is transmitted from the ㄧ right 埠 R1 to the multi-adjustable Bragg fiber grating (3) λ N+2 wavelength is transmitted from the right 埠R2 to the multi-adjustable Bragg fiber grating (3), λ N+3 wavelength is transmitted from the ㄧR right 3R3 to the multi-adjustable Bragg fiber grating (3) The λ 2N wavelength is transmitted from the second right RN to the multi-adjustable Bragg fiber grating (3), as indicated by the dashed box in the second figure, and so on.
Please cooperate with the third and third figures. The full spectrum optical signal of In3 is input by A埠(41) of the photoreactor (4), and then transmitted to the array waveguide by B埠(42) of the photoreactor (4). After the first left 埠L3 of the grating (1), after splitting, the full spectrum optical signal of the In3 will be split as follows: λ 3 wavelength is transmitted from the right 埠R1 to the multi-adjustable Bragg fiber grating (3) , λ 4 wavelength is transmitted from the right 埠 R2 to the multi-adjustable Bragg fiber grating (3), λ 5 wavelength is transmitted from the ㄧ right 埠 R3 to the multi-adjustable Bragg fiber grating (3)... λ 2 The wavelength is transmitted from the second right RN to the multi-adjustable Bragg fiber grating (3), and then the λ N+3 wavelength is transmitted from the second right 埠R1 to the multi-adjustable Bragg fiber grating (3), λ N The +4 wavelength is transmitted from the second right R2 to the multi-adjustable Bragg fiber grating (3), and the λ N+5 wavelength is transmitted from the second right R3 to the multi-adjustable Bragg fiber grating (3)...λ N The +2 wavelength is transmitted from the second right RN to the multi-adjustable Bragg fiber grating (3), as indicated by the dashed box in Figure B, and so on.
Referring to the second diagram, according to the foregoing splitting principle, the multi-adjustable Bragg fiber grating (3) connected between the right 埠R1 and the second left 埠L1A will transmit the wavelengths λ 1 , λ 3 , An optical signal of λ N-1 ... λ N+1 , λ N+3 , λ 2N-1 ; a multi-adjustable Bragg fiber grating (3) connected between the second right edge R2 and the second left side L2A, An optical signal containing wavelengths λ 2 , λ 4 , λ N ... λ N+2 , λ N+4 , λ 2N will be transmitted; a multi-adjustable Bragg connected between the second right RN and the second left 埠 LNA The fiber grating (3) transmits an optical signal containing wavelengths λ N , λ 2 , λ N-2 ... λ 2N , λ N+2 , λ 2N-2 . Each of the optical signals transmitted by each of the multi-adjustable Bragg fiber gratings (3) has a wavelength between each optical signal and an adjacent optical signal adjacent to the wavelength, at least one wavelength unit apart from each other. For example, between λ 1 and the nearest optical signal λ 3 is separated by a vacancy wavelength λ 2 .
All of the split-wave multiplexed optical signals are transmitted through each of the multiple adjustable Bragg fiber gratings (3) to the second left 埠L1A, L2A, L3A...LNA of the other arrayed waveguide grating (2), and then through the array The waveguide grating (2) is coupled to the multiplex and the partial wave multiplex, and then transmitted by the second right 埠R1A, R3A...R(N-1)A, respectively, through the B 埠 (42A) of the return lighter (4A), and then by all The return lighter (4A) outputs a full spectrum of optical signals for each C埠 (43A).
In the first figure, a multi-adjustable Bragg fiber grating (3) connected between the right 埠R1 and the second left 埠L1A is taken as an example, when any of the multiple adjustable Bragg fiber gratings (3) When the wavelength of the grating (31) is adjusted to conform to the above-mentioned vacancy wavelength λ 2 (preset to be λ 2 or λ 2 ), all optical signals having wavelengths different from λ 2 include λ 1 , λ 3 and The other wavelength optical signals will pass through the grating (31) and be transmitted to the second left 埠L1A, and then separated by the second right 埠R1A, R3A...R(N-1)A. The B 埠 (42A) of the return lighter (4A) is transmitted through the C 埠 (43A) output of the return lighter (4A), and the output optical signal is indicated as Out1 in the figure. The manner of adjusting the grating (31) can change the tension of the multi-adjustable Bragg fiber grating (3) or change the temperature, and can achieve the purpose of modulating the wavelength of the grating (31).
Taking the multi-adjustable Bragg fiber grating (3) connected between the first right 埠R1 and the second left 埠L1A as an example, when the wavelength of one of the gratings (31) of the multi-adjustable Bragg fiber grating (3) When it is adjusted to match the spectrum of the wavelength λ 1 (preset to λ 1 or to λ 1 ), then the optical signal of the wavelength λ 1 will be reflected by the grating and folded back to the left of the figure. The optical signal of the wavelength λ 1 will be input from the first right 埠 R1 to the first left 埠 L1, and then input by the B 埠 (42) connected to the return light (4) of the first left 埠 L1, and then the return light The C埠(43) of the device (4) is taken out, and the extracted optical signal is labeled as Drop1 in the first figure, and the optical signals of the remaining wavelengths, for example, λ 3, λ 5 ... will penetrate the grating. (31) is passed to the second right 埠 L1A, and after the multiplexed multiplex, the B 埠 ( ( A 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 埠 埠 埠 埠 埠 埠 埠 埠 埠 埠 埠 埠 埠 埠42A), then output by C埠 (43A) of all the returnors (4A).
Taking the multi-adjustable Bragg fiber grating (3) connected between the right 埠R1 and the second left 埠L1A as an example, the wavelength of one of the gratings (31) of the multi-adjustable Bragg fiber grating (3) When adjusted to the spectrum of the wavelength λ 1 , the position of the grating (31) can be defined as a reflection point, and the optical signal of the wavelength λ 1 originally traveling to the right of the figure will be reflected at the reflection point and folded to the left. return. At this time, a supplemental optical signal of a wavelength λ 1 may be input from A 埠 (41A) connected to the photoreactor (4A) of the second left 埠 L1A, and the supplemental optical signal is labeled as Add1 in the first figure, then the wavelength The supplemental optical signal of λ 1 will pass through the second right 埠R1A, the second left 埠L1A via B 埠 (42A) of the return lighter (4A), and then travel left on the multi-adjustable Bragg fiber grating (3), Finally, it is folded back by the above reflection point and travels to the right. Thus, although the reflection point of the optical signal wavelength λ is folded to the left, but coupled by a patch of light wavelength λ 1 signal, can rightward direction after reflection point, comprising a still continued transmission of light of the wavelength λ 1 signal.
In addition to inputting the supplemental optical signal using the photoreactor (4A), the present invention may also incorporate the supplemental optical signal by other means, as shown in the fourth figure. In the fourth figure, the arrangement and component symbols of the arrayed waveguide grating (1), the arrayed waveguide grating (2), and the multi-adjustable Bragg fiber grating (3) are the same as those of the first figure, and therefore will not be described again, and In the four figures, a plurality of photoreactors (4) are respectively connected to the plurality of first left 埠 L1, L3, ... L(N-1) of the arrayed waveguide grating (1), but the embodiment of the fourth figure is additionally A plurality of optical couplers (4B) are respectively connected to a plurality of second right 埠R1A, R3A...R(N-1)A of the arrayed waveguide grating (2). By the way, the optical signals coupled to the multiplexed and demultiplexed multiplexed optical fibers by the arrayed waveguide grating (2) are respectively transmitted by the second right 埠R1A, R3A...R(N-1)A through the optical couplers (4B), and The supplemental optical signals Add1, Add3...Add(N-1) are coupled and output through the optical coupler (4B), and the output optical signals are labeled as Out1, Out3...Out(N- in the fourth figure, respectively. 1).
In the above embodiment, the present invention has an arrayed waveguide grating (1) as a front end element, such as an 8 x 16 arrayed waveguide grating having 8 first left turns and 16 second right turns, but others such as 2 x. 4 arrayed waveguide gratings, 3 x 8 arrayed waveguide gratings, 5 x 16 arrayed waveguide gratings, etc. are also available components of the present invention. The arrayed waveguide grating of the N×N form is also an element usable in the present invention, for example, a 16×16 arrayed waveguide grating having 16 first left 埠 and 16 ㄧ right 埠, as long as the sequence is only 1. The first left 3 of 3, 5, 7, 9, 11, 13, 15 accepts the input of the full spectrum optical signal, or for example the first left 序列 of the sequence 1, 4, 6, 9, 14 receives the full spectrum optical signal Input, the effect of the invention can also be achieved, that is, not all of the first left-handers of the 16×16 arrayed waveguide grating receive the input of the full-spectrum optical signal, but the first one for inputting the full-spectrum optical signal. Left 埠, which are arranged at least between each other with a left 埠 left 埠, and the sequence 1 is different from the first left 序列 of sequence 16 and accepts the input of the full spectrum optical signal. Even if a ㄧ32×28 arrayed waveguide grating is used as the front end element, which has 32 first left 埠 and 28 ㄧ right 埠, it is also a feasible embodiment of the present invention, as long as the 32 ㄧ left , Selecting 14 third-order left-hands to receive the input of the full-spectrum optical signal, and distributing the full-spectrum optical signal to each of the multiple variable-spectrum optical paths by the 32×28 arrayed waveguide grating, so that each multi-variable The spectral light path transmits optical signals of a plurality of wavelengths, and any of the wavelengths of the optical signals are separated from the optical signals closest to the wavelength by at least one wavelength.
The arrayed waveguide grating (1) located at the front end of the optical path has a plurality of first left 埠 L1, L3, ..., L(N-1), which enable the present invention to have "full spectrum optical signals input from a plurality of paths simultaneously" The function of the arrayed waveguide grating (1) has the characteristics of splitting multiplex and coupling multiplexing, and the invention has the function of "allocating the full spectrum optical signal input by the plurality of paths to the plurality of optical paths" In addition, by appropriately designing the first left 埠 of the arrayed waveguide grating (1) or selecting the appropriate third ㄧ 埠 to connect the illuminator (4), it is possible to achieve "any light path, each optical signal The wavelengths are each spaced apart from the optical signal closest to the wavelength by at least one wavelength unit. However, in addition to the arrayed waveguide grating, other equivalent components of the demultiplexing and coupling multiplexing that implement the above requirements can be applied to the present invention. In addition, the present invention uses a multi-adjustable Bragg fiber grating (3) as an optical signal transmission channel and a variable spectrum element. In the present invention, the multiple variable spectrum optical path can be used by other tunable wavelength gratings or equivalent components. Replace it.
In view of the foregoing description, the structure and function of the present invention can be fully understood, but the above described embodiments are merely preferred embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the scope of patent application according to the present invention. And the simple equivalent changes and modifications made by the description of the invention are within the scope of the invention.
(1)...陣列波導光柵(1). . . Arrayed waveguide grating
(2)...陣列波導光柵(2). . . Arrayed waveguide grating
(3)...多重可調式布雷格光纖光柵(3). . . Multiple adjustable Bragg fiber grating
(31)...光柵(31). . . Grating
(4)(4A)...迴光器(4) (4A). . . Back light
(4B)...光耦合器(4B). . . Optocoupler
(41)(41A)...A埠(41) (41A). . . A埠
(42)(42A)...B埠(42) (42A). . . B埠
(43)(43A)...C埠(43) (43A). . . C埠
(9)...N×N陣列波導光柵(9). . . N×N arrayed waveguide grating
(10)...光纖(10). . . optical fiber
(a)...1×N解多工器(a). . . 1×N solution multiplexer
(b)...2×2光切換器(b). . . 2×2 optical switcher
(c)...N×1多工器(c). . . N×1 multiplexer
第一圖係係為本發明之構造示意圖。The first figure is a schematic view of the structure of the present invention.
第二圖係為本發明之構造示意圖,主要用以說明第一左埠L1輸入全頻譜光信號後的分波情形。The second figure is a schematic diagram of the structure of the present invention, and is mainly used to illustrate the demultiplexing situation after the first left 埠L1 inputs the full spectrum optical signal.
第三圖係為本發明之構造示意圖,主要用以說明第一埠左L3輸入全頻譜光信號後的分波情形。The third figure is a schematic diagram of the structure of the present invention, and is mainly used to illustrate the demultiplexing situation after the first left L3 input full spectrum optical signal.
第四圖係為本發明之之構造示意,主要用以說明光耦合器之配置情形。The fourth figure is a schematic diagram of the structure of the present invention, and is mainly used to explain the configuration of the optical coupler.
第五圖係為一N×N陣列波導光柵(AWG)之分波示意圖。The fifth figure is a schematic diagram of the splitting of an N×N arrayed waveguide grating (AWG).
第六圖係為一N×N陣列波導光柵之分波原則矩陣表。The sixth figure is a matrix of the principle of the splitting principle of an N×N arrayed waveguide grating.
第七圖係為習知具有N 個光通道的光信號塞取多工器架構圖。The seventh figure is a conventional optical signal plug-in multiplexer architecture diagram with N optical channels.
(1)...陣列波導光柵(1). . . Arrayed waveguide grating
(2)...陣列波導光柵(2). . . Arrayed waveguide grating
(3)...多重可調式布雷格光纖光柵(3). . . Multiple adjustable Bragg fiber grating
(31)...光柵(31). . . Grating
(4)(4A)...迴光器(4) (4A). . . Back light
(41)(41A)...A埠(41) (41A). . . A埠
(42)(42A)...B埠(42) (42A). . . B埠
(43)(43A)...C埠(43) (43A). . . C埠
Claims (6)
一第一光信號處理單元,包括有複數第一左埠、複數第一右埠;
一第二光信號處理單元,包括有複數第二左埠、複數第二右埠;
複數多重可變頻譜光通路,分別對應連接於該第一光信號處理單元之第一右埠與該第二光信號處理單元之第二左埠;
複數第一光信號輸入/輸出單元,每一第一光信號輸入/輸出單元係連結於該第一光信號處理單元之第一左埠;
複數第二光信號輸入/輸出單元,每一第二光信號輸入/輸出單元係連結於該第二光信號處理單元之第二右埠;
上述複數第一光信號輸入/輸出單元分別供接受一全頻譜光信號之輸入,然後傳輸至該第一光信號處理單元,經由該第一光信號處理單元之分波解多工與耦合多工,將該全頻譜光信號分配於每一多重可變頻譜光通路,使每一多重可變頻譜光通路均傳輸複數波長之光信號,且其中任ㄧ光信號的波長均與最鄰近該波長之光信號之間,彼此相間隔至少一波長,該複數波長之光信號經複數多重可變頻譜光通路傳遞至該第二光信號處理單元,經由該第二光信號處理單元之分波解多工與耦合多工,再分別由複數第二光信號輸入/輸出單元輸出;藉由將任一多重可變頻譜光通路預設或調變至一波長頻率,使該多重可變頻譜光通路上相同於該波長頻率之特定波長之光信號被反射,通過該第一光信號處理單元而在該第一光信號輸入/輸出單元而被擷取,其餘不同於該波長頻率之光信號則穿透該多重可變頻譜光通路,經過該第二光信號處理單元而在該第二光信號輸入/輸出單元被輸出。A multiple reconfigurable optical signal plug-in multiplexer comprising:
a first optical signal processing unit includes a plurality of first left 埠 and a plurality of first right 埠;
a second optical signal processing unit includes a plurality of second left 埠 and a plurality of second right 埠;
a plurality of multiple variable spectrum optical paths respectively corresponding to a first right 连接 of the first optical signal processing unit and a second left 埠 of the second optical signal processing unit;
a plurality of first optical signal input/output units, each first optical signal input/output unit being coupled to a first left side of the first optical signal processing unit;
a plurality of second optical signal input/output units, each second optical signal input/output unit being coupled to a second right 埠 of the second optical signal processing unit;
The plurality of first optical signal input/output units are respectively configured to receive an input of a full-spectrum optical signal, and then transmitted to the first optical signal processing unit, and the demultiplexing and coupling multiplexing by the first optical signal processing unit And distributing the full-spectrum optical signal to each of the multiple variable-spectrum optical paths, so that each of the multiple variable-spectrum optical paths transmits the optical signals of the plurality of wavelengths, and wherein any of the wavelengths of the optical signals are closest to the optical signal The optical signals of the wavelengths are separated from each other by at least one wavelength, and the optical signals of the plurality of wavelengths are transmitted to the second optical signal processing unit via the plurality of multiple variable spectrum optical paths, and the partial wave solution of the second optical signal processing unit is Multiplexed and coupled multiplexed, respectively, output by a plurality of second optical signal input/output units; the multiple variable spectral light is made by presetting or modulating any of the multiple variable spectral optical paths to a wavelength frequency An optical signal having a specific wavelength at the same wavelength as the wavelength is reflected, is drawn by the first optical signal processing unit at the first optical signal input/output unit, and the rest is different from the wavelength Rate of penetration of the optical signal of the multi-variable spectral light path through which the second optical signal processing unit and the second optical signal input / output unit is outputted.
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