535015535015
經濟部智慧財產局員工消費合作社印製 本發明主要係關於一種光纖光柵濾波器，尤指一種利 用特殊設計的複合平板結構物，來達到調變等週期光纖光 柵為各·式不等週期之光纖光栅，以滿足不同波長濾波器需 求之目的者。 現有光纖光柵濾波器運用範圍包括有可調整的散射補 償斋、光平坦放大器、光信號塞取器、波長可選濾波器等 兀件，其主要係應用高密度分波多工器（D w D M)的技 術八中咼牷度勿波多工主要係在一條光纖上同時以數十 道以上不同波長的光來傳輸訊息，藉以提昇資訊傳輸的傳 輸量，現有的分波多工元件，計有薄膜式濾波器、Fabry_ Perot etalon濾波器、聲光濾波器、波導式的仏^· Zehnder濾波器、布拉袼反射濾波器等，其中以薄膜式濾 波裔為此類產品之主流，但其製作成本甚高並且頻道增加 時’串音干擾也容易產生。 因此，本發明人有鑑於現有多工濾波器生產成本高及 使用上的缺失，特經過不斷的研究與試驗，終於發展出一 種能提昇現有多工濾波器使用效能與具較低製作成本之發 明。 本發明之主要目的，在於提供一種光纖光栅濾波器， 其主要係包含有一呈特定形狀的複合平板結構物及一貼設 於複合平板結構物之等週期光纖光柵，其中複合平板結構 物係由兩個呈不同幾何形狀與熱膨脹係數之材料組成的基 板及溫度補償基板所組成，其中基層的形狀係先由光纖光 柵所要使用的特定頻譜分佈進行頻谱-應變逆運算，得到Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economics The present invention is mainly related to a fiber grating filter, especially a composite flat structure using a specially designed structure to achieve modulation and other periodic fiber gratings. Gratings to meet the needs of different wavelength filters. The application scope of the existing fiber grating filters includes adjustable scattering compensation modules, optical flattening amplifiers, optical signal pickers, and wavelength-selectable filters. Its main applications are high-density multiplexers (D w DM). The technology of the 8th grade of Dowwave multiplexing is mainly to transmit information on a single fiber with dozens of channels of light with different wavelengths at the same time, in order to increase the transmission of information transmission. The existing demultiplexing multiplexing elements include thin film filtering. Filters, Fabry_Perot etalon filters, acousto-optic filters, waveguide-type 仏 ^ · Zehnder filters, Bragg reflection filters, etc. Among them, thin-film filter is the mainstream of such products, but its production cost is very high And when the channel is increased, 'crosstalk interference is also easy to occur. Therefore, in view of the high production cost and lack of use of the existing multiplex filter, the inventor finally developed an invention that can improve the use efficiency of the existing multiplex filter and has a lower production cost after continuous research and experiment. . The main object of the present invention is to provide a fiber grating filter, which mainly includes a composite flat structure with a specific shape and an equal period fiber grating attached to the composite flat structure. The composite flat structure is composed of two A substrate and a temperature-compensated substrate made of materials with different geometries and thermal expansion coefficients. The shape of the base layer is first calculated from the specific spectrum distribution to be used by the fiber grating to perform the inverse spectrum-strain calculation.
------------Μ — (請先閱讀背面之注意事項再填寫本頁) 訂· ;線_ 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 χ 297公釐） 535015 AV Β7 經濟部智慧財產局員工消費合作社印製 五、發明說明（ 所品的光纖光柵之應變分佈，以此為基板中心線所需之應 變分佈，再經過一次應變-形狀逆運算，用以決定欲產生 此應變分佈的平板形狀，藉此粘貼於基板中心線上之光纖 光柵會因基板應變之故而產生變形，進而獲得特定之頻譜 分佈’·而溫度補償基板係用以溫度補償，而於溫度上升或 降低時，透過溫度補償基板形狀及膨脤的效果與基板不同 的作用，造成朝左右兩方向擴展之張力不同，致使黏貼光 纖之上層板產生彎曲以致光纖光栅受到拉伸或壓縮，故可 進行對光纖光柵作溫度補償，以解決光纖光柵在溫度影響 下其反射光中心波長產生偏移的現象者。 為使貴審查委員能進一步瞭解本發明之技術手段、 Φτ彳玫及其他目的，茲附以圖式詳細說明如后： (•一）·圖式部份： 第一圖··係本發明之平面示意圖。 第二圖：係本發明之立體分解圖。 第三圖：係本發明基板與預定應變之應變比較圖。 第四圖：係欲產生第三圖之應變時，本發明經由逆運算所 得之基板結構形狀平面圖。 第五圖：係本發明溫度補償裝置之作用效果比較圖。 (二）元件標號部份： (· 1 0 )光纖光柵 （1 2 )基板 (1 4 )溫度補償基板 #本發明主要係提供一種光纖光柵遽波器，請配合參看 弟-、二圖’由圖中可看出本發明之光纖光柵濾波器主要 1^------------Μ--------^---------^ (請先閱讀背面之漆意事頊存填寫本 本紙張尺國國家標準^297公釐） 535015 經濟部智慧財產局員工消費合作社印製 ΚΙ ---—____Β7____ 五、發明說明（3) 係包3有一複合平板結構物及一光纖光柵（丄〇 )，其中 複口平板結構物係由一基板（丄2)及一溫度補償基板 (1 4 )所組成，而基板（1 2 )及溫度補償基板（1 4 )係相互呈不同的幾何形狀外型，且係由不同之熱膨脹 係數材料所構成，並且基板（1 2 )與溫度補償基板（1 4 )係呈不等截面積之狀態形態。 又光纖光栅（1 〇 )係用以限制以及傳輸一入射光， 來達到渡波之作用，該光纖光柵（1 0 )係牢貼於複合平 板結構物上，一般而言，光纖光栅（1 0 )係粘貼於基板 (1 2)上，5玄光纖光拇（1 〇)具有一中心波長，其可 將一入射光中具有該中心波長之光訊號反射，而此中心波 長可、纟二由其所在之板體幾何形狀及外力調變至所預定之頻 譜，在實施上，所用的光纖光柵（丄〇 )可為一布拉格光 纖光栅（Bragg gratings)。 在實施上，先將一具特定形狀的基板（1 2 )施予一 疋外力使基板（1 2 )於在其本身彈性範圍内於預定光 、截光柵（1 〇 )黏貼處產生壓縮或拉伸，再將一具等週期 之光纖光柵（1 〇)牢固地貼置於基板（丄2)上，然後 釋放所施加之外力，使光纖光栅（1 0 )隨著基板（1 2 )回復原形時跟著變形，藉此改變其光纖光柵（丄〇 ) 之週期分佈，進而獲得設計之頻譜，另將一溫度補償基板 (1 4 )貼置異於光纖光柵（丄〇 )另一邊之基板（丄 2 )上’使完成整個的光纖光栅濾波器。 明芩看第二、四圖，基板（丄2 )的形狀係先依光纖 I ^ ---1----^--I------^ (請先閱讀背面之注意事項再填寫本頁)------------ Μ — (Please read the notes on the back before filling out this page) Order ·; _ This paper size applies to China National Standard (CNS) A4 (21〇χ 297) 5%) 535015 AV Β7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (The strain distribution of the fiber gratings of the product is used as the strain distribution required by the centerline of the substrate. It is used to determine the shape of the flat plate to generate this strain distribution, so that the fiber grating attached to the center line of the substrate will be deformed due to the substrate strain, and then obtain a specific spectral distribution '. The temperature compensation substrate is used for temperature compensation, and When the temperature rises or falls, the effect of compensating the shape and expansion of the substrate through temperature is different from that of the substrate, which causes the tension to expand in the left and right directions to be different. It can perform temperature compensation on the fiber grating to solve the phenomenon that the center wavelength of the reflected light of the fiber grating is shifted under the influence of temperature. The investigating committee can further understand the technical means, Φτ 彳, and other purposes of the present invention, and attach detailed illustrations as follows: (• 一) · Schematic part: The first diagram ·· is a schematic plan view of the present invention. The second figure is an exploded perspective view of the present invention. The third figure is a strain comparison chart of the substrate of the present invention and a predetermined strain. The fourth figure is the substrate obtained by the inverse operation of the present invention when the strain of the third figure is to be generated. The plan view of the structure and shape. Fifth figure: It is a comparison of the effect of the temperature compensation device of the present invention. (II) Component labeling part: (· 1 0) Fiber Bragg Grating (1 2) Substrate (1 4) Temperature Compensation Substrate # This invention It mainly provides a fiber grating chirper. Please refer to Figure 2 and Figure 2 for details. According to the figure, the fiber grating filter of the present invention is mainly 1 ^ ------------ M-- ------ ^ --------- ^ (Please read the lacquer on the back first and fill in the national standard of this paper rule ^ 297mm) 535015 Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs Making ΚΙ ---—____ Β7 ____ 5. Description of the invention (3) The package 3 has a composite flat structure and a light Fiber grating (丄 〇), where the complex flat plate structure is composed of a substrate (丄 2) and a temperature compensation substrate (1 4), and the substrate (1 2) and the temperature compensation substrate (1 4) are mutually Different geometries and shapes are made of different thermal expansion coefficient materials, and the substrate (1 2) and the temperature-compensated substrate (1 4) are in the state of different cross-sectional areas. The fiber grating (1 〇) system It is used to limit and transmit an incident light to achieve the effect of crossing waves. The fiber grating (1 0) is firmly attached to the composite flat structure. Generally, the fiber grating (1 0) is adhered to the substrate (1 2). On the other hand, the optical fiber (5) of the optical fiber has a center wavelength, which can reflect an optical signal having the center wavelength in an incident light, and the center wavelength can be determined by the geometry and external force of the board where it is located. It is adjusted to a predetermined frequency spectrum. In practice, the fiber grating (丄 〇) used may be a Bragg gratings. In practice, a substrate (1 2) with a specific shape is first applied with an external force to cause the substrate (1 2) to compress or stretch within the elastic range of the substrate at a predetermined light and truncated grating (1 0). Then, an equal period fiber grating (10) is firmly attached to the substrate (丄 2), and then the external force is released to make the fiber grating (1 0) return to the original shape with the substrate (1 2). Following the deformation, the periodic distribution of its fiber grating (丄 〇) is changed to obtain the designed frequency spectrum. In addition, a temperature compensation substrate (1 4) is placed on a substrate (丄 2) different from the other side of the fiber grating (丄 〇). ) On 'Make the entire fiber grating filter complete. Looking at the second and fourth pictures, the shape of the substrate (丄 2) is based on the optical fiber I ^ --- 1 ---- ^-I ------ ^ (please read the precautions on the back first) (Fill in this page)
535015 五 發明說明（午） A7 B7 經 濟 部 智 慧 財 產 局 員 工 消 費 合 社 印 製 、軍H所要使用的特定頻譜分佈進行頻譜應變逆 J中：線::的光纖光柵之應變分佈，以此為基板（1 、、泉斤而之應變分佈，再經過一次應 算，便可得到欲產生此應變 狀逆運 、中基板（12)形狀之運算方式可利 最佳化等方式來逸杆·笛-m 儀次肜狀 ⑼ ，弟二圖為當光纖光柵之應變為線性 广基板經由逆運算所得之基板外型，第四圖為所需要 光纖光栅之應變分佈與基板中心線之應變分佈之比較j 此圖可知二者差異極小，亦即經由逆運算所得之基板外型 其中心線可產生所需的光纖光柵之應變分佈。 又作為溫度補償之溫度補償基板（工4)係經由應變 與溫度效應逆運算計算所得到之特殊平板結構物形狀，且 由於基板（1 2 )為非等截面積’故其與基板（工2 )形 狀：不-致。藉此’當溫度上升或降低時，因本發明溫度 補{«基板（1 4 )之形狀及膨脹的效果皆與基板（丄2 ) 不同’造成朝左右兩方向擴展之張力不同，'致使黏貼光纖 光栅d 0)之基板（1 2)產生.彎曲以致光纖光柵（1 0 )受到拉伸或壓縮’故可進行對光纖光拇（工〇 )做溫 度補償，以解決光纖光栅（i 〇 )在溫度變化影響下其反 射光中心波長產生偏移的現象，請參看如第五圖所示者， 由圖中可看到，本發明透過溫度補償基板（丨4)之補償 作用’可讓基板（1 2 )在溫度變化達攝氏100度的情況 下’基板於光纖光栅黏貼處之應變只有微小的改變（圖中 具有曼形的曲線），相對地若無溫度補償基板，則應變的 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）535015 Description of the five inventions (noon) A7 B7 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumers ’Cooperative, and the specific spectral distribution to be used by the military H to perform the spectral strain inversion J Middle: Line :: The strain distribution of the fiber grating, as the substrate (1, the strain distribution of springs and strains, and after one more calculation, you can get the desired shape of the strain, the calculation method of the shape of the base plate (12) can be optimized, and other methods The second figure is the shape of the substrate obtained by inverse calculation when the strain of the fiber grating is linear and wide. The fourth figure is the comparison of the strain distribution of the required fiber grating and the strain distribution of the centerline of the substrate. This figure shows that the difference between the two is extremely small, that is, the centerline of the substrate shape obtained through the inverse operation can produce the required strain distribution of the fiber grating. The temperature compensation substrate (Work 4), which is also used for temperature compensation, is through strain and temperature effects. The shape of the special flat structure obtained by inverse calculation, and because the substrate (1 2) is of an unequal cross-sectional area, its shape is the same as that of the substrate (工 2): it is not the same. This is used as the temperature When the temperature rises or decreases, the shape and expansion effect of the temperature compensation {«substrate (1 4) and the substrate (丄 2) are different from the substrate (丄 2) 'cause the tension to expand in the left and right directions is different, which causes the fiber grating d 0) The substrate (1 2) is produced. The fiber grating (1 0) is bent or compressed, so temperature compensation of the fiber optic thumb (work 0) can be performed to solve the effect of the fiber grating (i 0) on temperature changes. The phenomenon that the center wavelength of the reflected light is shifted is shown in the fifth figure. It can be seen from the figure that the compensation effect of the present invention through the temperature compensation substrate (丨 4) allows the substrate (1 2) to In the case of a temperature change of 100 degrees Celsius, the substrate's strain at the FBG adhesion point has only a slight change (the curve in the figure has a mann-shaped curve). On the other hand, if there is no temperature-compensated substrate, the paper size of the strain applies to Chinese national standards. (CNS) A4 size (210 X 297 mm)
五 發明說明（ί 改變：非常可觀(圖中具有三角形的曲線)。 本表月的光纖光栅濾波器具有下列各項優點： 1:可讓等週期之光纖光栅（i〇)調變為各式不等 ::之先纖光柵（10)，以滿足不同波長濾波器需求之 光纖心了？不同形狀的基板（12)設置在相同週期之 : 〇)上，而讓相同的光纖光柵（1 0 )能產 生不同的週期分佈’進而達到所需求的頻譜，與利用不同 的相位光罩來製造不同週期分佈的光纖光栅相比較， 省大量製作成本。 3 ·由於特定形狀之溫度補償基板（1 4)的應用， 可=於非等截面積基板（1 2)進行溫度補償，其運用將 比習用之等截面積雙基板溫度補償範圍更廣且穩定性優 經 濟 部 智 慧 財 產 局 員 工 消 費 合 作 社 印 製 4針對不同需求之濾波效果，可用形狀最佳化方、去 來設計特定之基板（i 2)外型，針對不同截面變化之平 板，同樣可用形狀最佳化方法來設計溫度補償基板（工 4 )之幾何外型，設計流程創新及一貫化。 5 .全光纖式設計，與薄膜式濾波器相較無插入損失 之困擾。 6 ·具溫度補償功能，中心波長穩定性優良。 7·利用膨脹係數不同的材質來作被動式的溫度補償 控制，並可經由溫度補償基板（1 4 )的特定形狀來達= 補償控制的目標。 7 本紙張尺度適用中國國家標準（CNS)A4規格(210 x 297公爱)'~' ~--—~ _____ 535015 A7Fifth invention description (ί Change: very impressive (the triangle curve in the picture). The fiber grating filter of this watch has the following advantages: 1: The equal period fiber grating (i0) can be adjusted to various types Range :: The first fiber grating (10) to meet the fiber core requirements of different wavelength filters? Different shaped substrates (12) are set on the same period: 〇), and the same fiber grating (1 0 ) Can generate different periodic distributions' and then achieve the required frequency spectrum. Compared with the use of different phase masks to manufacture fiber gratings with different periodic distributions, it saves a lot of production costs. 3 · Due to the application of the temperature-compensated substrate (1 4) of a specific shape, temperature compensation can be performed on a substrate of non-equal cross-sectional area (1 2). Its application will be wider and more stable than the conventional dual-substrate temperature compensation of equal cross-sectional area. Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 4 Filtering effects according to different needs. The shape can be optimized to design a specific substrate (i 2) shape. For flat plates with different cross-sections, the same shape can be used. The optimization method is used to design the geometric shape of the temperature-compensated substrate (work 4), and the design process is innovative and consistent. 5. All-fiber design, no insertion loss compared with thin film filters. 6 · With temperature compensation function, excellent center wavelength stability. 7. Use materials with different expansion coefficients for passive temperature compensation control, and the specific shape of the temperature compensation substrate (1 4) can be used to achieve the goal of = compensation control. 7 This paper size applies to China National Standard (CNS) A4 (210 x 297 public love) '~' ~ ---- ~ _____ 535015 A7