1285756 九、發明說明： 【發明所屬之技術領域】 本發明系有關於光纖通信領域技術，主要是指—種拼 ，裝式異膜雙光纖頭及其製作方法。該異膜雙光纖頭可以應 用在膜片型高隔離度波分複用器上，也可以應用在各種其 ' 他用途的微光器件型光器件上。 【先前技術】 在以光學 >專膜（filter)技術爲基礎的，與光學微透 鏡組合的波分複用器件（WDM)中，帶不同性質膜的雙光纖 頭是一種關鍵元件，更由於在光纖通信系統中，對這種波 分複用器件的波長隔離度（Isolation)要求越來越高，只 依靠透鏡前面一個膜片難以達到40分貝以上的隔離度。所 以在膜片的反射光路中，在微光透鏡和光纖端面之間增加 ‘春一個膜片，或直接在反射端光纖端面上鍍濾光膜成爲通行 . 的解決途徑。由於增加膜片會增加裝配工藝的難度、穩定 性下降和爲了得到小的插入損耗（Insertion Loss)必須 考慮到輸入端光纖和反射端光纖的光程匹配”問題，所 以採用光纖端面鍍濾光膜的辦法比較簡單可行。但是由於 輸入光纖和反射端光纖靠得非常近，在輸入光纖端面鑛增 透膜（AR coating)，而在反射光纖端面鍍濾光膜的工藝複 雜、成本南、成品率低。 5 1285756 【發明内容】 本發明的目的旨在克服現有技術中存在的問題而提供 一種拼裝式異膜雙光纖頭及其製作方法。 實現本發明的技術方案是：這種拼裝式異膜雙光纖頭 包括光纖、毛細管、增透膜、濾、光膜，以及鑛膜和拼裝方 法，其中異膜雙光纖頭的主要結構是， 在一毛細管内設置有鍍有增透膜的光纖的單光纖頭； Φ 和在另一毛細管内設置有鍍有濾光膜的光纖的單光纖頭； 將上述兩根鍍有不同膜的單光纖頭拼裝在一起即爲異膜雙 光纖頭。 上述異膜雙光纖頭的結構還包括： 在一侧面被磨平的毛細管内設置有光纖並在其端面經 抛光後鍍有增透膜的單光纖頭；和 在另一侧面被磨平的毛細管内設置有光纖並在其端面 抛光後鍍有濾光膜的單光纖頭；和 參 將上述兩根鍍有不同膜的單光纖頭拼裝在一起即組成 異膜雙光纖頭；和 拼裝後的兩根毛細管内的光纖邊緣的間距應滿足設計 要求，和 帶有不同膜的兩根毛細管的拼裝面爲平面，且該平面 -與毛細管内光纖邊緣的間距應滿足設計要求；和 - 光纖端面爲一平面或斜面。 6 1285756 實現本發明的製作方法1是：取一根毛細管，先將其 侧面磨平到内孔邊緣爲止，再將光纖插入毛細管内並固定 在一起；和將毛細管和光纖組成的光纖頭端面拋光成一平 面或斜面（如果抛光成斜面，將要鍍不同膜的光纖頭磨成 相反方向）；和在抛光後的光纖端面分別鍍上增透膜或滤光 膜；和將鍍有增透膜的單光纖頭與鍍有濾光膜的單光纖頭 沿軸向拼裝固定在一起，成爲異膜雙光纖頭，且達到兩光 纖端面一致和兩光纖的間距滿足設計要求。 方法1還包括： 將插有光纖的圓形毛細管的圓周面加工出—軸向平面 ，且該平面與毛細管内光纖邊緣的間距滿足拼裝和設計要 玻璃、陶曼、金屬、塑膠等。和 毛細管的形狀包括半圓、大半圓、方形，其材質包括 光纖通過包括膠粘或鐳射焊等工藝手段固宏力1‘总1285756 IX. Description of the Invention: [Technical Field] The present invention relates to the field of optical fiber communication technology, and mainly relates to a type of spelling and mounting type double-fiber head and a manufacturing method thereof. The double-fiber double-fiber head can be applied to a diaphragm type high isolation wavelength division multiplexer, and can also be applied to various micro-optical device type optical devices for other purposes. [Prior Art] In a wavelength division multiplexing device (WDM) based on an optical > filter technology combined with an optical microlens, a dual fiber head with a film of different properties is a key component, and more In fiber-optic communication systems, the wavelength isolation (Isolation) requirements of such wavelength division multiplexing devices are becoming higher and higher, and it is difficult to achieve isolation of more than 40 decibels by relying only on one diaphragm in front of the lens. Therefore, in the reflected light path of the diaphragm, a film of spring is added between the microlens lens and the end face of the fiber, or the filter film is directly coated on the end face of the fiber at the reflection end. Since the increase of the diaphragm will increase the difficulty of the assembly process, the stability is degraded, and in order to obtain a small insertion loss (Insertion Loss), the optical path matching of the input end fiber and the reflection end fiber must be considered. The method is relatively simple and feasible. However, since the input fiber and the reflection end fiber are very close, the AR coating is applied to the end face of the fiber, and the process of plating the filter film on the end face of the reflection fiber is complicated, cost south, and yield. 5 1285756 SUMMARY OF THE INVENTION The object of the present invention is to provide an assembled hetero-film double-fiber head and a manufacturing method thereof by overcoming the problems existing in the prior art. The technical solution of the present invention is: the assembled film The double fiber head includes an optical fiber, a capillary tube, an antireflection film, a filter, a light film, and a mineral film and assembling method, wherein the main structure of the double film double fiber head is a single fiber provided with an antireflection film in a capillary. a fiber-optic head; Φ and a single-fiber head provided with a fiber coated with a filter film in another capillary; the above two single lights plated with different films The heads are assembled together to be a double-fiber double-fiber head. The structure of the above-mentioned double-fiber double-fiber head further includes: a single fiber provided with an optical fiber in a capillary that is smoothed on one side and polished with an anti-reflection film on the end surface thereof. a single fiber head with an optical fiber disposed on the other side of the capillary and having a filter film coated on the end face thereof; and a plurality of single fiber heads plated with different films are assembled Forming the double-fiber head of the membrane; the spacing between the edges of the fibers in the two capillaries after assembly should meet the design requirements, and the assembly faces of the two capillaries with different membranes are plane, and the plane-with the edge of the fiber inside the capillary The spacing should meet the design requirements; and - the fiber end face is a plane or bevel. 6 1285756 The manufacturing method 1 of the present invention is to take a capillary, first smooth the side of the side to the edge of the inner hole, and then insert the fiber into the capillary. And fixed together; and the end face of the fiber head composed of the capillary tube and the optical fiber is polished into a plane or a slope (if polished into a bevel, the fiber head to be plated with different films is ground to the opposite side And an antireflection film or a filter film is respectively coated on the end face of the polished fiber; and the single fiber end plate coated with the antireflection film and the single fiber head coated with the filter film are axially assembled and fixed together The double-fiber head of the different film and the uniformity of the two fiber ends and the spacing of the two fibers meet the design requirements. The method 1 further includes: processing the circumferential surface of the circular capillary with the optical fiber into an axial plane, and the plane and the capillary The spacing of the edges of the fiber satisfies the assembly and design requirements of glass, taman, metal, plastic, etc. The shape of the capillary includes semicircle, large semicircle, square, and its material includes the fiber through the process including adhesive or laser welding. total
;和在鑛有 1 一片濾光 1285756 片（厚度符合設計要求）。再將此兩根光纖頭沿軸向平面拼 衣固疋在一起成爲異膜雙光纖頭，且達到兩光纖端面一致 和兩光纖邊緣的間距滿足設計要求。 方法2還包括：將插有光纖的圓形毛細管的圓周面加 工出一軸向平面，且該平面與毛細管内光纖邊緣的間距滿 足設計要求。 貝現本發明的製作方法3是：將拋光後的光纖頭 >兩種，並分別鑛上或貼上不同類型的濾光膜；和將兩根鑛 有或貼有不同類型濾光膜的光纖頭拼裝在一起。 本發明具有如下優點： 1、 由於採用輸入端光纖頭和輸出端光纖頭分別製造 加工、分別鍍膜，最後將其拼裝在一起的新工藝方法，解 決了鍍膜上的困難，可實現大批量生産，提高了產品的成 品率，降低了成本。 2、 在方法2中，由於兩根光纖頭是拼裝成一體的， 所以在拼裝時可以軸向調節來平衡光程，實現最小的反射 端插入損耗。 【實施方式】 本發明包括産品發明和方法發明；其中實施例一（請 ，閱第圖和第一圖）包括兩根毛細管1和鑛有不同膜的 光纖2。這兩根毛細管的外圓周都有一個軸向平面（拼裝 面3 )，該平面必須與毛細管的孔的邊緣足夠近，以使光線 8 1285756 通過透鏡後的角度不致過大。在這兩根毛細管的孔内分別 裝有鍍有不同膜的光纖2 (在波分複用器件中通常一根光 纖碩鍍增透膜，也叫防反射膜，作爲輸入光纖用；而另一 根光纖頭通常鍍濾光膜作爲反射端用，使需要透過的波長 透過’需要戴止的波長截止’以增加二種波長的隔離度）， 然後將兩根毛細管沿平面拼接在一起，拼接後的兩根光纖 應盡可能的挨近，以滿足設計要求，同時兩根毛細管的前 >端面必須—致，其中每根毛細管的端面可以是平面、也可 以是一斜面；如果是斜面應以6-8。較爲合適，如果毛細管 的端面是一斜面’磨抛時兩根光纖頭斜的方向相反從而 在拼接時兩個斜面方向相同。在本實施例中，對於毛細管 2 以是大半圓形、方形或其他任何形狀;對於:二 吕的材貝可以是玻璃的、陶瓷的、金屬的、 以是其他適用材料。 膠的’也可 製作實施例一的方法：首先取一根毛細管， 总 I的孔内插入光纖並通過枯接或鐳射焊接等方法 = 在毛細官的孔内，如果使用的毛細管是圓的 丰^ =4 該 靠近孔;如果使用的毛細管 本身▼有-平面，那麼該平面應儘量靠近孔 — 要=然後對光纖的端面進行抛光，拋光後的光纖二 以疋一平面，也可以是一斜面。在抛光後在光输° 鍍一種膜。這種方法的最大優越性在於可批=碩端面 確保質量。按照上述方法再製作錢另一種膜的光^並ί 9 1285756 ::::膜的光纖頭沿平面輪接或咖 / 如果兩根光纖的端面是斜面，其角度應一 樣向相反）’即成爲本發__雙光纖頭。〜 二〇(明芩閱第三圖和第四圖）的結構和製作方 基本相同。在兩根抛光 =二射膜。然後在其中一根作爲反射端用的心 $入邻't所要求的濾光膜片4。從先纖端發出的先必 須全部通過濾光膜片4。 取後把逆樣加工過的單光纖頭拼合在-起。光纖端面 與濾光膜片4頂端的拓她」▲ 九纖k面 右对數信，」 （請爹閱第四圖）可以是0或 > “疋於媒片厚度和折射率’ =、=Γ其後的透鏡的光程和從反射鏡回來= 近。通過調節根光纖端面的光程相等或非常接 特點之一。來進仃光程補償以減低損耗也是本發明的 =施例三的製作方法與實施例—基本相同， 抛光後的光纖頭分a兩接” 疋將 ,Α兩種，亚在兩種光纖頭的端面分別鍍 / R _料紐；錢再將兩㈣有或貼有不 同類型濾絲的光纖賴裝在一起。 圖和過程中需要-自製夾具(請參閱第五 平行並端部麟H錢包括― 、拚2 座5的側面連接有側壓板7,在基座5的頂面丄3 1285756 板6，在基座5的正面固定有端面定位板10。使用時， 把兩根不同膜的光纖頭端部頂在夾具的端面定位板10 上，然後沿平面钻接，再用上壓板6和侧壓板7壓緊即可。 本發明的鍍膜方法屬公知技術，在這裏省略不述。 惟以上所述者，僅爲本發明一較佳實施例而已，並非 用來限定本發明實施之範圍，故舉凡依本發明申請專利範 圍所述之形狀、構造、特徵及精神所爲之均等變化與修飾， > 均應包括于本發明之申請專利範圍内。 【圖式簡單說明】 第一圖，爲本發明之總體結構示意圖，表示兩根裝有光纖 的毛細管拼裝在一起。 第二圖，爲第一圖之侧視圖。 第三圖，爲本發明之另一結構示意圖。 _ 第四圖，爲第三圖之側視圖； 第五圖，爲本發明所需之夾具示意圖。 第六圖，爲第五圖之侧視圖。 【主要元件符號說明】 1 毛細管 2 光纖 3 拼裝面 1285756 4 濾光膜片 5 基座 6 上壓板 7 侧壓板 8 調整螺栓 9 彈簧 10 端面定位板And in the mine there is 1 piece of filter 1285756 pieces (thickness meets design requirements). The two fiber ends are then assembled together in an axial plane to form a double-fiber head of the film, and the end faces of the two fibers are uniform and the spacing between the edges of the two fibers meets the design requirements. Method 2 further includes machining the circumferential surface of the circular capillary with the fiber inserted into an axial plane, and the spacing of the plane from the edge of the fiber within the capillary meets design requirements. The production method 3 of the present invention is as follows: two kinds of polished fiber heads are selected, and different types of filter films are respectively attached or affixed; and two kinds of mineral filters are attached or affixed with different types of filter films. The fiber ends are assembled together. The invention has the following advantages: 1. Since the input end fiber head and the output end fiber head are separately manufactured and processed separately, and the new process method is finally assembled together, the difficulty on the coating film is solved, and mass production can be realized. Improve product yield and reduce costs. 2. In Method 2, since the two fiber ends are assembled into one body, the optical path can be adjusted axially during assembly to achieve minimum reflection insertion loss. [Embodiment] The present invention includes a product invention and a method invention; wherein the first embodiment (please, see the figure and the first diagram) comprises two capillary tubes 1 and an optical fiber 2 having different membranes. The outer circumferences of the two capillaries have an axial plane (assembly face 3) that must be close enough to the edge of the capillary hole so that the angle of light 8 1285756 after passing through the lens is not excessive. Optical fibers 2 coated with different membranes are respectively arranged in the holes of the two capillary tubes (in the wavelength division multiplexing device, usually one optical fiber is coated with an antireflection film, also called an antireflection film, as an input optical fiber; and the other The root fiber optic head is usually coated with a filter film as a reflective end, so that the wavelength to be transmitted is transmitted through the 'wavelength cutoff required to be worn to increase the isolation of the two wavelengths'), and then the two capillaries are spliced together along the plane, after splicing The two fibers should be as close as possible to meet the design requirements, and the front > end faces of the two capillaries must be identical, wherein the end faces of each of the capillaries can be either flat or beveled; if it is a bevel, it should be 6 -8. Preferably, if the end face of the capillary is a beveled surface, the two fiber ends are inclined in opposite directions so that the two bevel faces are the same in the splicing. In the present embodiment, the capillary 2 is generally semi-circular, square or any other shape; for: the material of the bismuth may be glass, ceramic, metallic, or other suitable materials. The glue can also be made in the method of the first embodiment: first take a capillary tube, insert the fiber into the hole of the total I and pass the method of dead or laser welding = in the capillary of the capillary, if the capillary used is round ^ =4 The hole is close to the hole; if the capillary itself used has a - plane, then the plane should be as close as possible to the hole - then = the end face of the fiber is polished, and the polished fiber is either a flat surface or a bevel . A film is plated in the light after polishing. The greatest advantage of this method is that it can be batched to ensure the quality. According to the above method, make another film of light and ί 9 1285756 :::: the fiber head of the film is rotated along the plane or the coffee / if the end faces of the two fibers are beveled, the angle should be the same as the opposite) The hair __ double fiber head. ~ The structure of the two 〇 (Ming 芩 第三 3rd and 4th drawings) is basically the same as the production. In two polished = two shots. Then, one of the cores used as the reflection end enters the filter film 4 required by the adjacent 't. The filter film 4 must be passed all the way from the fiber end. After taking the single-fiber head processed by the reverse sample, it is put together. The end face of the fiber and the top of the filter diaphragm 4 are extended. ▲ The nine-fifth-side right logarithmic letter, (see the fourth figure) can be 0 or > "疋 媒 媒 厚度 厚度 媒 媒 媒 折射率= 光 的 的 透镜 透镜 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近 近The manufacturing method is basically the same as the embodiment - the polished fiber head is divided into two, "two", two kinds, and the end faces of the two kinds of fiber ends are respectively plated / R _ material; the money will be two (four) or Fibers with different types of filter filaments are attached together. Figure and process need - self-made fixtures (please refer to the fifth parallel and end section of the collar), the side of the base 2 is connected with a side pressure plate 7, on the top surface of the base 5 丄 3 1285756 board 6, at the base The front surface of the seat 5 is fixed with an end positioning plate 10. In use, the end portions of the two different film fibers are placed on the end plate 10 of the jig, and then drilled along the plane, and then pressed by the upper plate 6 and the side plate 7 The coating method of the present invention is a well-known technique, and is not described herein. However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All changes and modifications of the shapes, structures, features and spirits described in the scope of the invention should be included in the scope of the present invention. [First Description of the Drawings] The first figure is the present invention. The overall structure diagram shows that two capillary tubes with optical fibers are assembled together. The second figure is a side view of the first figure. The third figure is another structural diagram of the present invention. _ The fourth figure is the third figure. Side view; fifth picture, The schematic diagram of the fixture required for the invention. The sixth diagram is the side view of the fifth diagram. [Main component symbol description] 1 Capillary 2 Fiber 3 Assembling surface 1285756 4 Filter diaphragm 5 Base 6 Upper plate 7 Side plate 8 Adjustment bolt 9 spring 10 end positioning plate