200848818 九、發明說明： 【發明所屬之技術領域】 路中光學系統相關，尤其係關於—種應用於被動光網 【先前技術】 在j雜來頻繁的現代生种，網路已成為重要 纖=有低損耗、高容量、無電磁輻射、保密性 2 光，路取代舊有的齡網路是料國家正在 光網=mFiber tg服x，fttx)的網路技術中，主動 isr吨a〇n)較早開始發展，其相關標準 ”义為成熟。然而’由於被動光as 較触_轉具械本低、敎性如及規劃 ^ *可望成為未來提供光纖到府的主流技術。 ^ f一為一被動光網路之示意圖。如圖一所示，被動光網路你 j早點對多點式(p〇int_t〇_multip〇int)的架構。位庫 =設皮，光纖線路局端(0响- -備io t.、it用者之住豕或辦公撕的設備16卿稱為用戶端 fffptol Netwwk Unit，ONU) 〇 OLT 12 與多個 0NU (職^ 糸經由光纖及光分路器㈣㈣_㈣14彼此連接。在〇l 與光分路f 14之間，上行與下行的信舰經由單-光纖傳輪。 ίΐ^器14和ί個0膨之間的連線可被視為被動光網路中的 分支(branch)。此範例係以該被動光網路包含四個分支之情況 例:於實際應用中，一個〇LT可供32個或更多〇即之連結及 5 200848818 光分路分位於 標識各支路的方法。舉例來說對ί第==特定， 遽波器，㈣遽======別設置- 光線，管时可_每-财支路各自反射的 便、低成本、牢靠地被裝設於網 糾是魏触歧朗，= 之解决方案此否被實現，實為至關重要。 丁應 如熟悉此領域之技術者所知，光纖光柵_ fbG)利來反射特纽段的光線。如第68j73() ^及第6936235號美國專利中所揭露，傳統的FBG 讲 ^特=支架上’其兩端之光纖係以融烊的方式與網路=二 而，在被動光網路的應用中，特別是在接近使用相〇而了 上述裝設及連接方式並不方便’ FBG亦不易被妥善保養維護。 因此，本發明之一範疇在於提供可以滿足低成本、方 :的呆養維護等要求的、用以標識被動光網路中之支 【發明内容】 本發明提供一種用以標識一被動光網路中之一支路的光與哭 件。該光學器件係裝設於該支路中並包含一光纖光栅與一套接其 (ferrule)。該光纖光柵係用以反射一特定波段的光，其中該特定& 段係對應於該支路。該套接管則係用以盛載部分或^部=該=纖 200848818 藉由該套接管’光纖光栅可被方便地裝設於現有的被動光網 幢j過監控該光纖光栅是紐射該特定波段的絲，被動光 、、、、纟理者可判斷該支路是否存在異常狀況。 _本Ϊ明之優點與精神可以藉由以下的發卿述及所附圖式得 判進一步的瞭解。 【實施方式】 =本發明之—具體實_為—光學將。該光學器件包含 總ff官與—光纖光栅。該套接管係収盛載部分或全部之該光 可人二(A)為該套接管之示意®。如KA)所示，設計者 ^ΐ接官21包含一毛細管(ca_iy) 21A，並可令毛細管21A 大，光纖光栅之外徑，以將部分或全部之該光纖光拇 =置於毛細f 21A巾。圖二⑻該絲別㈣之侧。如圖二⑻ 春^ 一光纖光栅22係設置於毛細管21A中。於實際應用中’ ίΐ!^1之材料可包含陶纽/或金屬或任何可用於連接器套接 二之材料，並且光纖光柵22與套歸21可透職接劑彼此固 疋0 如圖三所示，根據本發明之光學器件(20A〜20D)可被裝設於 中的光分路器14和每一個0膨之間。若為達成辨識 ΐΐΐϊΐϊ”的，每—光學11件中的光纖光柵所能反射的測 龜叙波段可皆不相同。於此範例中，光學器件20Α〜編 的光纖光柵所能反射之波段分別為λ1、λ2、λ3和λ4。 為避免對真正的通信資料造成干擾，Μ、λ2、λ3和λ4亦不 同於該被動光網路中用以傳遞資料之一資料波段。根 纖通信網路規範’由OLT 12傳送至該等0NU的 行信號)之資料波段為测nm和1550nm，由該等1；^= iW的Λ信號(亦即上行信號)之資料波段則為1310腿。因 此，λ卜λ2、入3和人4四者彼此不同之外，亦皆不同於濯腿、 7 200848818 1550nm和1310nm。舉例而言，λ1、λ2、λ3和λ4可被設定在 1560nm〜1620nm 之間。 圖二中的監測設備30可用以提供四種波段分別為λ1、λ2、 λ3 和 λ4 的測試信號，分波多工(Wavdength Divisi()n Multiplexing， WDif)耦合器32則係用以將該等測試信號混入〇LT 12送出的資 料^號中。因此，如圖三所示，由分波多工耦合器32透過光分 路器14傳送至各分支的#號波段同時包含i49〇nm、 λΐ、λ2、λ3 和 λ4。 圖三中的光學器件20Α係用以標識0Νυ 16Α所在的支路。 圖二(C)為光學器件20Α中的光纖光栅22之示意圖。如圖二(c)所 不，由左端進入此光纖光栅的光線之波段同時包含l49〇i皿、 1550nm、λΐ、λ2、λ3和λ4。其中，只有波段為λ1的光線會被反 射回左方，其他波段的光線皆可通過該光纖光柵，並由該光 柵的右端被輸出。 '' 、八同樣地’對〇NU 16Β所在之分支上的光學器件20β，只有 波段為λ2的光線會被反射回分波多工耦合器32 ;對〇NU 16^所 =分，上的光學器件重，只有波段為Μ的光線會被反射回分 工=合器32 ;對〇NU 16D所在之分支上的光學器件2〇D， /、有波段為λ4的光線會被反射回分波多工耦合器32。 ^巧Μ各不相同，各支路反射的測試健亦各不由同^支 路可猎此被區分。 如圖三所示，分波多工耦合器32亦係用以將波段為Μ、 3和λ4之反射信號與波段為i3i〇nm之上行传號分 Ζΐ等反射信號由傳遞自光分路器14之信號中“。^著’，、 λΐ、λ2、λ3和λ4之反射信號被傳送至監測設備3〇 馮31〇nm之上行信號則被繼續傳送至〇LT 12。 ^ 測試用的反射信號對OLT 12造成干擾。此外，上行 200848818 翁财直接通過根據本 觉本it應用中，圖二⑻所示之套接管21可包含—遽光片或 =與/ M*可麵上—層濾光薄膜，以反射/吸收I些特定波段 的，。舉例來說，圖三中的光學器件2〇A之接近〇服的那 了^被鑛上用以反射/吸收波段為λ卜λ2、λ3和M之光線的遽 ^膜，此，某些未被反射之波段為λ1的信號以及其他波^ 為λ2、λ3和λ4的測試信號將不會進入〇NU 16Α， ONU16A造成干擾。 I个曰钉 J行的，冑光網路中有許多地方係β光學連接器(_似叫 和光子配接斋(adapter)連接光纖。根據本發明之光學器件可直 與連接ϋ和配接器相連’或者取代連接器或配接^。藉此，無須 重，設計瓣的連接方式’即可加人具_以標識 ^中 於實際應用中，位於光學器件2〇兩端的表面可經過物理接 觸(Physical Contact, PC)程序研磨或傾斜物理接觸(Angled ^200848818 IX. Description of the invention: [Technical field of invention] The optical system in the road is related to, in particular, the application to the passive optical network. [Prior Art] In the modern generation where the frequency is frequent, the network has become an important fiber. There are low loss, high capacity, no electromagnetic radiation, confidentiality 2 light, the road replaces the old age network is expected to be in the network technology of the optical network = mFiber tg service x, fftx), active isr tons a〇n ) It started to develop earlier, and its relevant standards are mature. However, due to the low light, the ambiguity, and the planning of passive light, it is expected to become the mainstream technology for providing fiber to the future. ^ f A schematic diagram of a passive optical network. As shown in Figure 1, the passive optical network is an early-to-multipoint (p〇int_t〇_multip〇int) architecture. Bit library = skin, fiber line office (0 ring - - io t., it is the user's residence or office tearing device 16 is called the client fffptol Netwwk Unit, ONU) 〇 OLT 12 and multiple 0NU (service ^ 糸 via fiber and optical branching (4) (4) _ (4) 14 are connected to each other. Between the 〇l and the optical branch f 14, the uplink and downlink letters From the single-fiber transmission. The connection between the device 14 and the 0-expansion can be regarded as a branch in the passive optical network. This example uses the passive optical network to include four branches. Case: In practical applications, one 〇LT can be connected to 32 or more 及 and 5 200848818 optical tributary is located in the method of identifying each branch. For example, for ί == specific, chopper , (4) 遽 ====== Do not set - light, tube can be _ every - financial branch of each reflecting the light, low cost, firmly installed in the network is Wei touch lang, = the solution Whether it is realized or not is very important. As should be known to those skilled in the art, the fiber grating _fbG) is used to reflect the light of the singular section. As disclosed in U.S. Patent No. 68, j. The traditional FBG speaks on the bracket = the fiber on both sides of the bracket is connected to the network in the form of a fusion method. In the application of the passive optical network, especially in the near-use, the above installation and The connection method is not convenient. FBG is also not easy to be properly maintained. Therefore, one of the scope of the present invention is to provide a low level of satisfaction. The present invention provides a light and crying member for identifying a branch of a passive optical network. The invention provides a support for the passive optical network. The optical device is mounted in the branch and includes a fiber grating and a set of ferrules for reflecting light of a particular band, wherein the specific & segment corresponds to the branch. The sleeve is used to hold the part or the part = the = fiber 200848818 by means of the socket - the fiber grating can be conveniently installed in the existing passive optical network block to monitor the fiber grating is the specific The band of the filament, the passive light, the , and the clerk can determine whether the branch has an abnormal condition. The advantages and spirit of this book can be further understood by the following statements and drawings. [Embodiment] = The present invention - the actual _ is - optical will. The optics comprise a total of ff and fiber gratings. The sleeve is adapted to receive part or all of the light (A) as a schematic of the socket. As shown by KA), the designer has a capillary (ca_iy) 21A and can make the capillary 21A large, the outer diameter of the fiber grating, to place some or all of the fiber optical thumb = capillary f 21A. towel. Figure 2 (8) The side of the wire (4). As shown in Fig. 2 (8), a fiber grating 22 is disposed in the capillary 21A. In practical applications, the material of 'ίΐ!^1 may include ceramics or metal or any material that can be used for connector sockets, and the fiber grating 22 and the sleeves are permeable to each other. As shown, the optical devices (20A to 20D) according to the present invention can be mounted between the optical splitters 14 and each of the 0 expansions. In order to achieve the identification, the fiber-grating gratings in each of the 11 optical components can be reflected differently. In this example, the optical fiber gratings of the optical device 20Α~ Λ1, λ2, λ3, and λ4. To avoid interference with real communication data, Μ, λ2, λ3, and λ4 are also different from the data band used to transmit data in the passive optical network. The data band transmitted by the OLT 12 to the line signals of the 0NUs is nm and 1550 nm, and the data band of the Λ signal (ie, the up signal) of the 1; ^= iW is 1310 legs. Therefore, λ Λ2, 3, and 4 are different from each other, and are also different from lame, 7 200848818 1550 nm and 1310 nm. For example, λ1, λ2, λ3, and λ4 can be set between 1560 nm and 1620 nm. The monitoring device 30 can be used to provide test signals of four wavelength bands λ1, λ2, λ3, and λ4, respectively, and a Wavdength Divisi () n Multiplexing, WDif) coupler 32 is used to mix the test signals into the signal. 〇LT 12 sent the information ^ number. Because As shown in FIG. 3, the #-band transmitted from the split-multiplexer 32 through the optical splitter 14 to each branch includes i49〇nm, λΐ, λ2, λ3, and λ4. The optical device 20 in FIG. It is used to identify the branch where 0Νυ16Α is located. Figure 2(C) is a schematic diagram of the fiber grating 22 in the optical device 20Α. As shown in Figure 2(c), the band of light entering the fiber grating from the left end contains l49〇. i dish, 1550nm, λΐ, λ2, λ3, and λ4. Among them, only the light of the band λ1 will be reflected back to the left, and the light of other bands can pass through the fiber grating and be outputted by the right end of the grating. Similarly, the optics 20β on the branch where the NU 16Β is located, only the light with the band λ2 will be reflected back to the split-wave multiplexer 32; for the 〇NU 16^==, the upper optics are heavy, only Light with a band of 会 will be reflected back to the division of labor = combiner 32; for the optics 2 〇 D on the branch where 〇 NU 16D is located, /, the light with band λ4 will be reflected back to the split multiplex coupler 32. The cockroaches are different, and the test results of the reflections of the branches are also inconsistent. The branch circuit can be distinguished by this. As shown in Fig. 3, the split-wave multiplexer 32 is also used to reflect the reflected signals of the bands Μ, 3, and λ4 with the upstream signals of the band i3i〇nm. The signal is passed from the signal transmitted from the optical splitter 14. The reflected signals of ', λ ΐ, λ2, λ3, and λ4 are transmitted to the monitoring device 3 〇 〇 31 〇 nm of the upstream signal is then transmitted to 〇 LT 12 . ^ The reflected signal for testing interferes with the OLT 12. In addition, the upward 200848818 Wengcai directly through the application according to the present application, the socket 21 shown in Fig. 2 (8) may comprise - a light film or a / M * surface layer - filter film for reflection / absorption I have specific bands, For example, the optical device 2〇A in Figure 3 is close to the 〇^ film that is used to reflect/absorb the light beams of the wavelengths λb, λ3, and M, and some The signal of the reflected band λ1 and the other test signals of λ2, λ3 and λ4 will not enter 〇NU 16Α, and the ONU16A causes interference. There are many places in the Twilight network, and there are many places in the Twilight network, which are β-optical connectors (like and photon adapters). The optical device according to the present invention can be directly connected to the connection and the connection. Connected to 'or replace the connector or mating ^. Thereby, no need to be heavy, the design of the connection of the valve 'can be added _ to identify ^ in the actual application, the surface of the two ends of the optical device 2 can pass the physics Contact (Physical Contact, PC) program for grinding or tilting physical contact (Angled ^
Contact，APC)程序研磨，以令光學器件2〇能與例如Fc 、 SC連接器、ST連接器、LC連接器或mu連接器等各種連接哭 相連接。 請參閱圖四(A)，圖四(A)係繪示根據本發明之另一具體 例。於此實施例中，除了套接管41和光纖光柵42之外:與= 件40還進-步包含光纖43及一連接/鎖定結構44。透^二 及連接/鎖定結構44，光學器件40可與其他的光纖或光學元 連接，並成為具有標識支路功能之光學連接器。該光 以為一 FC連接器、一 SC連接器、一 ST連接器、一 Lc遠^哭 或- MU連接器。此外，光纖光柵42可如圖四⑻所示 ^ 成於光纖43之上。 200848818 請參閱圖五(A)，圖五(A)係繪示根據本發明之另一具 例。於此實施例中，除了套接管51和光纖光栅52之外^光 件50還進一步包含一導連/鎖定結構53。套接管51係裝配二| 連/鎖定結構53中。如圖五(B)所示，導連/鎖定結構53 ^二， 分別連接一光學連接器(54、55)。藉此，光學器件5〇 標識支路功能之光學配接器。光學連接器54和55 FC連接器、一 Sc連接器、一 ST連接器、一 tc :一 MU連接器。 延搔或一 請參閱圖六(A)，圖六(A)係繪示根據本發明之另一且 a 例。於此實施例中，除了套接管61和光纖光柵62之:去二， 件60還進一步包含一導連/鎖緊結構63。如圖六(B)所示， 鎖緊結構63的左端可與一連接器64相連，導連/鎖腎妹媸連 右端則可與一配接器65相連。藉此，光學器件6〇可" 挪 識支路功能之光學連接/配接器。於實際應用中，連 私 為一 FC連接器、一 SC連接器、一 ST連接器、^ ^ 一 MU連接器。 ^連接态或 請參閱圖七，圖七係繪示根據本發明之另一且 ^施例中’除了套接管71和光纖光柵72之外、， 一分ϋ工耦合器73、一個光發射裴置74和兩個 先接收裝置75。分波多工輕合器π係輕合於光發 接收裝置75 *光纖光柵72之間。套接管71 *光、7 ^ 普通光套接管的導連(光錢)和㈣侧， ;:，光學器件70從而成為具有標識支路功 ’光學11件7G㈣具有標識纽舰之光學雙工Ϊ 、圖四(A)、圖五(A)、圖六(a)及圖七所示之光學哭 取代現行的被動光網路中的連接器、配接器和多工器°。 200848818 用根據本發明之光學器件無須大幅更動被動光網路中的硬體設 備。相較於改變其他硬體裝置，更換連接器、配接器和多工器的 人工及硬體成本皆相當低。由此可見，採用根據本發明的光學器 件來標識被動光網路中之支路具有方便、快速、低成本等優點f 圖八係繪示數種裝設光學器件20之位置的範例。於此範例 中’標號24、26及27所指之方塊分別為一室内插座(wau扭沈）， 標號25所指之方塊則代表一室外配線盒。於16八所在之分 支中’光學器件20A係裝設於室内插座24中。於〇nu mb所在 之分支中’光學器件20B及ONU 16B皆係裝設於室外配線盒乃 ，。於ONU16C所在之分支中，光學器件2〇c則與〇NU ^裝 設在一起。於ONU 16D所在之分支中，光學器件2〇D係裝設 用以連接室内插座27及ONU 16D之跳線Μ的左端(靠近^内插 ^2^)。於實際應用中，光學器件2〇d亦可被裝設於跳線28的右 端(靠近ONU 16D)。根據實際需要，根據本發明之光學器件可被 裝設於上述之任一位置。 如上所述，藉由監控根據本發明之光學器件的特定波段反射 特性，被動光網路的各支路得以被區分，網路管理者並得以進一 步判斷气析各支路是否存在異常狀況。根據本發明之光學器件可 ^連接器和配接器相連，亦可被設計為直接取代連接器或配接 器。藉此，根據本發明之光學器件可提供方便、快速、低成本之 路在不影響網路中資料信號的情況下有效標識被動光網路中 ‘藉由以上較佳具體實施例之詳述，係希望能更加清楚描述本 發明之特，^精神，而並非以上述所揭露的較佳具體實施例來對 本發明^範嚀加以限制。相反地，其目的是希望能涵蓋各種改變 及具相等性的安排於本發明所欲申請之專利範圍的範轉内。 11 200848818 圖式簡單說明】 圖一為被動光網路之示意圖。 圖二為根據本發明之光學器件之示意圖。 圖 。圖三為練據本發明之光學器件裝設於被減網路中之示音 學連==四⑼騎彻根據綱之光學器件作為光 學配接器之示意圖 咅I五晴會示採用根據本發明之光學 器件作為光 學連接/配接器之示意圖 採祕據本發0狀光钟件作為光 意圖。 圖七鱗示採雜據本發明之光學器件作為光學 多工器之示 圖八麟讀雜縣㈣之絲器件_設位置範例 【主要元件符號說明】 12 :光纖線路局端 16Α〜16D :用戶端設備 21 :套接管 21Β :套接管之表面 24'26'27 :室内插座 14 :光分路器 20、20Α〜20D ··光學器件 21A ·毛細管 22 :光纖光栅 25 :室外配線盒 12 200848818 28 ··跳線 30 :監測設備 32 :分波多工耦合器 40 :光學器件 41 :套接管 42 :光纖光柵 43 :光纖 44 :連接/鎖定結構 50 :光學器件 51 :套接管 52 :光纖光栅 53 :導連/鎖定結構 54、55 :光學連接器 60 :光學器件 61 :套接管 62 :光纖光栅 63 :導連/鎖緊結構 64 :連接器 65 :配接器 70 :光學器件 71 :套接管 72 :光纖光柵 73 :分波多工耦合器 74 :光發射裝置 75 :光接收裝置 13The Contact, APC) program is ground so that the optics 2 can be connected to various connections such as Fc, SC connectors, ST connectors, LC connectors or mu connectors. Referring to Figure 4(A), Figure 4(A) shows another embodiment in accordance with the present invention. In this embodiment, in addition to the ferrule 41 and the fiber grating 42, the optical fiber 43 and a connection/locking structure 44 are further included in the step. The optical device 40 can be coupled to other optical fibers or optical elements and can be an optical connector having an identification branch function. The light is an FC connector, an SC connector, a ST connector, an Lc far crying or - MU connector. In addition, the fiber grating 42 can be formed on the optical fiber 43 as shown in Fig. 4 (8). 200848818 Please refer to FIG. 5(A), and FIG. 5(A) illustrates another example according to the present invention. In this embodiment, the optical component 50 further includes a lead/lock structure 53 in addition to the ferrule 51 and the fiber grating 52. The ferrule 51 is assembled in a two-connection/locking structure 53. As shown in FIG. 5(B), the lead/lock structure 53 is connected to an optical connector (54, 55). Thereby, the optical device 5 光学 identifies the optical adapter of the branch function. Optical connectors 54 and 55 FC connectors, a Sc connector, an ST connector, a tc: a MU connector. Continuation or one See Figure 6(A), and Figure 6(A) shows another and a example according to the present invention. In this embodiment, in addition to the ferrule 61 and the fiber grating 62, the member 60 further includes a lead/lock structure 63. As shown in Fig. 6(B), the left end of the locking structure 63 can be connected to a connector 64, and the right end of the guiding/locking kidney can be connected to an adapter 65. Thereby, the optical device 6 can <cognize the optical connection/adaptor of the branch function. In practical applications, the private connection is an FC connector, an SC connector, an ST connector, and a ^ MU connector. ^Connected state or please refer to FIG. 7. FIG. 7 is a diagram showing another embodiment of the present invention, except for the socket 71 and the fiber grating 72, a split-coupling coupler 73 and a light-emitting device. 74 and two pre-receiving devices 75 are provided. The split-wave multiplexer π system is lightly coupled between the light-emitting device 75 * fiber grating 72. Socket 71 * light, 7 ^ ordinary light sleeve connection (light) and (four) side, ::, optical device 70 thus becomes the optical branch with the identification branch work 'optical 11 pieces 7G (four) with the identification of the new ship The optical crying shown in Figure 4 (A), Figure 5 (A), Figure 6 (a) and Figure 7 replaces the connectors, adapters and multiplexers in the current passive optical network. 200848818 With the optics according to the invention there is no need to significantly change the hardware in the passive optical network. The labor and hardware costs of replacing connectors, adapters, and multiplexers are quite low compared to changing other hardware devices. Thus, the use of an optical device in accordance with the present invention to identify a branch in a passive optical network has the advantage of being convenient, fast, and low cost. Figure 8 shows an example of the location of several optical devices 20. In this example, the blocks indicated by the numerals 24, 26 and 27 are respectively an indoor socket (wau twisting), and the square indicated by reference numeral 25 represents an outdoor wiring box. The optical device 20A is mounted in the indoor socket 24 in the branch where the 16 is located. In the branch where Yu 〇 nu mb is located, 'optical device 20B and ONU 16B are installed in the outdoor wiring box. In the branch where the ONU16C is located, the optical device 2〇c is mounted with the 〇NU^. In the branch where the ONU 16D is located, the optical device 2〇D is provided to connect the left end of the jumper 室内 of the indoor socket 27 and the ONU 16D (near ^ interpolation ^2^). In practical applications, the optical device 2〇d can also be mounted on the right end of the jumper 28 (near the ONU 16D). The optical device according to the present invention can be installed at any of the above positions according to actual needs. As described above, by monitoring the specific band reflection characteristics of the optical device according to the present invention, the branches of the passive optical network can be distinguished, and the network manager can further judge whether there is an abnormal condition in each of the cavitation branches. The optical device according to the present invention can be connected to the connector and can also be designed to directly replace the connector or the adapter. Thereby, the optical device according to the present invention can provide a convenient, fast, and low-cost way to effectively identify the passive optical network without affecting the data signals in the network. By the detailed description of the above preferred embodiments, It is intended that the present invention be more clearly described and not limited by the preferred embodiments disclosed herein. On the contrary, the intention is to cover various modifications and equivalents within the scope of the patent scope of the invention. 11 200848818 Simple description of the diagram] Figure 1 is a schematic diagram of a passive optical network. Figure 2 is a schematic illustration of an optical device in accordance with the present invention. Figure. Figure 3 is a schematic diagram of the optical device according to the present invention installed in the network to be reduced == four (9) riding according to the optical device as an optical adapter 咅I Wuqing will be used according to this The optical device of the invention is illustrated as an optical connection/adaptor according to the present invention. Figure 7 is a diagram showing the optical device according to the present invention as an optical multiplexer. The picture of the eight-core reading (four) wire device _ setting position example [main component symbol description] 12: optical fiber line office end 16 Α ~ 16D: user End device 21: ferrule 21 Β: surface of the ferrule 24'26'27: indoor socket 14: optical splitter 20, 20 Α 20 20D · optical device 21 A · capillary 22 : fiber grating 25 : outdoor wiring box 12 200848818 28 · Jumper 30: Monitoring device 32: Split-wave multiplexer 40: Optical device 41: Socket 42: Fiber grating 43: Fiber 44: Connection/locking structure 50: Optical device 51: Socket tube 52: Fiber grating 53: Leading/locking structure 54, 55: optical connector 60: optics 61: ferrule 62: fiber grating 63: lead/lock structure 64: connector 65: adapter 70: optics 71: ferrule 72 : Fiber Bragg Grating 73 : Splitting Multiplex Coupler 74 : Light Emitting Device 75 : Light Receiving Device 13