五、發明説明（γ ) 發明領域： 本發明一般係關於雷射光源與多模光纖間之耦合，特 別疋為了在短距離内保持一致的頻寬。 發明背景： 在建築物内局部區域光學網路通常使用多模光纖以傳 送高速訊號。多模光纖心蕊直徑大於單模光纖之心蕊以及 能夠傳送較多功率。大心蕊直徑亦簡化光纖彼此之拼接以 及對準或與其他網路之連接。 大部份多模光纖加以調整以使用於傳統發射光線二極 體(LED)光源。這些光源具有有限調變能力以及因而能夠 維持高達500MB/S數據之傳送。為了維持較高速率例如為 1.25GB/S(如Gigabit Ethernet標準），系統需要雷射光源 不過，例如為Fabry Perot(FP)雷射以及垂直凹腔表面發 射雷射(VCSELs)通常雜合至多模光纖為較小之穩定性，該 雷射優先地為較高功率，較為狹窄頻寬，較高調變速率，以 及具有I馬合至多陣列之能力。 與傳統LE1D光源比較，雷射(ρρ雷射以及VCSELs)產生較 小點尺寸，其未填滿多模光纖（即並非所有模同樣地激發） 三由於每一模傳送光線些微地不同，不同填充情況之間頻 寬將不同。較小點尺寸亦集中能量於多模光纖中央，其中 折射率分佈特別難以控制。雷射與多模光纖對準之少量變 化會使頻寬產生更進一步改變。 雖然多模光纖能夠對雷射光源作調整使頻寬為最佳化 ，调整需要麵制試歧生其他制之顧，其將使 、發明説明（之） 經濟部中央標準局員工消費合作社印裝 裝置費用增加以及變為_。{ 當―== 排列模光纖網路較為可靠的頻寬。依據本發明 滿於將擴展雷射光源光線輸出光束更均勾地填 源對二H:夕ΐ杈全部。由多模光纖維持頻寬對雷射光 '以及vd /不Γ敏性使得昇級網路裝置能夠利用FP雷射 以及VCSEL光源達成㈣準㈣不需要作試誤_整。 α本發明-項實施例嫌辭模域魏包含多難合 U有第-端部輕骂射絲，第；部連接至多模 光，，以及連接兩段之中間區段。轉合器中間區段在第一 及第二端部間逐漸變化以賴性地增加單模直徑或小於由 雷射光源發出進，合m端㈣度縣之光束。光束 直徑尺寸提高至將填充翅光纖多健之至少—半以及優 先全部。 在耦合器内心蕊由内側及外侧包層圍繞著。心蕊以及 至少内側包層沿著耦合器長度抽拉為較小斷面尺寸，其減 】尺寸將迫使光束傳播超過心蕊進入包層。在麵合5|第二 端部處保持充份内侧包層以導引擴張光束為所需要之光束 直徑。 在耗合為弟一端部處心蕊以及内側包層複合直徑大小 將幵>成單模或些微地較大與雷射光源連接。在第一端部處 數值孔徑以及光束直徑優先地與雷射光源相關特性相匹配 。在耗合器弟二端部處心蕊以及内側包層複合直徑大小將 ；~ 、1Τ------ (請先閱讀背面之注意事項存填寫本頁) 本紙張尺度適用中國國家標準（CNS )八4規格（21〇><297公釐 rV. Description of the Invention (γ) Field of the Invention: The present invention generally relates to the coupling between a laser light source and a multimode fiber, especially to maintain a consistent frequency bandwidth over a short distance. BACKGROUND OF THE INVENTION Multi-mode optical fibers are commonly used in local area optical networks within buildings to transmit high-speed signals. The core diameter of a multimode fiber is larger than that of a single mode fiber and it can transmit more power. The large core diameter also simplifies splicing of fibers and alignment or connection to other networks. Most multimode fibers are tuned for use with traditional light emitting diode (LED) light sources. These light sources have limited modulation capabilities and are therefore able to sustain transmissions of up to 500 MB / S of data. In order to maintain a high rate, such as 1.25GB / S (such as the Gigabit Ethernet standard), the system needs a laser light source. However, for example, Fabry Perot (FP) lasers and vertical cavity surface emitting lasers (VCSELs) are usually hybrid to multimode The optical fiber is less stable, the laser is preferentially higher power, narrower bandwidth, higher modulation rate, and has the ability to combine multiple arrays. Compared with traditional LE1D light sources, lasers (ρρ lasers and VCSELs) produce smaller spot sizes, which are not filled with multimode fibers (that is, not all modes are excited equally). Third, because each mode transmits light slightly differently, it is filled differently. Bandwidth will vary from case to case. The smaller spot size also concentrates energy in the center of the multimode fiber, where the refractive index profile is particularly difficult to control. Small changes in laser and multimode fiber alignment can cause further changes in bandwidth. Although the multi-mode fiber can adjust the laser light source to optimize the bandwidth, the adjustment needs to take care of other systems, and it will make and explain (the) printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Installation costs increase and become _. {When-== Arranged mode fiber network is more reliable bandwidth. According to the present invention, it is sufficient to fill the source output beam of the extended laser light source more uniformly. Multimode fiber maintains bandwidth sensitivity to laser light and vd / non-sensitivity, so that upgraded network devices can use FP lasers and VCSEL light sources to achieve accuracy without trial and error. α The present invention-item embodiment suspects that the modal domain includes how difficult it is to combine. U has a first-end portion that scolds the shooter, the second-end portion is connected to the multi-mode light, and a middle section that connects the two sections. The middle section of the coupler gradually changes between the first and second ends in order to increase the diameter of the single mode or less than the light beam emitted by the laser light source and the end of the county. The diameter of the beam is increased to at least -half and preferably all of the finned fiber. The inner core is surrounded by the inner and outer cladding in the coupler. The core and at least the inner cladding are drawn along the length of the coupler to a smaller cross-sectional size, the reduced size of which will force the beam to propagate beyond the core into the cladding. Maintain sufficient inner cladding at the second end of face 5 | to guide the expanded beam to the required beam diameter. The composite diameter of the core and the inner cladding at the end of the confluence will be connected to the laser light source in a single mode or slightly larger. At the first end, the numerical aperture and beam diameter preferentially match the relevant characteristics of the laser light source. The composite diameter of the core and the inner cladding at the second end of the device will be ~ ~, 1Τ ------ (Please read the precautions on the back and fill in this page) CNS) 8 4 specifications (21〇 > < 297 mm r
2模光纖形成多模連接。在第二端部處數值孔徑以及光 $充伤地射模光纖細特性相匹配以激發多模光纖 主要模S|馬合裔第二端部處光束直徑優先地至少等於多 模光纖心蕊直徑之一半。 雷射光源例如為FP雷射或VCSEL光源能夠藉由將多模 I禺合器第-端部連接至雷射光源，將多模齡器第二端部 連接至多模光纖，以及沿著多_合器長度擴張光束直徑 而_合至乡模錢，使得乡模錢之乡麵更料被光束 均勻地填滿。乡模光纖至少—半至财乡麵優先地被填 滿。光束膨脹藉由逐漸變化多模耦合器達成迫使更多光束 進入外圍内側包層而達成。外側包層將膨脹光束限制於内 側包層内。 位於雷射光源與多模光纖間之多模耦合器形成單模或 些4較大而連接至雷射光源以及多模連接至多模光纖。所 形成光束擴張將減小對多模耦合器與多模光纖間徑向對準 變化之頻寬靈敏性。因而，多模耦合對準精確性能夠與多 模光纖間之|馬合類似。 經濟部中央襟準局員工消費合作社印製 本發明其他特性及優點揭示於下列詳細說明中以及熟 知此技術者能夠由該說明了解或實施本發明詳細說明，申 請專利範圍以及附圖而明瞭。 人們了解先前一般說明以及下列詳細說明僅作為本發 明之範例，以及提供一個架構以了解本發明原理及特性。 附圖在於提供更進一步說明本發明，以及在此加入構成本 發明說明書之一部份。附圖顯示出本發明各種特性以及實 本紙張尺度適用中國國家標準（CNS ) A4規格（210Χ297公釐） 480354 五、發明説明（夺） 施例，以及__書简縣發明 附圖簡單綱： ^ 之斷^圖圖（圖D為多軸合11連接單模光纖至多模光纖 之斷t目（02)^顧合器雜餘統衫模光纖 第三圖（圖3)為比較單模波導與多模光纖間具有以及 不具有多；^合H之對準靈敏性曲線圖。 附圖元件數字符號說明： 多模輕合器10;單模光纖12;多模光纖14;心蕊16， 20’包層18, 22;|馬合器端部24, 26;中間區段28;心蕊 30;内側包層32;外側包層34;多模耗合器4〇;垂直凹腔 表面發射雷射(VCSEL) 42;多模光纖44;耦合器端部46= 48;中間區段50;心蕊52;内側包層54;外側包層56; 心蕊60;包層62。 ’ 詳細說明： 經濟部中央標準局員工消費合作社印製 現在針對本發明優先實施例詳細加以說明，其範例顯 示於附圖中。.本發明多模耦合器之範例性實施例顯示於附 圖中以及以參考數字10表示。 在圖1中多模耦合器10連接單模光纖12至多模光纖14 以提供較為可靠性頻寬以及減小單模與多模光纖12與14間 之對準靈敏性。單模光纖12以及多模光纖14具有傳統心蕊 16, 20以及包層18, 22。多模光纖心蕊20直徑為dMi，其大於 單模光纖心蕊16直徑dsi數倍。不過，單模光纖包層18以及 本紙張尺度適用中賴家鱗（⑽）Μ規2似297公瘦） 480354 A7 B7 6 五、發明説明（穸） 多模光纖包層22之直徑dS2以及dM2約為相同的。 (請先閲讀背面之注意事項再填寫本頁) 多模耦合器10具有第一及第二端部24以及26,其藉由 具有心蕊30之中間區段28連接，並由内側包層32以及外側 包層34圍繞著。耦合器心蕊30在第一端部24處具有初始直 徑dAi與單模光纖12直徑dsl相匹配，但是沿著中間區段28 逐漸變化至較小最終直徑dBi於第二端部26處而相鄰於多 模光纖14。同樣地，耦合器1〇内側包層32初始直徑dA2與單 模光纖12包層直徑ds2相匹配。不過，沿著中間區段28之内 側包層32較小漸變段形成最終直徑dm,其優先地小於多模 光纖心蕊20直徑ck。 心蕊30以及内側包層32優先地由第一端部處24直徑dA1 ，(Ια2減小至第二端部26處直徑dBi, dB2,漸變比例優先地小 於5比1以及通常在2· 5比1附近。漸變段長度（例如為〇. 5公 分）足以保持光線能量由心蕊30絕熱性地過渡進入外圍内 側包層32。 經濟部中央標準局員工消費合作社印製 外側包層34直徑尺寸優先地為1至3毫米，在第一端部 24處包封單模光纖12以及在第二端部26處緊鄰多模光纖14 。許多其他排列亦可能與外側包層34—個或多個功能一致 ，其包含產生結構性支撐以及保護底層30以及32以及限制 光線於内側包層32内。外側包層34逐漸變化優先地類似於 内側包層32以及心蕊30,其主要作為耦合製造之加工物。 例如，耦合器10能夠藉由插入傳統光纖或光纖區段進 入毛細管内達成，其均勻地加熱以及熱塌於光纖四週。對 複合光纖以及管件加熱以及由相反兩端拉引以產生所需要 本紙張尺度適财關家轉(CNS ) A4^m ( 210x1^^7The 2-mode fiber forms a multimode connection. The numerical aperture at the second end is matched with the fine characteristics of the optical fiber in order to excite the main mode S of the multimode fiber. The beam diameter at the second end of the horse is preferably at least equal to half the diameter of the core of the multimode fiber. . The laser light source is, for example, an FP laser or a VCSEL light source. The first end of the multimode I coupler can be connected to the laser light source, the second end of the multimode aging device can be connected to the multimode fiber, and The length of the combiner expands the beam diameter and combines it with the township model money, so that the township model of the township model is evenly filled with the beam. Country-mode fiber is preferentially filled at least—half to wealth. Beam expansion is achieved by gradually changing the multimode coupler to force more beams into the outer inner cladding. The outer cladding limits the expanding beam to the inner cladding. The multi-mode coupler located between the laser light source and the multi-mode optical fiber forms a single-mode or some 4 larger and is connected to the laser light source and the multi-mode is connected to the multi-mode optical fiber. The resulting beam expansion will reduce the bandwidth sensitivity to changes in radial alignment between the multimode coupler and the multimode fiber. Therefore, the accuracy of multimode coupling alignment can be similar to that of multimode fiber. Printed by the Employees' Cooperative of the Central Government Bureau of the Ministry of Economic Affairs, other features and advantages of the present invention are disclosed in the following detailed description, and those skilled in the art can understand or implement the detailed description of the present invention from the description, and the scope of the patent application and the drawings are clear. It is understood that the foregoing general description and the following detailed description are intended as examples of the invention and provide a framework for understanding the principles and features of the invention. The drawings are intended to provide a further explanation of the invention, and are incorporated herein as part of the description of the invention. The drawings show various characteristics of the present invention and the actual paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 × 297 mm) 480354 V. Description of the invention (capture) Examples, and __ Shujian County invention outline of the drawings: ^ Broken ^ Figure (Figure D is a broken multi-axis 11-connected single-mode fiber to multi-mode fiber t head (02) ^ Gu coupler miscellaneous shirt-mode fiber The third figure (Figure 3) is a comparison of single-mode waveguide Alignment sensitivity curve with and without multi-mode fiber; H is shown in the figure. Figures and symbols of the components: Multi-mode light coupler 10; Single-mode fiber 12; Multi-mode fiber 14; Heart core 16, 20 'cladding 18, 22; end of horse coupling 24, 26; middle section 28; core 30; inner cladding 32; outer cladding 34; multimode consumer 40; vertical cavity surface launch Laser (VCSEL) 42; multimode fiber 44; coupler end 46 = 48; middle section 50; core 52; inner cladding 54; outer cladding 56; core 60; cladding 62. '' Detailed description : Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economics Now the detailed description of the preferred embodiment of the present invention will be described in detail. An example is shown in the accompanying drawings. The multimode coupler of the present invention Exemplary embodiments are shown in the drawings and are denoted by reference numeral 10. In FIG. 1, a multimode coupler 10 connects a single-mode fiber 12 to a multi-mode fiber 14 to provide a more reliable bandwidth and reduce single-mode and multi-mode fibers. Alignment sensitivity between 12 and 14. Single-mode fiber 12 and multi-mode fiber 14 have traditional cores 16, 20 and claddings 18, 22. Multi-mode fiber cores 20 have a diameter of dMi, which is larger than single-mode fiber cores 16 diameter dsi several times. However, the single-mode fiber cladding 18 and this paper size are applicable to Lai Jia scale (⑽) M gauge 2 like 297 male thin) 480354 A7 B7 6 V. Description of the invention (穸) Multimode fiber cladding The diameters dS2 and dM2 of 22 are approximately the same. (Please read the precautions on the back before filling out this page) The multimode coupler 10 has first and second ends 24 and 26, which are connected by a middle section 28 with a core 30 and by an inner cladding 32 And the outer cladding 34 surrounds it. The coupler core 30 has an initial diameter dAi at the first end 24 that matches the diameter dsl of the single-mode fiber 12, but gradually changes along the middle section 28 to a smaller final diameter dBi at the second end 26 and Adjacent to the multimode fiber 14. Similarly, the initial diameter dA2 of the inner cladding 32 of the coupler 10 matches the cladding diameter ds2 of the single-mode optical fiber 12. However, the smaller grading section along the inner cladding 32 inside the middle section 28 forms the final diameter dm, which is preferably smaller than the diameter ck of the multimode fiber core 20. The core 30 and the inner cladding 32 are preferentially reduced from a diameter dA1 of 24 at the first end, (α2 to a diameter dBi, dB2 of the second end 26, and the gradient ratio is preferentially less than 5 to 1 and usually at 2.5 Near 1. The length of the gradient segment (for example, 0.5 cm) is sufficient to keep the energy of the light from the core 30 to adiabatic transition into the outer inner cladding 32. The central consumer bureau of the Ministry of Economic Affairs printed the outer cladding 34 diameter size It is preferably 1 to 3 mm, encapsulating the single-mode fiber 12 at the first end 24 and next to the multi-mode fiber 14 at the second end 26. Many other arrangements are also possible with one or more outer claddings 34 Consistent functions, including generating structural support and protecting the bottom layers 30 and 32 and limiting light to the inner cladding 32. The gradual change of the outer cladding 34 is preferentially similar to the inner cladding 32 and the heart core 30, and is mainly manufactured as a coupling For example, the coupler 10 can be achieved by inserting a conventional optical fiber or an optical fiber section into a capillary tube, which uniformly heats and thermally collapses around the optical fiber. The composite optical fiber and tube are heated and pulled from opposite ends This paper suitable scale required financial transfer Kwan (CNS) A4 ^ m generated (210x1 ^^ 7
S A7 -------—____B7五、發明説明（6 ) 經濟部中央標準局員工消費合作社印製 漸變段2及在漸變段相區段麟喊生-軸合器。 、輕合器10心蕊30以及内侧包層32能夠藉由傳統光纖製 仏出外側包層34能觸由毛細管形成。管件優先地由摻 雜石朋或氟摻雜劑之石夕石構成以降低折射率至少為内側包層 32折射率。外側包層34折射率優先地低於内側包層％折射 率以導引光線沿著内側包層32傳播。 獨用途類似叙合器說明於本公司美國第4763976號 Connector Employing Mode Field Modification”。該專利之說明在此加入作為參考。 另外一種多模耦合器40顯示於圖2中，其耦合垂直凹腔 表面發射雷射(VCSEL)42至多模光纖44。能夠使用其他雷 射或其他光源，但是本發明特別有益使用於％3此或1；?雷射 ，其輸出點尺寸較小。類似於耦合器1〇，耦合器4〇包含第一 及第二端部46及48,其藉由中間區段5〇連接，其心蕊52由内 侧包層54以及外側包層56圍繞著。第一端部相鄰耦合至雷 射42,以及第二端部48同樣地耦合至多模光纖44。 心蕊52以及内側包層54由第一端部46至第二端部逐漸 變化，類似於先前之實施例。外側包層56同樣地顯示為逐 漸變化，但是其他包含並無漸變段之縱向變化為可能的。 多模光纖44具有一般尺寸之心蕊6〇以及包層62而配合耦合 器40尺寸以改善與雷射42耦合之可靠性。 耦合器10以及40特別尺寸主要由下列規格決定出（a) 填滿由多模光纖14以及44之傳送模，（b)減小耦合器1〇與40 及多模光纖14與44間對準變化之靈敏性，以及(c)限制光源 本、，氏張尺度適用中國國家標準（CNS ) A4規格 (210X29 7公釐） ----------1鬌衣-- (請先閱讀背面之注意事項再填寫本頁) 、tr i# 480354 A7 _______B7 五、發明説明（// ) 12與42以及多模光纖14與44間之傳送損耗。漸變心蕊3〇以 及52迫使由心蕊30與52發出光線進入内侧包層32與54外圍 部份。由苐一端部24, 46至第二端部26, 48經由|馬合器1〇與 40傳輸之光束直徑將增加。 優先地，由耦合器10與40擴大之光束直徑至少等於多 模光纖心淡20及60直徑dMi—半但是小於心蕊2〇與6〇全部 直徑dm。假如光束直徑擴張太大，傳播通過多模光纖心蕊 20與60之光線將溢失。假如光束直徑擴張太小，光線並不 激發多模光纖14與44充份之模以提供可靠性之性能。雖然 ，直徑由dA2連續性地減小至如，内側包層32及54優先地保 持充份尺寸以導引擴大點大小之光束通過耦合器1〇與4〇之 中間區段28以及50。 在辆合器10與40第一端部處24及46處心蕊30與52以及 内側包層直徑dA1以及I大小將與光源形成單模或些微較 大之連接，其優先地經由例如光纖丨2之單模光纖中間物或 直接地與例如雷射42之光源連接。在第一端部處24與46處 數值孔徑以及點尺寸直徑優先地與光源相關特性相匹配。 一些光源例如為850nm VCSEL以及1300nm FP雷射光源產生 經濟部中央標準局員工消費合作社印製 輸出光束些微地大於單模光纖之心蕊。因而心蕊3〇與52之 直徑‘與1能夠形成些微地大於傳統單模尺寸以更完全 地使雷射光源之輸出耦合至多模耦合器1〇與4〇。 在耦合器10與40端部26與48處心蕊30與52以及内側包 層32與54之直徑dm與如大小將與多模光纖14與44形成多 模連接。在第二端部26與48處數值孔徑與點大小優先地與S A7 --------- ____ B7 V. Description of the invention (6) Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, the gradual section 2 and the Lin-shaft coupler in the gradual section phase section. The core 30 and the inner cladding 32 of the light coupler 10 can be formed by the conventional optical fiber, and the outer cladding 34 can be formed by touching the capillary tube. The tube is preferably composed of stone spar doped with zeolite or fluorine dopant to reduce the refractive index to at least the refractive index of the inner cladding 32. The outer cladding layer 34 has a refractive index lower than the inner cladding% refractive index to guide light to propagate along the inner cladding 32. The single-purpose similar coupler is described in our company's United States No. 4763976 Connector Employing Mode Field Modification. The description of this patent is incorporated herein by reference. Another multi-mode coupler 40 is shown in FIG. 2 and is coupled to the surface of the vertical cavity. Emission laser (VCSEL) 42 to multimode fiber 44. Other lasers or other light sources can be used, but the present invention is particularly useful for% 3 or 1; lasers, whose output point size is smaller. Similar to coupler 1 〇, the coupler 40 includes first and second ends 46 and 48, which are connected by the middle section 50, and the core 52 is surrounded by the inner cladding 54 and the outer cladding 56. The first end portion is The adjacent coupling to the laser 42 and the second end portion 48 are similarly coupled to the multimode fiber 44. The core 52 and the inner cladding 54 are gradually changed from the first end portion 46 to the second end portion, similar to the previous embodiment. The outer cladding 56 is similarly shown to be gradually changing, but other longitudinal changes including no gradation are possible. The multimode fiber 44 has a core 60 of a general size and a cladding 62 to match the size of the coupler 40 to improve the Laser 42 coupling Reliability. The special sizes of couplers 10 and 40 are mainly determined by the following specifications: (a) Filling the transmission mode by multimode fiber 14 and 44; (b) Reducing couplers 10 and 40 and multimode fiber 14 and 44 Sensitivity of changes in alignment, and (c) Limitation of light source size, and the Zhang scale is applicable to the Chinese National Standard (CNS) A4 specification (210X29 7 mm) ---------- 1 (Please read the precautions on the back before filling this page), tr i # 480354 A7 _______B7 V. Description of the invention (//) Transmission loss between 12 and 42 and multimode fiber 14 and 44. Graduated cores 30 and 52 Force the light from the cores 30 and 52 to enter the outer parts of the inner claddings 32 and 54. The diameter of the beam transmitted from the one end portion 24, 46 to the second end portion 26, 48 via the horse coupling 10 and 40 will increase Preferentially, the diameter of the beam expanded by the couplers 10 and 40 is at least equal to the diameter of the multimode fiber 20 and 60 dMi—half but less than the total diameter dm of the core 20 and 60. If the beam diameter expands too much, it propagates through Multimode fiber cores 20 and 60 will lose light. If the beam diameter is too small, the light does not excite the multimode light. 14 and 44 are sufficient to provide reliable performance. Although the diameter is continuously reduced from dA2 to, for example, the inner claddings 32 and 54 preferentially maintain sufficient size to guide the beam of enlarged spot size through the coupler The middle sections 28 and 50 of 10 and 40. At the first ends of the couplers 10 and 40, the cores 30 and 52 and the inner cladding diameters dA1 and I will form a single-mode or For slightly larger connections, it is preferably connected via a single-mode fiber intermediate such as fiber 2 or directly to a light source such as laser 42. The numerical apertures and dot size diameters at the first ends at 24 and 46 preferentially match the characteristics of the light source. Some light sources, such as 850nm VCSEL and 1300nm FP laser light sources, are produced by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. The output beam is slightly larger than the core of a single-mode fiber. Therefore, the diameters of the cores 30 and 52 ′ and 1 can be formed slightly larger than the conventional single-mode size to more completely couple the output of the laser light source to the multi-mode couplers 10 and 40. The diameters dm of the cores 30 and 52 and the inner claddings 32 and 54 at the ends 26 and 48 of the couplers 10 and 40 will form a multi-mode connection with the multi-mode optical fibers 14 and 44. The numerical aperture and dot size at the second ends 26 and 48 preferentially differ from
、發明説明（g) 經濟部中央標準局員工消費合作社印製 ^莫光纖1慎44德嶋性她配 多個模之大雜_全部。 >喊纖14與44 於圖3由中多 了曰版出頻免為早核波導與多模光纖間徑向位置 ^函數。表示為菱形數據點之曲_顯示出單 二接連接之靈敏性。在完全對準位置處雖然 =取初為相* &小於m料對準將使頻寬減小_。 不對準將回復為最初頻寬。包含在單模波導盘 ^果光纖間作試誤法以達到所需要之對準將增 費 用，或區域光學網路組件之不確定性。 ，買 表不為方形輯點之曲線圖7 2顯示出所職更一致性 其藉由一個本發明多_合器10或40中間物將單模波 =口至相同的多;^光纖。藉由數值範例，在數值孔徑約 Μ =至0· 14時由叙合器發出之光束尺寸具有(_)直徑 、，、勺為30至35微米。雖然最初14微米之徑向不對準，頻寬保 持為相當ϋ定。由於轉合作題夠例行地達成某—誤差内 ’力=夕模_合a 1 〇或術㈣達成單模波導與多模光纖間 可靠性之耦合.，其可保持預期之頻寬。 ，合為、10與40優先地按裝於雷射包裝外殼中，其能夠 經由單模光纖尾瓣直接地連接至雷射(例如為耗合器4〇)或 間接地至雷射(例如為I禺合器1〇)。多模光纖14或44能夠在 後面裝置過程中連接至輕合器10或40,或有限長度之多模 光纖14或條細先連接為跨麟纜使得只有傳統鄰接麵 合需要增加額外的長度。Description of the invention (g) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs ^ Mo Fiber 1 Shen 44 Virtuousness She has multiple models with all kinds of _ all. > The outgoing fibers 14 and 44 are shown in Figure 3 as a function of the radial position between the early-core waveguide and the multimode fiber. Expressed as diamond-shaped data points, it shows the sensitivity of a single two-link connection. At the position of complete alignment, although the initial phase is taken * & less than m material alignment will reduce the bandwidth _. Misalignment will revert to the original bandwidth. Containing trial and error methods between single-mode waveguide disks and optical fibers to achieve the required alignment will increase the cost or uncertainty of the regional optical network components. The purchase table is not a square-shaped curve. Figure 7 2 shows that the position is more consistent. It uses a 10- or 40-intermediate of the multiplexer of the present invention to convert the single-mode wave to the same number; ^ fiber. With the numerical example, the beam size emitted by the coupling device when the numerical aperture is about M = to 0.14 has a diameter (_), and the spoon is 30 to 35 microns. Despite the initial 14 micron radial misalignment, the bandwidth remains fairly constant. Since the transfer problem is routine enough to achieve a certain-in-error force = evening mode_combination a 1 〇 or operation to achieve reliability coupling between a single-mode waveguide and a multi-mode fiber, it can maintain the expected bandwidth. , Together, 10 and 40 are preferentially installed in the laser packaging shell, which can be directly connected to the laser (for example, the coupler 40) or indirectly to the laser (for example, for the I coupler 10). The multimode fiber 14 or 44 can be connected to the light coupler 10 or 40 during the subsequent installation process, or the multimode fiber 14 or strip of limited length is first connected as a cross-link cable so that only the traditional abutment surface needs to add additional length.
本紙張尺度適财格（2igx297公餐）_ (I (請先閱讀背面之注意事項再填寫本頁)This paper is a suitable financial standard (2igx297 meal) _ (I (Please read the precautions on the back before filling this page)
、1T 加 480354 A7 B7 五、發明说明（7 ) 先前所說明本發明之詳細範例揭示出本發明優先地實 施例。不過，熟知此技術者能夠由本發明所揭示内容 、 種形式實施。例如，本發明能夠實施為平面波導步 各 形成波導為層狀而非同心圓環帶。 ^式，其中 熟知此技術者能夠對本發明作出各種變化 是其並不會脫離本發明精神以及範圍内。這些變改變，隹 均含蓋於下列申請專利範圍内。 〜欠化及改變 經濟部中央標準局員工消費合作社印製 適 尺 :張 紙 準 榡 家 A4 釐 公 29771T plus 480354 A7 B7 V. Description of the invention (7) The detailed examples of the present invention previously explained reveal the preferred embodiments of the present invention. However, those skilled in the art can implement the disclosed contents in various forms. For example, the present invention can be implemented as a planar waveguide step, and each waveguide is formed into a layered shape instead of a concentric annular band. It is understood that those skilled in the art can make various changes to the present invention without departing from the spirit and scope of the present invention. These changes are covered by the following patent applications. ~ Unification and change Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs