1234020 玖、發明說明： 【發明所屬之技術領域】 本發明關於光信號收發裝置，並關於能實現零件、組裝 工具的共用化且可廉價製造的光信號收發裝置。 【先前技術】 以光纖1 2連接設於光通信的終端的2個光模組2〇間，於長 距離間高速地傳輸大資料量的信號時，㈣組糊構成係 如圖3。在該例中，各光模組2〇向光纖12射入從作爲發光元 件的雷射二極體11發出的第1波長（從一方發出λ =1310 nm 另方务出人—1550 nm)光，同時以作爲受光元件的光電 一極體1 3接收從光纖丨2射出的其他波長（從一方發出入 = 1 550 nm，另一方發出；1 =131〇 疆）。 並且’此種光信號收發裝置包括：靠近雷射二極體丨丨而 δ又置的第1準直透鏡（c〇iHmati〇I1ienS)21、靠近光纖12而設 置的第2準直透鏡22、以及靠近光電二極體13而設置的第3 準直透鏡23，在第1與第2準直透鏡21、22之間相對於光軸 傾斜45度配置有濾光器24。 根據此種光信號收發裝置，從雷射二極體丨丨的發光元件 15放射出的第1波長λ 1的光，會藉由第1準直透鏡21成爲平 行光線，並透過濾光器24而由第2準直透鏡22聚光射入光纖 1 2中。 並且，從光纖12射出的第2波長λ2的光，藉由準直透鏡 22成爲平行光線，為濾光器24所反射，通過第3準直透鏡23 聚光而射入光電二極體13的受光元件14中。 84737 1234020 置中，採用了3個準直 元件數量多。並且， 必須改變每個元件的 組裝調整費事，且成 可是，在上述從前的光信號收發裝 透鏡即重疊多層膜而構成的濾光器， 每個元件係專用於傳輪光的波長者， 配置位置’使得元件種類多。因此， 本增大。 【發明内容】 本發明的目的在提供能儘量減少光學元件數量，且在第工 及第2光模組中使用多個通用元件，降低製造成本的光信號 收發裝置。 在本發明中 收發裝置。 爲了解決上述問題而構成了如下的光信號 本發明中的光信號收發裝置，係以光纖連接第Μ模組與 第2光模組，在兩光元件之間進行光信號的收發；第丨光模 組包括：發射第1波長U丨）光的第丨發光元件；接收來自光 纖的第2波長（又2)光的第i受光元件；向光纖聚集上述第工 波長光並向上述第1受光元件聚集上述第2波長光的光學構 件；向光纖側射出上述第丨波長的直進光，並向上述第1受 光兀件側射出來自光纖的第2波長繞射光的第丨繞射光栅； 第2光模組包括··發射第2波長光的第2發光元件；接收來自 光纖的第1波長光的第2受光元件；向光纖聚集上述第2波長 光亚傳導上述第1波長光的光學構件；向光纖側射出上述第 2波長光的直進光，且向上述第2受光元件側射出來自光纖 的第1波長光的繞射光的第2繞射光柵；上述第丨繞射光柵的 間距爲P 1，第2繞射光柵的間距P2爲pq X (入丨/入2)。 84737 1234020 根據上述發明，可減少準直透鏡的數量，且由於可使通 過配置於第1光模組的第丨繞射光柵的第2波長（λ 2)光的繞 射角，與通過配置於第2光模組的第2繞射光栅的第丨波2 (JW)光的繞射角相等，所以可在兩個元件中共同使用構成1234020 (1) Description of the invention: [Technical field to which the invention belongs] The present invention relates to an optical signal transceiving device, and also relates to an optical signal transceiving device capable of sharing parts and assembly tools and being inexpensively manufactured. [Prior Art] When two optical modules 20 installed at the terminal of optical communication are connected by optical fiber 12 and a large data signal is transmitted at a high speed over a long distance, the structure of the group paste is shown in FIG. 3. In this example, each optical module 20 emits light of the first wavelength emitted from the laser diode 11 as a light emitting element (emission of λ = 1310 nm from one side and emission of 1550 nm from the other side) to the optical fiber 12. At the same time, the photodiode 1 3 as a light receiving element receives other wavelengths emitted from the optical fiber 丨 2 (emission from one side = 1 550 nm, and the other side emits; 1 = 1310). And 'this optical signal transmitting and receiving device includes: a first collimator lens (c〇Hmati〇I1ienS) 21, which is located near the laser diode, δ, and a second collimator lens 22, which is located near the optical fiber 12, A third collimator lens 23 provided near the photodiode 13 is provided with a filter 24 disposed between the first and second collimator lenses 21 and 22 at an angle of 45 degrees with respect to the optical axis. According to such an optical signal transmitting and receiving device, the light of the first wavelength λ 1 emitted from the light emitting element 15 of the laser diode 丨 becomes parallel light through the first collimating lens 21 and passes through the filter 24. The second collimating lens 22 focuses the light and enters the optical fiber 12. In addition, the light of the second wavelength λ2 emitted from the optical fiber 12 is collimated by the collimator lens 22, is reflected by the filter 24, and is collected by the third collimator lens 23 to be incident on the photodiode 13. Light receiving element 14. 84737 1234020 In the center, a large number of 3 collimation elements are used. Moreover, it is necessary to change the assembly and adjustment of each element, and it is a problem. However, in the aforementioned optical signal transmitting and receiving lens, that is, a filter formed by overlapping a multilayer film, each element is dedicated to transmitting the wavelength of light. Placement position 'allows for many types of components. Therefore, the cost is increased. SUMMARY OF THE INVENTION An object of the present invention is to provide an optical signal transceiving device capable of reducing the number of optical elements as much as possible, and using a plurality of general-purpose elements in the first and second optical modules to reduce manufacturing costs. The transmitting and receiving device in the present invention. In order to solve the above problems, the following optical signals are constituted: The optical signal transmitting and receiving device in the present invention connects the M module and the second optical module with optical fibers, and transmits and receives optical signals between the two optical elements. The module includes: a first light emitting element that emits light of a first wavelength U 丨); an ith light receiving element that receives light of a second wavelength (another 2) from an optical fiber; collects the first wavelength light at the optical fiber and receives the first light at the first wavelength The element collects the optical member of the second wavelength light; emits the straight-forward light of the second wavelength to the optical fiber side, and emits the second diffraction grating of the second wavelength diffracted light from the optical fiber to the first light receiving element side; the second The optical module includes a second light-emitting element that emits light of a second wavelength; a second light-receiving element that receives light of a first wavelength from an optical fiber; an optical member that collects the second-wavelength light and transmits the first-wavelength light to the optical fiber; A second diffraction grating that emits the straight-forward light of the second wavelength light toward the optical fiber side and emits the diffraction light of the first wavelength light from the optical fiber toward the second light receiving element side; the pitch of the first diffraction grating is P 1 , 2nd diffracted light Pitch P2 is pq X (the Shu / income 2). 84737 1234020 According to the above invention, the number of collimating lenses can be reduced, and the diffraction angle of the second wavelength (λ 2) light passing through the first diffraction grating of the first optical module and the passing angle of The second diffraction angle of the second diffraction grating of the second light module is equal to the diffraction angle of the second wave (JW) of the light, so it can be used together in two components.
第1及第2光模組的殼體和其他構件，且可使用於組裝調整 的工具可以共用。 I 亚且，本發明的光信號收發裝置中，各模組中的光學構 件係由將來自各發光元件的光經繞射光栅聚集到光纖端面 ，且將來自光纖的光經繞射光柵聚集到各受光元件的凸透 鏡構成。 根據上述光學構件由凸透鏡構成的光信號收發裝置，則 :用最少的光學元件向光纖收集來自發光元件的光，並向 堂光元件收集來自光纖的光。 卜本t明的光彳5號收發裝置，繞射光柵與上述光學 構件的一個面形成一體。 由於本發明使上述繞射光柵與光學構件的-個面形成一 體’'可用模成型加工法製作光學構件和繞射光柵，因而可 ，乂加工里’並且’光學構件和繞射光栅無須組裝，可節 省組裝工時，免去兩構件之間的位置調整。 【實施方式】 以下，根據圖式說明本發明的實施方式。圖丨及圖2係表 不關於本發明之光信號收發裝置之實施方式的各光模組30 、60的示意圖。 構成本實施例的光信號收發裝置的光模組、•係以 84737 1234020 單一杈式之光纖12將圖i所示的第i光模組3〇及圖2所示的 第2光模組60的裝置結合而形成。 第1光杈組30如圖1所示，由光學地連接於單一模式中所 使用之光纖12的光學元件4〇及收發元件5〇所構成。 .收發兀件50係於基板51上，將發出第丨波長（本例中入 =1310 nm)雷射光的發光元件的雷射二極體（LD) 52，與高 效率地接收第2波長（本例中λ2=155〇 nm)光的光電二極體 (PD)53隔著間隔d而配置，且與光學元件⑽隔著光軸距離d 而配置。圖1中符號54表示遮斷射出光及入射光中不必要光 的濾光器。 光學兀件40具備在基板43的光纖1 2側突起而形成的非球 面凸透鏡面41。該光學元件4〇還具備光柵面42，該光柵面 42在基板43的收發元件側側面向光纖12射入來自上述雷射 二極體52的第1波長（本例中；l=131〇nm)光，同時向作為受 光元件的光電二極體53射入從光纖12射出的第2波長（本例 中又=1 5 5 0 nm)的光。 該光柵面42之光栅間距P1係以下列條件來進行選擇·· ① 以1310nm之光作爲〇次透過光而使之高效率地透過； ② 以1 550 nm之光作爲1次繞射光而使之高效率地透過， 例如選擇P 1 = 2 0 μ m。 藉此可滿足上述條件。 並且，凸透鏡面及光柵面可根據需要而選擇其特性，且 可選擇其形狀。 第2光模組如圖2所示，使用於單一模式，由光學地連接 84737 1234020 光學元件7 〇、及收發元件 於與第1光模組30連接的光纖12的 8〇所構成。 收發元件8 0係於基板8 1上，將發出筮〗 — 攸 卞心出第1波長（本例中λ — 1 550 nm)雷射的發光元件雷射二極體（ld) μ、及高效率 地接收第2波長（本例中入2=131〇 尤的先電二極體（pD) 83隔著距離d(圖2,與第丄光模組爲同—尺寸）而配置，且與 光學元件70隔著光軸距離D(圖2’與第】光模組爲同一尺寸) 而配置。圖2中符號84表示遮斷射出光及入射光中不必要光 的渡光器。 光學元件70包括在光纖12側突起所形成的非球面凸透鏡 面8卜並且該光學元件7〇還包括光栅面42，該光柵面42在 基板73的收發元件側側面向光纖12射入來自上述雷射二極 體82的第1波長（本例中A=131〇nm)的光，同時向作為受光 元件的光電二極體83射入從光纖12射出的第2波長（本例中 λ =1 550 nm)的光。 該光柵面42之光栅間距P1係以下列條件來進行選擇： ① 以155〇nm光作爲〇次透過光而使之高效率地透過； ② 以131〇nm光作爲丨次繞射光而使之高效率地透過； 例如選擇？2 = ?1(13 1〇/15 5〇)与17 0111。 藉由如此的選擇，凸透鏡面及光柵面可根據需要而選擇 其特性，並可選擇其形狀。且可以與第丨光模組相同尺寸加 以製作。 σ 以上係本發明的實施方式說明，但本發明不限於上述實 例，可在不超越其主旨的範圍内進行變更。 、 84737 1234020 【發明效果】 如以上况明，根據本發明的光信號收發裝置，可獲得以 下優良效果。 根據本發明，可減少準直透鏡的數量，而且，可使配置 於第1光杈組上的第1繞射光柵所造成的第2波長（又2)光的 繞射角，與配置於第2光模組上的第2繞射光柵所造成的第i 波長(λ 1)光的繞射角相等，所以可使構成第}及第2光模組 的殼體或其他構件在兩模組間通用，並且，可共同使用組 裝調整的工具。 》 此外’根據光學構件由凸透鏡構成的光信號收發裝置， 可以最少的光學元件將來自發光元件的光收集於光纖之中 ，並將來自光纖的光收集於受光元件中。 此外，本發明使繞射光柵-體地形成於光學構件的一個 面上’故可以模成型而以-次加工形成光學構件及繞射光 栅’因而可減少加工量，並且，光學 尤干構件和繞射光栅&須 組裝，故可節省組裝之工時，免去兩構件 …、、 傅1干之間的位置調整。 【圖式簡單說明】 圖 圖1係表示本發明光信號收發裝 圖2係表示本發明光信號收發裝 置—側之光模組構成圖。 置另側之光模組構成 圖3係表示先前的光信號收發裝置的圖。 【圖式代表符號說明】 1 雷射二極體 2 光纖 84737 -10-The housings and other components of the first and second optical modules can be shared by tools used for assembly and adjustment. I. Moreover, in the optical signal transceiving device of the present invention, the optical components in each module are formed by focusing the light from each light-emitting element through a diffraction grating onto the end face of the optical fiber, and condensing the light from the optical fiber through the diffraction grating to Each of the light receiving elements is configured by a convex lens. According to the optical signal transceiving device in which the optical member is composed of a convex lens, the light from the light emitting element is collected from the optical fiber with a minimum of optical elements, and the light from the optical fiber is collected from the optical element. In the optical transmission and reception device No. 5 of the optical fiber, the diffraction grating is integrated with one surface of the optical member. Because the present invention integrates the above-mentioned diffraction grating with one surface of the optical member, `` the optical member and the diffraction grating can be made by a molding process, so that the optical member and the diffraction grating need not be assembled in processing, It can save assembly man-hours and eliminate position adjustment between two components. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 丨 and FIG. 2 are schematic diagrams showing the optical modules 30 and 60 of the embodiment of the optical signal transceiving device of the present invention. The optical module constituting the optical signal transceiving device of this embodiment is a single branch optical fiber 12 with 84737 1234020. The i-th optical module 30 shown in FIG. I and the second optical module 60 shown in FIG. 2 are used. Combined with the device. As shown in FIG. 1, the first optical branch group 30 is composed of an optical element 40 and a transmitting / receiving element 50 which are optically connected to the optical fiber 12 used in a single mode. The transceiver element 50 is mounted on the substrate 51, and a laser diode (LD) 52 of a light emitting element that emits laser light of the first wavelength (in this case, = 1310 nm), and efficiently receives the second wavelength ( In this example, a photodiode (PD) 53 of λ2 = 155 nm) light is arranged with an interval d, and it is arranged with an optical element ⑽ with an optical axis distance d. Reference numeral 54 in Fig. 1 denotes an optical filter that blocks unnecessary light from emitted light and incident light. The optical element 40 includes an aspherical convex lens surface 41 formed by protruding on the optical fiber 12 side of the substrate 43. The optical element 40 further includes a grating surface 42 that projects the first wavelength from the above-mentioned laser diode 52 toward the optical fiber 12 on the transmitting-receiving element side surface of the substrate 43 (in this example, l = 1310 nm). ) Light, and at the same time, the light having a second wavelength (in this example, = 1550 nm) emitted from the optical fiber 12 is incident on the photodiode 53 as a light receiving element. The grating pitch P1 of the grating surface 42 is selected according to the following conditions. ① Use 1310 nm light as the 0th transmitted light to transmit it efficiently; ② Use 1 550 nm light as the first diffraction light to make it. For efficient transmission, select P 1 = 20 μm, for example. This can satisfy the above conditions. Moreover, the characteristics of the convex lens surface and the grating surface can be selected as required, and the shape can be selected. As shown in FIG. 2, the second optical module is used in a single mode and is configured by optically connecting 84737 1234020 optical element 70 and transmitting and receiving elements 80 to optical fiber 12 connected to the first optical module 30. The transceiving element 80 is mounted on the substrate 81 and will emit 筮 — — you will be aware of the light emitting element laser diode (ld) μ, which is the first wavelength of the first wavelength (λ-1 550 nm in this example), and high Efficiently receive the second wavelength (in this example, 2 = 131〇 the pre-electric diode (pD) 83 is arranged at a distance d (Figure 2, the same size as the third optical module), and The optical element 70 is arranged across the optical axis distance D (the same size as that of the first optical module in FIG. 2). The reference numeral 84 in FIG. 2 indicates a light crossing device that blocks unnecessary light from the incident light and the incident light. 70 includes an aspherical convex lens surface 8 formed on the side of the optical fiber 12 and the optical element 70 further includes a grating surface 42 which is incident on the optical fiber 12 from the transmitting and receiving element side surface of the substrate 73 from the above laser 2 Light of the first wavelength of the polar body 82 (A = 1310 nm in this example) is simultaneously incident on the photodiode 83 as a light receiving element and the second wavelength of the optical fiber 12 is emitted (λ = 1 550 nm in this example). ). The grating pitch P1 of the grating surface 42 is selected under the following conditions: ① Use 1550nm light as the 0th transmitted light to make it highly efficient. ② Use 1310nm light as the first-order diffracted light to make it transmit efficiently; for example, choose 2 =? 1 (13 1〇 / 15 50) and 17 0111. With this choice, the convex lens surface and The grating surface can be selected according to its needs and its shape can be selected. And it can be made with the same size as the first optical module. Σ The above is the description of the embodiment of the present invention, but the present invention is not limited to the above examples, Changes are made beyond the scope of the gist. 84737 1234020 [Effects of the Invention] As described above, the optical signal transceiving device of the present invention can achieve the following excellent effects. According to the present invention, the number of collimating lenses can be reduced, and, The diffraction angle of the second wavelength (and 2) light caused by the first diffraction grating disposed on the first optical group and the diffraction angle caused by the second diffraction grating disposed on the second optical module can be made. The diffraction angles of the i-th wavelength (λ 1) light are equal, so that the housing or other components constituting the second and second optical modules can be shared between the two modules, and tools for assembly and adjustment can be used together. Also 'based on optical components by convex lenses The completed optical signal transceiving device can collect the light from the light emitting element into the optical fiber and the light from the optical fiber into the light receiving element with the least optical element. In addition, the present invention enables the diffraction grating to be integrally formed in the optical One side of the component 'so it can be molded to form an optical component and a diffraction grating in one pass', thereby reducing the amount of processing, and the optically dry component and the diffraction grating & must be assembled, so assembly work can be saved. At this time, the position adjustment between the two components is omitted. [Brief description of the figure] Figure 1 shows the optical signal transceiver of the present invention. Figure 2 shows the optical signal transceiver of the present invention—the optical mode on the side. Composition chart. Optical module configuration on the other side Fig. 3 is a diagram showing a conventional optical signal transmitting and receiving device. [Schematic representation of symbols] 1 Laser diode 2 Optical fiber 84737 -10-