TWI616695B - 多通道並行光接收器件 - Google Patents

多通道並行光接收器件 Download PDF

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TWI616695B
TWI616695B TW105135616A TW105135616A TWI616695B TW I616695 B TWI616695 B TW I616695B TW 105135616 A TW105135616 A TW 105135616A TW 105135616 A TW105135616 A TW 105135616A TW I616695 B TWI616695 B TW I616695B
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light receiving
arrayed waveguide
optical
photodiodes
receiving device
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TW201741709A (zh
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羅建洪
蔣棟彪
聶鵬
丁曉亮
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寧波環球廣電科技有限公司
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4249Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4274Electrical aspects
    • G02B6/428Electrical aspects containing printed circuit boards [PCB]
    • G02B6/4281Electrical aspects containing printed circuit boards [PCB] the printed circuit boards being flexible
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/12007Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
    • G02B6/12009Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides
    • G02B6/12019Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides characterised by the optical interconnection to or from the AWG devices, e.g. integration or coupling with lasers or photodiodes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/32Optical coupling means having lens focusing means positioned between opposed fibre ends
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4206Optical features
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4215Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4292Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4295Coupling light guides with opto-electronic elements coupling with semiconductor devices activated by light through the light guide, e.g. thyristors, phototransistors
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4256Details of housings
    • G02B6/426Details of housings mounting, engaging or coupling of the package to a board, a frame or a panel
    • G02B6/4261Packages with mounting structures to be pluggable or detachable, e.g. having latches or rails

Abstract

一種多通道並行光接收器件,包括載板,其一端的正面上設有多個光電二極管,及光接收晶片,多個光電二極管與光接收晶片電連接,載板的另一端設有光纖連接器,載板的正面上方設有陣列波導光栅,其入射端與光纖連接器連接,以接收光纖上的光信號,並在陣列波導光栅中將光信號按波長分成並列設置的多路光信號,陣列波導光栅的出射端的端面設有角度使多路光信號通過端面反射到陣列設置的多個光電二極管的感光面上。採用上述結構,省去陣列波導光栅和光電二極管間的耦合,光電二極管可和光接收晶片設在同一平面上,節省連接線的結構及長度。

Description

多通道並行光接收器件
本發明涉及光纖通信技術領域,具體講是一種多通道並行光接收器件。
光接收器件是指用於光通信中的接收光纖中的光信號並將光信號轉換為電信號的器件,隨著現在市場的需求增加,對產品的成本和性能要求也越來越高。目前在光通信,資料中心的光模組中,由於受限於產品的應用空間,因此,為了提供產品的密度和容量,就必須提高產品的單通道的速率,以及增加產品的通道數目,因此,很多情況下,需要在光模組中做多路並行的設計方案。那麼光模組之間需要通過光纖來傳輸,而且光模組之間是採用跳線來對接的,這樣成本會比較高。
本發明要解決的技術問題是,克服現有技術的缺陷,提供一種能夠實現多路接收並傳輸,而且可靠性高,成本較低的多通道並行光接收器件。
為解決上述技術問題,本發明提供一種多通道並行光接收器件,它包括一載板,載板的一端的正面上設有陣列設置的多個光電二極體,以及一光接收晶片,多個光電二極體與光接收晶片電連接,載板的另一端設有光纖連接器,載板的正面上方還設有陣列波導光柵,陣列波導光柵的入射端與光纖連接器連接,用於接收光纖上的光信號,並在陣列波導光柵中將光信號按波長分成並列設置的多路光信號,陣列波導光柵的出射端的端面設有角度使得多路光信號通過端面反射到陣列設置的多個光電二極體的感光面上。
採用上述結構後,本發明具有以下優點:本發明通過將陣列波導光柵的端面研磨出一個角度,使得陣列波導光柵中出射的光信號通過端面的反射可以反射到光電二極體的感光面上,這樣在設計時在光電二極體的位置已經確定好之後,只需要在載板上做出陣列波導光柵的放置槽或導向結構來確定陣列波導光柵的位置即可,安裝簡單方便,省去了陣列波導光柵和光電二極體之間的耦合,而且光電二極體可以和光接收晶片設在同一平面上,節省了連接線的結構以及長度,穩定非常高,製造成本也較低。
該多個光電二極體設置在同一線路板上。採用這種結構,可以確定不同光電二極體之間的位置,以及在製造時簡單方便。
該光電二極體的數量與陣列波導光柵中分出的光路的數量相同。
該陣列波導光柵的出射端的端面的研磨角度為41~46 度。
該陣列波導光柵的出射端的端面的研磨角度為42 度。
該陣列波導光柵的入射端與光纖連接器之間設有用於耦合光纖的第一透鏡。採用這種結構在光纖連接器和陣列波導光柵中設置第一透鏡來進行耦合。
該陣列波導光柵的入射端直接插接在光纖連接器上,該光纖連接器與陣列波導光柵連接的一端內置了一漸變折射率透鏡。採用這種結構,減少了一次耦合次數,能夠提高產品的穩定性。
下面結合附圖和具體實施方式對本發明做進一步詳細的說明:
如圖1-圖6 所示,本發明提供一種多通道並行光接收器件,它包括一載板8,載板8的一端的正面上設有陣列設置的多個光電二極體3,以及一光接收晶片2,多個光電二極體3與光接收晶片2 電連接,本實施例中該光接收晶片2 為跨阻放大器TIA 晶片,光電二極體與跨阻放大器TIA 晶片通過金線連接,載板8 的另一端設有光纖連接器4,載板8 的正面上方還設有陣列波導光柵6,陣列波導光柵6 的入射端61 與光纖連接器4 連接,用於接收光纖上的光信號,並在陣列波導光柵6 中將光信號按波長分成並列設置的多路光信號,陣列波導光柵6的出射端62的端面63設有角度使得多路光信號通過端面63反射到陣列設置的多個光電二極體3 的感光面上。
當然本實施例中光接收器件還包括下殼1 和上蓋7,將上述結構裝在殼體內用於保護上述結構,但這種殼體結構並非是本發明的保護點,並且設置其他類型的殼體均可以。光接收晶片2 還通過金線連接一柔性線路板9,柔性線路板9 用於和光站中的其他器件連接。該陣列波導光柵6有入射端61和出射端62光信號從入射端61進入,由於本發明中光纖所用的為波分複用技術,即在光信號中包含有不同波長的信號,因此在陣列波導光柵6中將不同波長的信號分成多路光信號在出射端62輸出。該陣列波導光柵6為現有技術,其採用多個可以過濾不同波長的光學濾波片使得每一路都僅通過所設定波長範圍內的光信號,這樣就可以將光纖中的光信號進行分波輸出。本發明中由於端面63 為斜面,因此光信號在端面63 處會進行反射,通過設置特定的角度使得反射的光信號能夠照射到載板8上的不同的多個光電二極體3的感光面上,一般情況下,陣列波導光柵6 出射端62的光路與多個光電二極體3 一一對應,本實施例中設為4 路,當然根據實際需求也可以設置其他數量的路數,如6 路、8 路等等,均應在本申請保護範圍之內。
採用上述結構後,本發明具有以下優點:本發明通過將陣列波導光柵6的端面63研磨出一個角度,使得陣列波導光柵6中出射的光信號通過端面63的反射可以反射到光電二極體的感光面上,這樣在設計時在光電二極體的位置已經確定好之後,只需要在載板8上做出陣列波導光柵6的放置槽或導向結構來確定陣列波導光柵6的位置即可,安裝簡單方便,省去了陣列波導光柵6和光電二極體之間的耦合,而且光電二極體可以和光接收晶片2設在同一平面上,節省了連接線的結構以及長度,穩定非常高,製造成本也較低。
該多個光電二極體設置在同一線路板上。採用這種結構,可以確定不同光電二極體之間的位置,以及在製造時簡單方便。在將光電二極體安裝到載板8上時,可以一次性安裝,節省裝配步驟。
該光電二極體的數量與陣列波導光柵6中分出的光路的數量相同。
該陣列波導光柵6的出射端62的端面63的研磨角度a為41~46 度。
該陣列波導光柵6的出射端62的端面63的研磨角度a為42 度。
圖4 為實施例之一:該陣列波導光柵6 的入射端61 與光纖連接器4 之間設有用於耦合光纖的第一透鏡5。本實施例中第一透鏡5 設置在載板8 上,處於光纖連接器4和陣列波導光柵6的光路上,用於耦合光路,採用這種結構在光纖連接器和4陣列波導光柵6中設置第一透鏡5來進行耦合。
圖5-圖6為實施例之二:該陣列波導光柵6的入射端61直接插接在光纖連接器4上,該光纖連接器4與陣列波導光柵6連接的一端內置了一漸變折射率透鏡10。採用這種結構,不需要在載板8上進行透鏡的耦合,減少了一次耦合次數,能夠提高產品的穩定性。
1‧‧‧下殼
2‧‧‧光接收晶片
3‧‧‧光電二極管
4‧‧‧光纖連接器
5‧‧‧第一透鏡
6‧‧‧陣列波導光柵
61‧‧‧入射端
62‧‧‧出射端
63‧‧‧端面
7‧‧‧上蓋
8‧‧‧載板
9‧‧‧柔性線路板
10‧‧‧漸變折射率透鏡
a‧‧‧研磨角度
圖1為本發明的結構爆炸示意圖; 圖2 為圖1 的放大結構示意圖; 圖3 為陣列波導光柵的結構示意圖; 圖4 為實施例之一的結構示意圖; 圖5 為實施例之二的結構示意圖; 圖6 為實施例之二的光纖連接器的剖視示意圖。

Claims (7)

  1. 一種多通道並行光接收器件,包括一載板,該載板的一端的正面上設有陣列設置的多個光電二極體,以及一光接收晶片,該多個光電二極體與該光接收晶片電連接,該載板的另一端設有一光纖連接器,該載板的正面上方還設有一陣列波導光纖,該陣列波導光纖的入射端與該光纖連接器連接,用於接收一光纖上的一光信號,並在該陣列波導光纖中將該光信號按波長分成並列設置的多路光信號,該陣列波導光纖的出射端的端面設有一角度使得多路光信號通過端面反射到陣列設置的該多個光電二極體的一感光面上,該多個光電二極體與該光接收晶片設在同一平面上。
  2. 如申請專利範圍第1項所述之多通道並行光接收器件,其中,該多個光電二極體設置在同一線路板上。
  3. 如申請專利範圍第1項所述之多通道並行光接收器件,其中,該光電二極體的數量與該陣列波導光纖中分出的光路的數量相同。
  4. 如申請專利範圍第1項所述之多通道並行光接收器件,其中,該陣列波導光纖的出射端的端面的一研磨角度為41~46度。
  5. 如申請專利範圍第4項所述之多通道並行光接收器件,其中,該陣列波導光纖的出射端的端面的該研磨角度為42度。
  6. 如申請專利範圍第1項所述之多通道並行光接收器件,其中,該陣列波導光纖的入射端與該光纖連接器之間設有用於耦合該光纖的一第一透鏡。
  7. 如申請專利範圍第1項所述之多通道並行光接收器件,其中,該陣列波導光纖的入射端直接插接在該光纖連接器上,該光纖連接器與該 陣列波導光纖連接的一端內置了一漸變折射率透鏡。
TW105135616A 2016-05-23 2016-11-02 多通道並行光接收器件 TWI616695B (zh)

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