CN100413235C - 波分复用装置 - Google Patents

波分复用装置 Download PDF

Info

Publication number
CN100413235C
CN100413235C CNB021284717A CN02128471A CN100413235C CN 100413235 C CN100413235 C CN 100413235C CN B021284717 A CNB021284717 A CN B021284717A CN 02128471 A CN02128471 A CN 02128471A CN 100413235 C CN100413235 C CN 100413235C
Authority
CN
China
Prior art keywords
optical fiber
grin lens
contact pins
filter plate
fiber contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB021284717A
Other languages
English (en)
Other versions
CN1466303A (zh
Inventor
戴书麟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Original Assignee
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hongfujin Precision Industry Shenzhen Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Hongfujin Precision Industry Shenzhen Co Ltd
Publication of CN1466303A publication Critical patent/CN1466303A/zh
Application granted granted Critical
Publication of CN100413235C publication Critical patent/CN100413235C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/2937—In line lens-filtering-lens devices, i.e. elements arranged along a line and mountable in a cylindrical package for compactness, e.g. 3- port device with GRIN lenses sandwiching a single filter operating at normal incidence in a tubular package

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

一种波分复用装置，包括一双光纤插针、一自聚焦透镜及第一、第二滤波片，该双光纤插针具第一光纤和第二光纤，该自聚焦透镜与该双光纤插针相对齐，且具一远离双光纤插针的前端面，该第一滤波片位于该自聚焦透镜的前端面上，其可通过特定波长并反射其余波长光信号，该第二滤波片位于该自聚焦透镜与双光纤插针间的反射光路上，其可反射特定波长光信号并通过其余波长光信号。

Description

波分复用装置
【技术领域】
本发明是关于一种光传输装置，尤其是一种波分复用装置。
【背景技术】
在光传输系统中，对带宽的需求日益增强，且随着宽带服务的不断完善，光通信网络作为传输媒质将更普及。容量是评定一系统竞争力强弱的重要参数。激光已广泛应用于光通信网络中，其发射一携带信息的光信号至光纤，该光纤传输该光信号至一装置以进一步处理。光信号在光纤中传输多为单方向传输。光传输系统中，光纤的双向传输可为通信服务商在有限的资源上提供额外利益。
光波分复用系统中，滤波片用于过滤输入光信号中不需要的部分。假设自双光纤插针的第一光纤输入的输入光信号，含λ1和λ2二不同波长的光信号，滤波片只允许波长为λ1的光信号通过并反射波长为λ2的光信号，故透射光可获得较高的隔离度，反射光信号自双光纤插针的第二光纤输出以进一步处理。但该反射光中除波长为λ2的光信号外还包括部分被反射的波长为λ1的光信号，从而反射端的隔离度相对较差，增加处理该反射光信号的复杂度及难度。
【发明内容】
本发明的目的在于提供一种具高隔离度的波分复用装置。
本发明的目的是这样实现的：提供一种波分复用装置，包括一双光纤插针、一自聚焦透镜及第一、第二滤波片，该双光纤插针具第一光纤和第二光纤，该自聚焦透镜与该双光纤插针相对齐，且具一远离双光纤插针的前端面，该第一滤波片位于该自聚焦透镜的前端面上，其可通过特定波长并反射其余波长光信号，该第二滤波片位于该自聚焦透镜与双光纤插针间的反射光路上，其可反射特定波长光信号并通过其余波长光信号。
与现有的波分复用装置相比较，本发明具有以下优点：使用第二滤波片可提高第二光纤对波长为λ1的光信号的隔离度。第一滤波片反射的光信号中除波长λ2的光信号外还含有少量被第一滤波片反射的波长为λ1的光信号，利用第二滤波片可减少该少量λ1的光信号，从而大大降低进入第二光纤的光信号中波长为λ1的光信号。
【附图说明】
图1是本发明的波分复用装置的剖面图。
图2是一单光纤准置装置，其可与本发明波分复用装置配合形成一波分复用组合。
【具体实施方式】
请参阅图1，本发明的波分复用装置包括一金属套管1、一玻璃套管2、一双光纤插针3和一自聚焦透镜4。其中，玻璃套管2收容于金属套管1中，二者共同形成一收容空间(图未标示)。双光纤插针3收容于该收容空间内并固定于玻璃套管2中，其收容第一、第二光纤30、32并具一末端面34。自聚焦透镜4也位于该收容空间内并通过在二者之间隙7内粘胶固定于金属套管1中，其远离双光纤插针3的前端面(图未标示)延伸出该收容空间。该波分复用装置进一步包括第一、第二滤波片5、6，第一滤波片5位于自聚焦透镜4的前端面，第二滤波片6位于输出反射光信号的光路中，其可固定于自聚焦透镜4的后端面40，也可固定于双光纤插针3与自聚焦透镜4相对的末端面34。自聚焦透镜4与双光纤插针3相对设置，二者相距一定间隔。该波分复用装置与一单光纤准直装置(如图2所示)相配合以形成一具三端口的波分复用组合。
第一光纤30输入一包含波长为λ1和λ2的光信号，该光信号经自聚焦透镜4准直至第一滤波片5。由于第一滤波片5只可通过波长为λ1的光信号并反射其余波长的光信号，该波长为λ1的光信号经第一滤波片5透射后传输至其它装置，如单光纤准直装置。因滤波片的选波特性，第一滤波片5的反射光束中含有少量波长为λ1的光信号，该反射光束经自聚焦透镜4会聚至第二滤波片6。第二滤波片6反射波长为λ1的光信号并通过其余波长的光信号，故波长为λ2的光信号自第二滤波片6输出，经由第二光纤32传输至其它装置。

Claims (5)

1. 一种波分复用装置，包括一双光纤插针、一自聚焦透镜及可通过特定波长并反射其余波长光信号的第一滤波片，该双光纤插针具第一光纤和第二光纤，该自聚焦透镜与该双光纤插针相对齐，且具一远离双光纤插针的前端面，该第一滤波片位于该自聚焦透镜的前端面上，其特征在于：该波分复用装置进一步包括一反射特定波长光信号并通过其余波长光信号的第二滤波片，其位于该自聚焦透镜与该双光纤插针间的反射光路上。
2. 如权利要求1所述的波分复用装置，其特征在于该自聚焦透镜进一步包括一与前端面相对的后端面，该第二滤波片位于该后端面上。
3. 如权利要求1所述的波分复用装置，其特征在于该双光纤插针进一步包括一与自聚焦透镜相对的端面，该第二滤波片位于该端面上。
4. 如权利要求1所述的波分复用装置，其特征在于该波分复用装置进一步包括一玻璃套管和一金属套管，且该玻璃套管收容于该金属套管中，该双光纤插针粘胶固定于该玻璃套管中，该自聚焦透镜通过粘胶固定于该金属套管中。
5. 如权利要求4所述的波分复用装置，其特征在于该自聚焦透镜一端延伸出该金属套管。
CNB021284717A 2002-06-05 2002-09-07 波分复用装置 Expired - Fee Related CN100413235C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/163830 2002-06-05
US10/163,830 US6816645B2 (en) 2002-06-05 2002-06-05 High reflection isolation device

Publications (2)

Publication Number Publication Date
CN1466303A CN1466303A (zh) 2004-01-07
CN100413235C true CN100413235C (zh) 2008-08-20

Family

ID=29710061

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB021284717A Expired - Fee Related CN100413235C (zh) 2002-06-05 2002-09-07 波分复用装置

Country Status (3)

Country Link
US (1) US6816645B2 (zh)
CN (1) CN100413235C (zh)
TW (1) TW556010B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7130502B2 (en) * 2004-02-06 2006-10-31 Nippon Sheet Glass Co., Ltd. Wavelength division multiplexing optical coupler
US7289733B1 (en) 2004-05-03 2007-10-30 Alliance Fiber Optic Products, Inc. High reflection isolation optical devices and the method for making the same
US7412124B1 (en) 2004-06-18 2008-08-12 Alliance Fiber Optic Products, Inc. Optical module with high reflection isolation and compact size
US7912374B1 (en) 2004-09-30 2011-03-22 Alliance Fiber Optic Products, Inc. High isolation wavelength division devices
JP4466860B2 (ja) * 2005-05-17 2010-05-26 横河電機株式会社 受光モジュール
US8624738B2 (en) * 2008-03-17 2014-01-07 Radar Corporation Golf club apparatuses and methods
CN104280825A (zh) * 2013-07-02 2015-01-14 上海中科股份有限公司 Wdm器件及制作方法,wdm波分复用器及制作方法
US10281652B2 (en) * 2016-08-16 2019-05-07 Alliance Fiber Optic Products, Inc. Two-port high isolation filter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521733A (en) * 1993-04-09 1996-05-28 Fujikura Ltd Optical switching device for wavelength-multiplexing optical communication
US6347170B1 (en) * 1999-05-06 2002-02-12 Jds Uniphase, Inc. Low-cost wavelength division multiplexed (WDM) coupler with more flexible and precise optical faith adjustment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6498876B1 (en) * 1999-02-22 2002-12-24 Alliance Fiber Optics Products, Inc. Multi-port fiber optic device with v-groove ferrule
US20020118920A1 (en) * 2001-02-26 2002-08-29 Francis Kurt R. Multi-port optical filtering glass package and method of manufacture thereof
US6701040B2 (en) * 2001-10-15 2004-03-02 Ac Photonics, Inc. Dense wavelength division multiplexer configuration
US20030103725A1 (en) * 2001-12-04 2003-06-05 Li Jim W. Packaging methodology for assembly automation for dwdm and oadm modules
US6961496B2 (en) * 2002-03-26 2005-11-01 Avanex Corporation Optical package with cascaded filtering

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521733A (en) * 1993-04-09 1996-05-28 Fujikura Ltd Optical switching device for wavelength-multiplexing optical communication
US6347170B1 (en) * 1999-05-06 2002-02-12 Jds Uniphase, Inc. Low-cost wavelength division multiplexed (WDM) coupler with more flexible and precise optical faith adjustment

Also Published As

Publication number Publication date
US20030228101A1 (en) 2003-12-11
TW556010B (en) 2003-10-01
CN1466303A (zh) 2004-01-07
US6816645B2 (en) 2004-11-09

Similar Documents

Publication Publication Date Title
EP0859248A2 (en) Multi-port optical device
CA2203729C (en) Method and circuit for demultiplexing an optical signal
US4955014A (en) Broadband optical communication system, particularly in the subscriber area
CN100413235C (zh) 波分复用装置
CN202334525U (zh) 光网络单元和无源光网络
CN109557618A (zh) 波分复用装置
CN114257307B (zh) 一种光纤到户混传光收发模块
US20040161240A1 (en) Module having two bi-directional optical transceivers
JP4971331B2 (ja) マルチモードファイバによる高ビットレート伝送
CN209215629U (zh) 一种单纤双向光模块和由其组成的波分复用光传输系统
CN208506305U (zh) 一种多波长合波光学模块
CN201716439U (zh) 一种单纤双向双端口光收发一体组件
CN113311543A (zh) 新型粗波分复用器组件
EP2846178B1 (en) Multi-channel, multi-port mono-directional and bi-directional optical tap coupler
US20030174937A1 (en) Integrated WDM coupler for duplex communication
CN201892762U (zh) 用于cfp-lr4的波分复用解复用光组件
CN109802745A (zh) 一种用于200g/400g光收发模块的8通道波分复用/解复用器件
CN113917612B (zh) 一种光环行器与波分复用器的组合器件
CN211061792U (zh) 基于滤光片的四波长光路结构
CN113655567B (zh) 一种具有多通道的波分复用器
KR20190068004A (ko) 광학계 구조를 단순화한 광 서브 어셈블리
US20040114870A1 (en) Optical add/drop patch cord
CN102045111A (zh) 用于cfp-lr4的波分复用解复用光组件
EP0950297B1 (en) A bidirectional router and a method of monodirectional amplification
CN103105645A (zh) 紧凑型四端口三波分复用器

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080820

Termination date: 20160907

CF01 Termination of patent right due to non-payment of annual fee