Odn基础知识培训之wdm器件及应用

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  • WDM PON business drivers
  • 接收侧也可以采用相干接收来提高传输距离。将已调制信号的频率和相位,与载波分量相同的正弦振荡分别相加的幅度解调。 50GHZ
  •    光滤波器是用来进行波长选择的器件,它可以从一束具有多个波长的射入光中滤出所需的波长,而除此波长以外的光将会被拒绝通过。它可以用于波长选择、光放大器的噪声滤除、增益均衡和 WDM 器件等。当滤光器设计成 WDM 器件时,它只能传输某一指定波长信道中的光信号,而对其他波长的光信号实行吸收或反射
  • 100mmX80mmX10mm
  • Odn基础知识培训之wdm器件及应用

    1. 1. Technician’s Guide to WDM Devices Karl Zhao 2010-11-2 ODN Department Fixed network Planning & System Division
    2. 2. Preface: News: 10 月 29 日,美国运营商 Verizon 日前完成了对 XG-PON2 这一先进的光纤传输技术的全球首次现场试验。该技术具备 10 Gbps 上下行对称宽带传输能力 .
    3. 3. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter and WDM device </li></ul></ul><ul><ul><li>WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    4. 4. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter and WDM device </li></ul></ul><ul><ul><li>WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    5. 5. Projected Bandwidth Growth
    6. 6. Creating Technical Discontinuity
    7. 7. Standardization Roadmap
    8. 8. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter and WDM device </li></ul></ul><ul><ul><li>WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    9. 9. G/E PON- P2P Network
    10. 10. G/E PON- P2MP Network
    11. 11. G/E PON <ul><li>下行基于广播 </li></ul><ul><ul><li>连续发光 </li></ul></ul><ul><li>上行采用 TDMA 时分复用 </li></ul><ul><ul><li>上行为光突发模式 </li></ul></ul>Splitter 1310nm ONU 2 OLT ONU 3 ONU 1 1490nm 1 1 3 2 1 1 3 2 1 1 3 2 1 1 3 2 1 1 3 2 1 2 1310nm 3 1310nm 1 2 3 1310nm Slot 1 Slot 2 Slot 3
    12. 12. WDM-PON <ul><li>Feature: </li></ul><ul><ul><li>WDM-PON 系统通常由 OLT , RN 和 ONU 三大部分组成; </li></ul></ul><ul><ul><li>WDM-PON 为每个用户分配一对专有的波长分别用于传输上下行信号; </li></ul></ul><ul><ul><li>WDM-PON 在 PON 网络物理构架上形成一个逻辑的点对点网络,但是网络拓扑是点对多点的。 </li></ul></ul>λu1 λd1 λu2 λd2 λu3 λd3 λu4 λd4 ONU
    13. 13. RN Athermal WDM MUX/DEMUX N 对 N 个 N 个 wavelength wavelength
    14. 14. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter </li></ul></ul><ul><ul><li>What is WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    15. 15. The Difference between WDM-PON &TDM-PON WDM-PON :使用波长复用和解复用器( MuxDmux ) 而不是 TDM-PON 的功率分配器 WDM-PON :连续接收机阵列,需要为每个用户单独提供接收机,即 N 个用户需要 N 个接收机。而不是 TDM-PON 中的一个。 WDM-PON :不同波长发射机阵列,传统的 TDM-PON 网络 32 或者 64 个用户才需要一个,而 WDM-PON 每个 ONT 都需要一个。这个数量的增长不仅导致设备成本的增长,而且对于功率和空间的需要也会相应增加。 WDM-PON :在每个 ONU 中需要特定波长的光发射机,而不是 TDM-PON 中的一个波长。这意味着管理和维护成本过高。需要与波长无关的 Colorless ONU 。
    16. 16. WDM-PON Vs. TDM PON TDM-PON 波长共享,统计复用,带宽利用率高; MAC 层协议特定; 一般 20km, 受测距所限仅支持 60km ; 分光比可支持到 1:128 ; OLT 侧接收机为突发模式,速率达到 10Gbps 后已达到瓶颈; 产业链成熟,规模商用,成本低; 带宽分配基于时隙; 同一 ODN 中各用户必须工作在同一速率上; 每个用户不可以在任何时候向 OLT 发送数据,而不影响其他用户; 标准研究活跃; 商业模式明确; 下行共享(必须加密)。 …… WDM-PON 波长独享,带宽升级潜力强; MAC 层协议无关; 传输距离长,可支持 100km ; 用户数可支持至 1000 ; OLT 侧接收机为连续模式 , 速率可支持 至 40Gbps ,关键在于 ONU 的无色光模块技术; 关键器件产业链不完整,成本高; 带宽分配未来可基于波长进行; 同一 ODN 中各用户可工作在不同速率上; 每个用户可以在任何时候向 OLT 发送数 据,而不影响其他用户; 尚无标准化活动; 商业模型不清晰; 用户独享信道,安全性好。 ……
    17. 17. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter </li></ul></ul><ul><ul><li>What is WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    18. 18. AOWC - All optical wavelength conversion Hybrid TDM/WDM-PON base on AOWC <ul><li>The key feature: </li></ul><ul><li>colorless ONU </li></ul><ul><li>Longer reach &higher split ratio </li></ul><ul><li>WDM capacity can be expanded to and beyond 32 wavelengths </li></ul><ul><li>The line rate of each wavelength can be up to 10Gbps </li></ul><ul><li>The Extender Box +AOWC is shared by all ONUs, per subscriber cost is low </li></ul>
    19. 19. FTTH/FTTP GPON
    20. 20. XG-PON for new builds
    21. 21. GPON and XG-PON wavelength bands
    22. 22. XG-PON field trial overview
    23. 23. Concluding remarks and next steps
    24. 24. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter </li></ul></ul><ul><ul><li>What is WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    25. 25. ZTE Hybrid PON prototype TX RX TX RX TX RX TX RX XG-PON OLT filter1 XG-PON ONU WDM r1 G-PON ONU filter2 Splitter (s) G-PON OLT <ul><ul><li>WBF2 </li></ul></ul><ul><ul><li>WBF1 </li></ul></ul><ul><ul><li>Filter3 </li></ul></ul><ul><ul><li>Filter4 </li></ul></ul>Video
    26. 26. WDM1r filter provided by ZTE ITU-T G.984.5 Specs
    27. 27. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter </li></ul></ul><ul><ul><li>What is WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    28. 28. WDM device Brief <ul><li>波分复用 (WDM) 器 </li></ul><ul><li>WDM 器件是 WDM 系统的重要组成部分,将不同光源波长的信号结合在一起经一根传输光纤输出的器件称为合波器。反之,经同一传输光纤送来的多波,长信号分解为个别波长分别输出的器件称为分波器。从原理上来说,该器件是互易 ( 双向可逆 ) 的,有时同一器件既可作分波器,又可以作合波器。 </li></ul><ul><li>(1)WDM 器件的种类 </li></ul><ul><li>  目前已商用的 WDM 器件可以分为 4 类,即角色散器件、 干涉滤波器 、熔锥型 WDM 和集成光波导型。较常用的 WDM 器件有以下几种 </li></ul>
    29. 29. Optical Filter principle   DTF 干涉滤波器由几十层不同材料、不同折射率和不同厚度的介质膜按照设计要求组合起来。它能透过指定波长的光,而其他波长的光,由于透射率迅速下降而无法透过,从而达到了滤波的目的。因此它可以作为波长敏感元件来构成 WDM 器件
    30. 30. 干涉膜滤光型 WDM <ul><li>光滤波器是用来进行波长选择的器件,它可以从一束具有多个波长的射入光中滤出所需的波长,而除此波长以外的光将会被拒绝通过。它可以用于波长选择、光放大器的噪声滤除、增益均衡和 WDM 器件等。当滤光器设计成 WDM 器件时,它只能传输某一指定波长信道中的光信号,而对其他波长的光信号实行吸收或反射。在 WDM 技术中应用较为广泛的一种干涉滤光器是多层介质膜 (DTF) 干涉滤光器 </li></ul><ul><li>  DTF 干涉滤波器型 WDM 器件的主要优点是设计与所用光纤参数几乎完全无关,可以实现结构稳定的小型化器件,信号通带较平坦,与极化无关,插入损耗较低,温度特性很好,可达 0 . 001nm / °C 以下。 </li></ul>
    31. 31. WWDM/CWDM Device
    32. 32. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter </li></ul></ul><ul><ul><li>What is WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    33. 33. Fiber& Capillary &WDM filter G652.C/D Fibers/Capillary /Glass Ferrule/WDM Filter Fibers Potting, polishing, WDM filter curing, port1 and port2 IL test
    34. 34. Glass Ring location Glass ring location G652.C/D Fibers/Capillary /Glass Ferrule/WDM Filter/Glass ring
    35. 35. Copper tube preparation G652.C/D Fibers/Capillary /Glass Ferrule/WDM Filter/Glass ring/copper tuber
    36. 36. Port3 Fiber& Capillary preparation G652.C/D Fibers/Capillary /Glass Ferrule/WDM Filter/Glass ring/copper tuber Fibers Potting, polishing, WDM filter curing
    37. 37. Kit joint G652.C/D Fibers/Capillary /Glass Ferrule/WDM Filter/Glass ring/copper tuber WDM filter curing, port1 and port2 and port3 IL/Isolation/PDL test
    38. 38. 2 types packages
    39. 39. WDM1r specifications 0.5 ps Max Polarization Mode dispersion 0.3 dB Max Polarization dependent loss 50 dB Min Optical return loss 50 dB Min Directivity 30 dB Min Isolation @ 1290-1330 &1480-1500 < 1 dB Max Insertion loss @ 1524 to 1625 nm < 1 dB Max Insertion loss @ 1270 +/- 10 nm 1260 to 1280 & 1524 to 1625 nm Wavelength range  r Reflect Channel 30 dB Min Isolation @ 1260 -1280 & 1524 -1625 < 0.8 dB Max Insertion Loss @ 1490 +/- 10 nm < 0.8 dB Max Insertion loss @ 1310 +/- 20 nm 1290 to 1330 &1480 to 1500 nm Wavelength range  p Pass Channel G-PON&XG-PON1 Performance specification
    40. 40. Agenda <ul><li>WDM-PON </li></ul><ul><ul><li>Why is WDM-PON </li></ul></ul><ul><ul><li>What is WDM-PON </li></ul></ul><ul><ul><li>What is difference between WDM-PON and TDM-PON </li></ul></ul><ul><li>WDM/TDM Hybrid PON </li></ul><ul><ul><li>Verizon Hybrid PON </li></ul></ul><ul><ul><li>ZTE Hybrid PON </li></ul></ul><ul><li>WDM Device </li></ul><ul><ul><li>What is Optical Filter </li></ul></ul><ul><ul><li>What is WDM device process </li></ul></ul><ul><ul><li>Introduce to WDM device test and Reliability Requirements </li></ul></ul>
    41. 41. Equipments and Device for testing <ul><li>Finisar light source(FLS-30-40-55-C) </li></ul><ul><li>YOKOGAMA AQ6370B optical spectrum analyzer </li></ul><ul><li>单色仪的使用也使其测量速度和动态范围( close-in dynamic range )两项性能都得到了改善,新机型具备更加出色的光学性能,波长分辨率达 0.02nm ,动态范围大于 60dB </li></ul>Light source Spectrum analyzer
    42. 42. IL/Isolation for Port1 (Before adding connector) <ul><li>Operating Wavelength@1260~1620nm </li></ul><ul><li>IL @1290~1330 & 1480~1500nm </li></ul><ul><li>Port1 Isolation@1260~1280 & 1535~1580nm </li></ul><ul><li>Testing condition:25℃ </li></ul>
    43. 43. IL/Isolation for Port2 (Before adding connector) <ul><li>Operating Wavelength@1260~1620nm </li></ul><ul><li>IL@1260~1280&1535~1580nm </li></ul><ul><li>Port2 Isolation@1290~1330 & 1480~1500nm </li></ul><ul><li>Testing condition: 25℃ </li></ul>
    44. 44. IL/PDL for Port1 (Adding connector and attached adapter) <ul><li>IL /PDL@1310&1490nm </li></ul><ul><li>Testing condition: -5℃,25℃&65℃ </li></ul>
    45. 45. IL/PDL for Port2 (After adding connector and attached adapter) <ul><li>IL@1270 & 1550nm </li></ul><ul><li>Testing condition: -5℃,25℃&65℃ </li></ul>
    46. 46. Directivity (Port 1 to Port 2) <ul><li>Directivity@1310 &1490nm </li></ul><ul><li>Testing condition: 25℃ </li></ul>
    47. 47. Directivity (Port 2 to Port 1) <ul><li>Directivity@1270&1550nm </li></ul><ul><li>Testing condition: 25℃ </li></ul>
    48. 48. Return Loss For COM <ul><li>RL@1270,1310,1490 & 1550nm for COM </li></ul><ul><li>Testing condition: 25℃ </li></ul>
    49. 49. Return Loss For Port 1 <ul><li>RL@1310 & 1490nm for Port 1 </li></ul><ul><li>Testing condition: 25℃ </li></ul>
    50. 50. Return Loss For port 2 <ul><li>RL@1270 &1550nm for Port 2 </li></ul><ul><li>Testing condition: 25℃ </li></ul>
    51. 51. Reliability Requirements <ul><li>GR-1221-CORE ( Issue 2, January 1999 ) </li></ul><ul><li>Generic Reliability Assurance Requirements for Passive Optical Components </li></ul><ul><li>GR-1209-CORE ( Issue 3, March 2001 ) </li></ul><ul><li>Generic Requirements for Passive Optical Components </li></ul>Acceptance Spec:
    52. 52. Endurance test 1 <ul><li>高温测试 </li></ul><ul><ul><li>高温: 85 ( ±2℃ ) </li></ul></ul><ul><ul><li>湿度:< 40% ( ±5% ) RH </li></ul></ul><ul><ul><li>时间 2000 小时 , 分别在 500 , 1000 , 2000 小时后三个时间点测试; </li></ul></ul><ul><ul><li>测试所有端口插入损耗 , 测试步骤参见 EIA/TIA-455-5A. </li></ul></ul><ul><li>低温测试 </li></ul><ul><ul><li>低温: -40℃ ( ±5℃ ) </li></ul></ul><ul><ul><li>湿度:不予控制 </li></ul></ul><ul><ul><li>时间 2000 小时 . 分别在 500 , 1000 , 2000 小时后三个时间点测试; </li></ul></ul><ul><ul><li>测试步骤参见 EIA/TIA-455-5A. </li></ul></ul><ul><li>高温高湿 </li></ul><ul><ul><li>高温: 85℃ ( ±2℃ ) </li></ul></ul><ul><ul><li>湿度: 85% ( ±5% ) RH </li></ul></ul><ul><ul><li>时间 2000 小时,分别在 500 , 1000 , 2000 小时后三个时间点测试; </li></ul></ul><ul><ul><li>测试所有端口插入损耗 , 测试步骤参见 EIA/TIA-455-5A,Test type1. </li></ul></ul>
    53. 53. Endurance test 2 <ul><li>温度、湿度组合测试 </li></ul><ul><ul><li>高温: 75℃ ( ±2℃ ) </li></ul></ul><ul><ul><li>低温: -40℃ ( ±2℃ ) </li></ul></ul><ul><ul><li>保持时间: 3~10 小时 </li></ul></ul><ul><ul><li>在 75℃ 湿度保持 85%-95% ;在 25℃ 和 -40℃ ,湿度不控制 . </li></ul></ul><ul><ul><li>循环次数至少: 5 次(每个完整的循环包含 5 个小循环) </li></ul></ul><ul><li>高温高湿循环 </li></ul><ul><ul><li>温度: -40℃ to 75℃ ( ±2℃ ) </li></ul></ul><ul><ul><li>极限温度保持时间: 15 分钟 </li></ul></ul><ul><ul><li>温度变化率: 1 分钟内从 -40℃ 到 85℃. </li></ul></ul><ul><ul><li>循环次数: 100 次 </li></ul></ul><ul><ul><li>测试步骤参见 MIL-STD-883 Method 1010 </li></ul></ul>
    54. 54. Mechanical Integrity 1 <ul><li>振动测试 </li></ul><ul><ul><li>最大加速度 20g ; </li></ul></ul><ul><ul><li>频率: 20 ~ 2000HZ ; </li></ul></ul><ul><ul><li>时间: 4min/cycles , 4cycles/axis </li></ul></ul><ul><ul><li>测试步骤参见 MIL-STD-883 Method 2007. </li></ul></ul><ul><li>机械冲击 </li></ul><ul><ul><li>冲击重量: 500g ; </li></ul></ul><ul><ul><li>冲击次数: 5 次每个方向 ( 每个轴均需 ) , </li></ul></ul><ul><ul><li>持续时间: 1ms; </li></ul></ul><ul><ul><li>测试步骤参见 MIL-STD-883 Method 2002. </li></ul></ul><ul><li>温度冲击测试 </li></ul><ul><ul><li>冲击重量:△ T=100℃(0℃ to 100℃), 从水中到水中; </li></ul></ul><ul><ul><li>持续时间:≥ 5 分钟,在温度极点时 ; </li></ul></ul><ul><ul><li>转移时间:≤ 15 秒, </li></ul></ul><ul><ul><li>循环次数: 15 次; </li></ul></ul><ul><ul><li>测试步骤参见 MIL-STD-883 Method 1011 ; </li></ul></ul>
    55. 55. Mechanical Integrity 2 <ul><li>光纤侧抗拉测试 </li></ul><ul><ul><li>测试环境: 0.23kg 在 90 度至少 5 秒 </li></ul></ul><ul><ul><li>方向:两个方向 </li></ul></ul><ul><ul><li>测试步骤参见 MIL-STD-883 ; </li></ul></ul><ul><li>光纤和光缆抗拉测试 </li></ul><ul><ul><li>测试环境: 0.45kg </li></ul></ul><ul><ul><li>继续时间: 5 秒 </li></ul></ul><ul><ul><li>测试步骤参见 MIL-STD-883 ; </li></ul></ul>
    56. 56. Lot Tolerance Percentage Defective (LTPD) Eg: LTPD20 表示客户有 20% 的风险收到不满足允收标准的批次
    57. 57. 我们的产品能满足 20 年吗?
    58. 58. <ul><li>Any Questions? </li></ul>

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