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可切换光学梳状分波/合波器 Switchable Optical Interleaver / De-Interleaver
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当器件处于模式A时,系统中的所有通道(可以是任何通道间隔)经过模块的输入端和一个输出端,就如没有器件插入一样。当器件切换到模式B时,模块即成为一个标准的对称光学梳状分波器(或也可以是非对称光学梳状分波器),其工作原理示意图如下所示。通道间隔不限制在50-100GHz,可由用户指定。
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此可切换光学梳状分波/合波器有两种操作模式:模式A:全通模式B:光学梳状分波/合波器当器件处于模式A时,系统中的所有通道(可以是任何通道间隔)经过模块的输入端和一个输出端,就如没有器件插入一样。当器件切换到模式B时,模块即成为一个标准的对称光学梳状分波器(或也可以是非对称光学梳状分波器),其工作原理示意图如下所示。通道间隔不限制在50-100GHz,可由用户指定。它们可以在任何频率之间:N-GHz到2N-GHz。

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可切换光学梳状分波器的特点及优点低切换损耗闭锁型(断电时不复原)宽而平坦的通带极小的偏振相关损耗高通道隔离度极小的热敏感度色散较小且可定制插入损耗小且均匀单一器件可覆盖C和L波段通道间隔可定制有超宽通带版本有非对称光学分叉版本符合Telcordia GR-1221/63标准
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可切换光学梳状分波器的应用可升级2N-GHz到N-GHz的系统扩展现有的网络容量连接现有和新的波分复用系统平台双向网络拉曼放大器总功率检测复合波长转发器
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Parameter Definition
Example
Wavelength Range (nm) is the spectral range over which the optical interleaver's opticalperformance can be met.
1530.33 - 1563.05 nm
Insertion Loss (dB) is the relative power level transmitted to the output ports referenced to the 0-dB level when the optical interleaver is inserted. It is the power difference between the 0-dB level and the minimum power level measured within a given passband window. See figure below.
1.5 dB
Ripple (dB) is defined as the power difference between the minimum loss and the maximum loss within a given passband.
0.3 dB
Passband Bandwidth (GHz) is defined as the spectral width centered at ITU grid at a given power level, typically at 0.5 dB below the minimum insertion loss point.
ITU ± 30 GHz
Isolation (dB) is defined as the power difference between maximum insertion loss measured within a given passband window and the minimum insertion loss measured within the adjacent stopbandwindow
24 dB

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