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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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