Demultiplexer with 120 channels and 0.29-nm channel spacing
Demultiplexer with 120 channels and 0.29-nm channel spacing
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DOI：
10.1109/68.651118
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发表时间：
1998
影响因子：
2.6
通讯作者：
Z.J. Sun;K. McGreer;J. Broughton
中科院分区：
文献类型：
--
作者：
Z.J. Sun;K. McGreer;J. Broughton
通过将凹面光栅蚀刻到 SiO/sub 2/-SiON-SiO/sub 2/-Si 平板波导中来制造 120 通道 WDM 解复用器。光栅的凹槽通过两次全内反射来反射光。该器件适用于以 0.29 nm (36 GHz) 通道间隔对 1530-1565 nm 范围内的波长通道进行解复用。每个通道具有约0.18 nm的光谱宽度（半峰全宽）。大多数通道的光纤到光纤插入损耗在 -20 dB 到 -30 dB 之间。损耗主要是由于波导吸收造成的，对于 1539 nm 以下的波长，损耗急剧增加。
A 120-channel WDM demultiplexer was fabricated by etching a concave grating into a SiO/sub 2/-SiON-SiO/sub 2/-Si slab waveguide. The grooves of the grating reflected light by two instances of total internal reflection. The device was suitable for demultiplexing wavelength channels in the 1530-1565-nm range with a 0.29-nm (36 GHz) channel spacing. Each channel had a spectral width (full width at half maximum) of about 0.18 nm. The fiber-to-fiber insertion loss was between -20 dB and -30 dB for most channels. The loss was predominantly due to waveguide absorption and increased dramatically for wavelengths below 1539 nm.