aBeam Technologies, Castro Valley, California 94546, USA.
Opt Lett. 2012 Feb 15;37(4):695-7. doi: 10.1364/OL.37.000695.
A novel type of multiband wavelength demultiplexer for on-chip spectroscopy applications is proposed, and first results of the device fabrication and characterization are reported. The devices are based on computer-designed digital planar holograms, which involve millions of lines specifically located and oriented in order to direct output light into designed focal channels according to the wavelength. Devices operate in four individual bandwidths within the visible range (477.2-478.0 nm, 528.8-529.9 nm, 586.4-587.7 nm, 628.9-630.4 nm) with 96 channels and spectral channel spacing down to 0.0375 nm/channel.
提出了一种用于片上光谱应用的新型多波段波分复用器，报道了器件制备和特性的初步结果。该器件基于计算机设计的数字平面全息图，其中涉及数以百万计的线，这些线被专门定位和定向，以便根据波长将输出光引导到设计的焦点通道中。该器件在可见光范围内的四个独立带宽（477.2-478.0nm、528.8-529.9nm、586.4-587.7nm、628.9-630.4nm）下工作，有 96 个通道，光谱通道间隔低至 0.0375nm/通道。
