Biomedical Engineering & Physics, Academic Medical Center, University of Amsterdam, Amsterdam, 1100 DE, Netherlands.
Opt Lett. 2011 Apr 1;36(7):1293-5. doi: 10.1364/OL.36.001293.
We designed and fabricated an arrayed-waveguide grating (AWG) in silicon oxynitride as a spectrometer for spectral domain optical coherence tomography (SD-OCT). The AWG has a footprint of only 3.0 cm × 2.5 cm, operates at a center wavelength of 1300 nm, and has 78 nm free spectral range. OCT measurements are performed that demonstrate imaging up to a maximum depth of 1 mm with an axial resolution of 19 μm, both in agreement with the AWG design parameters. Using the AWG spectrometer combined with a fiber-based SD-OCT system, we demonstrate cross-sectional OCT imaging of a multilayered scattering phantom.
我们设计并制作了一个氮化硅中的阵列波导光栅 (AWG)，用作光谱域光相干断层扫描 (SD-OCT) 的光谱仪。AWG 的占地面积仅为 3.0 厘米×2.5 厘米，中心波长为 1300 纳米，自由光谱范围为 78 纳米。进行了 OCT 测量，证明了在最大深度为 1 毫米处具有 19 微米的轴向分辨率的成像，这与 AWG 的设计参数一致。使用 AWG 光谱仪结合基于光纤的 SD-OCT 系统，我们展示了多层散射体的横截面 OCT 成像。
