光学
光子
光子学
物理
带宽(计算)
通带
光学滤波器
光子集成电路
谐振器
光电子学
消光比
波导管
波长
带通滤波器
电信
计算机科学
作者
Rakesh Ranjan Kumar,Hon Ki Tsang
出处
期刊:Optics Letters
[The Optical Society]
日期:2020-12-24
卷期号:46 (1): 134-134
被引量:9
摘要
We report an integrated tunable-bandwidth optical filter with a passband to stop-band ratio of over 96 dB using a single silicon chip with an ultra-compact footprint. The integrated filter is used in filtering out the pump photons in non-degenerate spontaneous four-wave mixing (SFWM), which is used for producing correlated photon pairs at different wavelengths. SFWM occurs in a long silicon waveguide, and two cascaded second-order coupled-resonator optical waveguide (CROW) filters were used to spectrally remove the pump photons. The tunable bandwidth of the filter is useful to adjust the coherence time of the quantum correlated photons and may find applications in large-scale integrated quantum photonic circuits.
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