TY - JOUR
T1 - On-chip tunable photonic delay line
AU - Ji, Xingchen
AU - Yao, Xinwen
AU - Gan, Yu
AU - Mohanty, Aseema
AU - Tadayon, Mohammad A.
AU - Hendon, Christine P.
AU - Lipson, Michal
N1 - Publisher Copyright:
© 2019 Author(s).
PY - 2019/9/9
Y1 - 2019/9/9
N2 - An on-chip tunable photonic delay line is a key building block for applications including sensing, imaging, and optical communication. However, achieving long and tunable delay lines within a small footprint remains challenging. Here, we demonstrate an on-chip tunable photonic delay line using ultralow loss high confinement Si3N4 waveguides with integrated microheaters. As an example of potential application, we embed a 0.4 m delay line within an optical coherence tomography (OCT) system. We show that the delay line can extend the OCT imaging range by 0.6 mm while maintaining a high signal to noise ratio. Our tunable photonic delay line is achieved without any moving parts which could provide high stability, critical for interference based applications.
AB - An on-chip tunable photonic delay line is a key building block for applications including sensing, imaging, and optical communication. However, achieving long and tunable delay lines within a small footprint remains challenging. Here, we demonstrate an on-chip tunable photonic delay line using ultralow loss high confinement Si3N4 waveguides with integrated microheaters. As an example of potential application, we embed a 0.4 m delay line within an optical coherence tomography (OCT) system. We show that the delay line can extend the OCT imaging range by 0.6 mm while maintaining a high signal to noise ratio. Our tunable photonic delay line is achieved without any moving parts which could provide high stability, critical for interference based applications.
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U2 - 10.1063/1.5111164
DO - 10.1063/1.5111164
M3 - Article
AN - SCOPUS:85072391476
VL - 4
JO - APL Photonics
JF - APL Photonics
IS - 9
M1 - 090803
ER -