Weifeng Zhang Microwave Photonic Research Lab University of Ottawa Photonic Temporal Differentiator

Outline  Introduction to photonic temporal differentiator  Solution in fiber grating  Solution in waveguide grating  Conclusion 1

Outline  Introduction to photonic temporal differentiator  Solution in fiber grating  Solution in waveguide grating  Conclusion 2

Introduction to photonic temporal differentiator  What is photonic temporal differentiator? 3

Outline  Introduction to photonic temporal differentiator  Solution in fiber grating  Solution in waveguide grating  Conclusion 4

Solution in fiber grating M. Li, L. Shao, J. Albert, and J. P. Yao, "Continuously tunable photonic fractional temporal differentiator based on a tilted fiber Bragg grating," IEEE Photon. Technol. Lett., vol. 23, no. 4, pp , Feb

Outline  Introduction to photonic temporal differentiator  Solution in fiber grating  Solution in waveguide grating  Conclusion 6

Solution in waveguide grating  Using Phase-shift waveguide grating.  Design - Characterize: -Central wavelength:1550 nm -TE Polarization -Broadband 3-dB bandwidth - Corrugation width, duty cycle.  Tunability - Temperature 7 *From Wei Shi

Outline  Introduction to photonic temporal differentiator  Solution in fiber grating  Solution in waveguide grating  Conclusion 8

Conclusion  Introduction to photonic temporal differentiator  Solution in fiber grating  Solution in waveguide phase-shift grating 9

Thank you! 11