physics.optics physics.app-ph
Widely Tunable Photonic Filter Based on Equivalent Chirped Four-Phase-Shifted Sampled Bragg Gratings
Simeng Zhu Bocheng Yuan Mohanad Al-Rubaiee Yiming Sun Yizhe Fan Ahmet Seckin Hezarfen Stephen J. Sweeney John H. Marsh Lianping Hou