Flat-top and ultranarrow bandpass filter designed by sampled fiber Bragg grating with multiple equivalent phase shifts

The design and fabrication of optical fi

The design and fabrication of optical fiber Bragg grating filter with dual-bandpass pair by phase sampling and phase shift techniques

✍ Li Xia; P. Shum; Quoc Nam Ngo; Tee Hiang Cheng 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 92 KB

## Abstract Phase sampling and phase shift techniques are introduced in a uniform fiber Bragg grating structure to achieve a multi‐bandpass filter with ultranarrow transmission bandwidth. A pair of dual‐bandpass transmission windows are opened at 1542.32, 1542.36, and 1542.66, 1542.71 nm, respectiv