Ultrafast All-Optical Signal Modulation Induced by Optical Kerr Effect in a Tellurite Photonic Bandgap Fiber
oleh: Tonglei Cheng, Fan Zhang, Shunta Tanaka, Shuguang Li, Xin Yan, Xuenan Zhang, Takenobu Suzuki, Yasutake Ohishi
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2019-10-01 |
Deskripsi
Ultrafast all-optical signal modulation induced by optical Kerr effect (OKE) was demonstrated in an all-solid tellurite photonic bandgap fiber (PBGF) which was designed and fabricated based on TeO<sub>2</sub>-Li<sub>2</sub>O-WO<sub>3</sub>-MoO<sub>3</sub>-Nb<sub>2</sub>O<sub>5</sub> (TLWMN, high-index rods), TeO<sub>2</sub>-ZnO-Na<sub>2</sub>O-La<sub>2</sub>O<sub>3</sub> (TZNL, background), and TeO<sub>2</sub>-ZnO-Li<sub>2</sub>O-K<sub>2</sub>O-Al<sub>2</sub>O<sub>3</sub>-P<sub>2</sub>O<sub>5</sub> (TZLKAP, cladding) glasses. At the input of a control pulse with high intensity, OKE occurred in the tellurite PBGF and the transmission bands of the tellurite PBGF shifted. The signal at 1.57 μm transmitting in the fiber core can be ultrafast all-optically modulated by the ultrafast single pulse (200 kW, 200 fs) under OKE, where the modulation speed can reach 50 GHz, faster than some commercial LiNbO<sub>3</sub> modulators. The results in this paper can be applied to multi-monitors, local area network, detectors, multi-sources, etc.