Optimization of Coupling Efficiency of Narrow Linewidth Hybrid Wavelength Tunable Laser with Self-Injection Locking

Tatsuya Yabuki; Tomohiro Kita

Presentation information

Oral presentation

3 Optics and Photonics » 3.14 Silicon photonics and integrated photonics (formerly 3.15)

[15p-A502-1~18] 3.14 Silicon photonics and integrated photonics (formerly 3.15)

Wed. Mar 15, 2023 1:10 PM - 6:00 PM A502 (Building No. 6)

Shota Kita(NTT), Tomohiro Kita(Waseda Univ.), Taichiro Fukui(Univ. of Tokyo)

5:00 PM - 5:15 PM

△ [15p-A502-15] Optimization of Coupling Efficiency of Narrow Linewidth Hybrid Wavelength Tunable Laser with Self-Injection Locking

〇(B)Tatsuya Yabuki¹, Tomohiro Kita¹ (1.Waseda Univ.)

Keywords:laser, self-injection, linewidth

Narrow linewidth lasers are required for digital coherent communication and FMCW (Frequency Modulated Continuous Wave) method, which is a high-precision sensing technique. We have developed a narrow linewidth laser by connecting a fiber Fabry-Perot resonator to a hybrid wavelength tunable laser, which induces a self-injection locking effect. By optimizing a coupling efficiency using the tunable reflectivity mirror, we achieved a linewidth of less than 10 kHz.