title: Dynamic frequency-noise spectrum measurement for a frequency-swept DFB laser with short-delayed self-heterodyne method.
abstract: We proposed and experimentally demonstrated a short-delayed self-heterodyne method with 15.5m delay to get a large-frequency-range laser frequency-noise spectrum over 10Hz to 50 MHz, and an averaging approach to extract the intrinsic frequency noise of a frequency-swept laser. With these two techniques, dynamic frequency-noise spectrum of a frequency-swept DFB laser when free running and servo-controlled are both measured. This measurement method permits accurate and insightful investigation of laser stability.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhou
authors.forename: Jie
authors.initials: J
authors.lastname: Qin
authors.forename: Weilin
authors.initials: W
authors.lastname: Xie
authors.forename: Zhangweiyi
authors.initials: Z
authors.lastname: Liu
authors.forename: Yitian
authors.initials: Y
authors.lastname: Tong
authors.forename: Yi
authors.initials: Y
authors.lastname: Dong
authors.forename: Weisheng
authors.initials: W
authors.lastname: Hu