title: Ultra-narrow linewidth full C-band tunable single-frequency linear-polarization fiber laser.
abstract: An ultra-narrow linewidth full C-band tunable single-frequency linear-polarization fiber laser based on self-injection locking has been demonstrated. By the use of a tunable narrow-band fiber Fabry-Perot interferometer, the laser wavelength could be flexibly tuned from 1527 to 1563 nm with linewidths of < 700 Hz. The laser frequency noise is less than 40 dB re Hz/Hz1/2at low frequencies (< 100 Hz) and reaches -5 dB re Hz/Hz1/2at around 25 kHz. The measured relative intensity noise (RIN) is less than -130 dB/Hz with regard to frequencies of over 3 MHz, while the obtained linear polarization extinction ratio (LPER) is higher than 28 dB. This ultra-narrow linewidth low-noise tunable single-frequency linear-polarization fiber laser provides a promising candidate for high-order quadrature amplitude modulation (QAM) optical communication system.
authors.forename: Yuning
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yuanfei
authors.initials: Y
authors.lastname: Zhang
authors.forename: Qilai
authors.initials: Q
authors.lastname: Zhao
authors.forename: Can
authors.initials: C
authors.lastname: Li
authors.forename: Changsheng
authors.initials: C
authors.lastname: Yang
authors.forename: Zhouming
authors.initials: Z
authors.lastname: Feng
authors.forename: Huaqiu
authors.initials: H
authors.lastname: Deng
authors.forename: Enbo
authors.initials: E
authors.lastname: Zhou
authors.forename: Xiaogeng
authors.initials: X
authors.lastname: Xu
authors.forename: Kenneth K Y
authors.initials: KK
authors.lastname: Wong
authors.forename: Zhongmin
authors.initials: Z
authors.lastname: Yang
authors.forename: Shanhui
authors.initials: S
authors.lastname: Xu