title: Broadband lightwave synthesized frequency sweeper using self-induced auto-tracking filter.
abstract: We present a scheme to broaden the sweeping span of lightwave synthesized frequency sweeper (LSFS) by using self-induced auto-tracking filter (SIATF). It is based on spatial-hole-burning effect in unpumped erbium-doped fiber (EDF), equivalent to introducing a Bragg grating. This Bragg grating works as the SIAFT, tracks the frequency of the incident optical signal automatically. It broadens LSFS's sweeping span limited by the homogeneous broadening of EDF. The scheme is demonstrated experimentally that the amplified spontaneous emission (ASE) noise is effectively suppressed meanwhile sweeping span of LSFS is enlarged. 12.48nm sweeping span within 3.5dB power change is obtained, which corresponds to 1.56THz sweeping span.
authors.forename: Zhaoying
authors.initials: Z
authors.lastname: Wang
authors.forename: Shiyuan
authors.initials: S
authors.lastname: Liu
authors.forename: Sha
authors.initials: S
authors.lastname: Luo
authors.forename: Quan
authors.initials: Q
authors.lastname: Yuan
authors.forename: Rui
authors.initials: R
authors.lastname: Ma
authors.forename: Chunfeng
authors.initials: C
authors.lastname: Ge
authors.forename: Tianxin
authors.initials: T
authors.lastname: Yang