title: Intensity-modulating characteristics of a laser diode subjected to optical injection.
abstract: We have found that the optical power of a laser diode (LD) does not change with the injected light intensity that is modulated when its injection current is at some specific values. The amplitude of optical power change of the LD varies periodically with the increase of the injection current. It is made clear through theoretical analysis that these phenomena are caused by gain compression and interband carrier absorption of the LD that depend on longitudinal mode competition, bandgap-shrinkage effects, thermal conduction, and so on. Our experimental results make it easy to eliminate optical power change of LDs. We only need to choose a proper value of the injection current.
authors.affiliation: Information Optics Laboratory, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. ipt26267@mail.shcnc.ac.cn
authors.forename: Xiangzhao
authors.initials: X
authors.lastname: Wang
authors.forename: Yingming
authors.initials: Y
authors.lastname: Liu
authors.forename: Hongbin
authors.initials: H
authors.lastname: Lu
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Wang
authors.forename: Zujie
authors.initials: Z
authors.lastname: Fang