A Comprehensive Study on Phase Sensitive Amplification and Stimulated Brillouin Scattering in Nonlinear Fibers with Longitudinally Varying Dispersion  
[PERSON]  
1 Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; [EMAIL_ADDRESS] (D.C.); [EMAIL_ADDRESS] (S.S.); [EMAIL_ADDRESS] (M.K. ); [EMAIL_ADDRESS] (S.Y. ); [EMAIL_ADDRESS] (D.V.) [PERSON]  
1 Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; [EMAIL_ADDRESS] (D.C.); [EMAIL_ADDRESS] (S.S.); [EMAIL_ADDRESS] (M.K. ); [EMAIL_ADDRESS] (S.Y. ); [EMAIL_ADDRESS] (D.V.) [PERSON]  
1 Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; [EMAIL_ADDRESS] (D.C.); [EMAIL_ADDRESS] (S.S.); [EMAIL_ADDRESS] (M.K. ); [EMAIL_ADDRESS] (S.Y. ); [EMAIL_ADDRESS] (D.V.) [PERSON]  
1 Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; [EMAIL_ADDRESS] (D.C.); [EMAIL_ADDRESS] (S.S.); [EMAIL_ADDRESS] (M.K. ); [EMAIL_ADDRESS] (S.Y. ); [EMAIL_ADDRESS] (D.V.) [PERSON]  
5 Dianov Fiber Optic Research Center, Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., 119991 Moscow, Russia; [EMAIL_ADDRESS] (K.G. ); [EMAIL_ADDRESS] (S.S.)  
[PERSON]  
5 Dianov Fiber Optic Research Center, Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., 119991 Moscow, Russia; [EMAIL_ADDRESS] (K.G. ); [EMAIL_ADDRESS] (S.S.)  
[PERSON]  
5 Dianov Fiber Optic Research Center, Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., 119991 Moscow, Russia; [EMAIL_ADDRESS] (S.S.)  
[PERSON]  
1 Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; [EMAIL_ADDRESS] (D.C.); [EMAIL_ADDRESS] (S.S.); [EMAIL_ADDRESS] (M.K. ); [EMAIL_ADDRESS] (S.Y. ); [EMAIL_ADDRESS] (D.V.) [PERSON]  
2 University of Lille, CNRS, UMR 8523--PhLAM--Physique des Lasers Atomes et Molecules, 59650 Lille, France 22 University of Lille, CNRS, UMR 8523--PhLAM--Physique des Lasers Atomes et Molecules, 59650 Lille, France 22 University of Lille, CNRS, UMR 8523--PhLAM--Physique des Lasers Atomes et Molecules, 59650 Lille, France 22 University of Lille, CNRS, UMR 8523--PhLAM--Physique des Lasers Atomes et Molecules, 59650 Lille, France 2 University of Lille, CNRS,(EDFA) are always limited by a noise figure of at least 3 dB [1; 2; 3; 4]. This attribute of noiseless amplification of PSAs have attracted recent attention in terms of their potential applications in a variety of domains such as microwave photonics, all optical signal processing, long-haul optical communication, free-space satellite communication, quantum technologies, etc. to name a few [5; 6; 7; 8; 9; 10]. Recent progresses in the field have led to exploration of unconventional fiber designs in terms of the longitudinal variation of the fiber dispersion along the fiber length for system performance enhancements in diverse fiber-optic application platforms [11; 12; 13; 14]. In this article, we aim to provide a comprehensive investigation of the utility of employing a nonlinear fiber with longitudinally varying dispersion, aimed at developing a high-performance PSA system with different pump configurations. PSAs demand the use of a highly nonlinear medium. In Table 1 we provide a short list of different commonly used nonlinear media employed in various applications. When compared to other nonlinear media, DOFs, that are fibers with an oscillating longitudinal dispersion profile, are potential candidates for accessing a larger nonlinearity in the system [15]. This is possible because of large pump powers could be launched into DOFs owing to a potentially lower stimulated Brillouin scattering (SBS) compared to a conventional HNLF, as we will discuss later in detail. Typically PSAs are operated in a single or dual pump configuration.