Power series solution to the longitudinal modes of LD-pumped uniform fiber Bragg grating laser at threshold

• Published in: Optics communications Vol. 241; no. 4-6; pp. 475 - 479
• Main Authors: Park, Dongwook, Hwang, Joonhwan
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 16.11.2004; Elsevier Science
• Subjects: Applied sciences; Circuit properties; Coupled-mode theory; Diode-pumped lasers; Distributed-feedback lasers; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Fiber grating; Fiber lasers; Fundamental areas of phenomenology (including applications); Integrated optics. Optical fibers and wave guides; Laser physics; Lasers; LD-pumped laser; Optical and optoelectronic circuits; Optics; Physics; Power series solution; Power series solution; 42.55.Xi; Distributed-feedback lasers; Laser physics; Coupled-mode theory; 42.55.Wd; Fiber grating; LD-pumped laser; 85.60.Bt; Bragg gratings; Side pumping; Laser pumping; Theoretical study; Coupled modes; Laser diodes; Grating in fiber; Power series; Distributed feedback lasers; Fiber lasers
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2004.07.030

Longitudinal modes of a laser-diode-pumped uniform fiber Bragg grating laser at threshold are analyzed by employing a power series solution to the coupled-mode equations, wherein an exponentially decreasing modal gain profile is assumed. Comparisons made with the uniform gain results indicate that the effects of nonuniform gain on the lasing mode characteristics due to side pumping configuration are greatly tempered by the distributed-feedback mechanism of the grating laser.