SATURABLE ABSORBER BASED ON A CARBON NANOTUBE COATED FIBER COUPLER
P. A. Itrin1, V. A. Ribenek1, Yu. A. Shaman2, A. V. Sysa2, D. A. Korobko1, S. V. Vasin3, A. A. Fotiadi1
1Ulyanovsk State University, Ulyanovsk, Russia
2Scientific-Manufacturing Complex "Technological Centre,", Moscow, Russia
3Ulyanovsk Branch of the Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Ulyanovsk, Russia
Keywords: fiber lasers, mode locking, saturable absorber, fiber coupler, fiber taper, carbon nanotubes
Abstract
A new type of an element providing mode synchronization in a fiber laser source of ultrashort pulses is proposed. This element is a pair of coupled microfiber tapers coated with a layer of carbon nanotubes and combines the functions of a saturable absorber and an output coupler. The proposed version of manufacturing a saturable absorber is technologically simple and can be used in almost any optical laboratory. Based on the manufactured sample of the absorber-coupler and active fibers doped with erbium, a ring fiber laser is manufactured, in which mode synchronization with the generation of picosecond soliton pulses is experimentally demonstrated.
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