We numerically investigate a Raman soliton source cascaded by a fluorotellurite fiber and a chalcogenide fiber. By using a 2.8 μm fiber laser with a pulse width of 137 fs as the pump light, widely tunable Raman solitons spanning from 2.8 to 8.1μm are observed in the nonlinear media cascaded by 5 cm fluorotellurite fiber and 10 cm chalcogenide fiber. The pulse width of the red-shift soliton at 8.1 μm is 132 fs. For the first time we propose the idea of coupling the tellurite fiber and chalcogenide fiber to further enhance the SSFS effect in mid infrared region (MIR). Our simulated results show the possibility of generating long wavelength Raman soliton use a source cascaded by fluorotellurite fiber and chalcogenide fiber
We demonstrated a three-stage cascaded Raman soliton frequency shift structure in mid-infrared region (MIR) through numerical simulation. By cascading germania-core fiber, Er3+ ZBLAN fiber amplifier with an indium fluoride or (InF3) or TeO2-Bi2O3-ZnO-Na2O (TBZN) fiber, we achieved 2-4.75 μm and 2-5.5 μm tunable range respectively. When the same tunable range was achieved, both the energy and conversion efficiency of Raman solitons in the designed three stage cascaded structure were greatly improved, comparing with structure with single Raman shifter fiber. Our work could provide an effective way to improve the energy and conversion efficiency of Raman solitons in the commonly used single Raman frequency shift structure.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.