In this contribution, we report a home-made single polarization fiber using pit-in-jacket method. The single polarization fiber is realized by using PANDA structure. A piece of the single polarization fiber with the length of 5m is used to test the polarization window and extinction ratio. The central wavelength is 1064nm. This fiber can keep single-polarization transmission in 140 nm bandwidth range. Moreover, it also shows high extinction ratio of 40 dB. The experimental result indicates that the performance of the domestic SPF is close to the imported fiber.
In this contribution, we report a home-made pump-gain integrated fiber (PGIF) based on side-pumped fiber laser scheme. PGIF with a 60cm coiling diameter is characterized in a bidirectional amplifier configuration, 1.6kW laser output with excellent beam quality (M2=1.3) is obtained. The result indicates that PGIF has great potential in power scaling of high power fiber lasers.
In this contribution, we fabricate a kind of part-doped yb fiber with 30/400μm core/cladding diameter by Modified Chemical Vapor Deposition (MCVD) in conjunction with chelate gas deposition technique. The yb ions doping diameter is 20μm in the fiber core and the core numerical aperture (NA) is 0.061. The fiber with a 50cm coiling diameter is characterized in a master oscillator power amplifier configuration, 2.42kW laser output with an excellent beam quality factor (M2~1.32) is experimentally obtained. For our best known, it is the first time to fabricate part-doped yb fibers by MCVD with chelate gas deposition method.
KEYWORDS: Optical pumping, Fiber lasers, High power fiber lasers, Coating, Optical amplifiers, Signal attenuation, Fusion splicing, Fiber amplifiers, High power fiber amplifiers, Optical engineering
We investigate a (2+1)×1 side-pumping combiner numerically and experimentally for high-power fiber laser based on tandem pumping for the first time. The influence of taper ratio and launch mode on the 1018-nm pump coupling efficiency and the leakage power into the coating of the signal fiber (LPC) is analyzed numerically. A side-pumping combiner is developed successfully by tapered-fused splicing technique based on the numerical analysis, consisting of two pump fibers (220/242 μm, NA=0.22) and a signal fiber (40/400 μm, NA=0.06/0.46). The total 1018-nm pump efficiency of the combiner is 98.1%, and the signal light insertion loss is <3%. The results show that, compared with laser diodes pumping, the combiner appears to have a better LPC performance and power handling capability when using 1018-nm fiber as the pump light. Meanwhile, an all-fiber MOPA laser based on tandem pumping with 1080-nm output of 2533 W and the slope efficiency of 82.8% is achieved based on the home-made combiner.
This paper studies and fabricates an integrated double-clad photonic crystal fiber amplifier, which overcomes the shortcomings of space application and makes full use of excellent property of double-clad photonic crystal fiber. In the experiment, the (6 + 1) × 1 end-pump coupler with DC-PCF is fabricated. The six pump fibers are fabricated with 105 / 125μm (NA = 0.22) multi-mode fiber. The signal fiber is made of ordinary single-mode fiber SMF-28. Then we spliced the tapered fiber bundle to photonic crystal fiber. At last, we produce double-clad photonic crystal fiber with an end-cap that are able to withstand high average power and protect the system. We have fabricated an integrated Yb-double-clad photonic crystal fiber amplifier.
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.