Single-mode large-mode area fiber amplifier with higher-order mode suppression and distributed passband filtering of ASE and SRS

2010 ◽  
Author(s):  
Thomas Tanggaard Alkeskjold
Keyword(s):  
Single Mode ◽  
Fiber Amplifier ◽  
Higher Order ◽  
Order Mode ◽  
Large Mode Area ◽  
Mode Suppression ◽  
Mode Area ◽  
Higher Order Mode

Experimental verification of higher-order mode suppression in a bent large-mode-area multi-cladding fiber

2010 ◽  
Author(s):  
Kentaro Ichii ◽  
Kunimasa Saitoh ◽  
Yasuko Sugimoto ◽  
Shoji Tanigawa ◽  
Shoichiro Matsuo ◽  
...  
Keyword(s):  
Experimental Verification ◽  
Higher Order ◽  
Order Mode ◽  
Large Mode Area ◽  
Mode Suppression ◽  
Mode Area ◽  
Higher Order Mode

scholarly journals Comparison of higher-order mode suppression and Q-switched laser performance in thulium-doped large mode area and photonic crystal fibers

2012 ◽  
Vol 20 (22) ◽  
pp. 24295 ◽  
Author(s):  
Pankaj Kadwani ◽  
Clemence Jollivet ◽  
R. Andrew Sims ◽  
Axel Schülzgen ◽  
Lawrence Shah ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Higher Order ◽  
Order Mode ◽  
Large Mode Area ◽  
Laser Performance ◽  
Mode Suppression ◽  
Crystal Fibers ◽  
Mode Area ◽  
Higher Order Mode

scholarly journals Higher-Order Mode Suppression in Antiresonant Nodeless Hollow-Core Fibers

Micromachines ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 128 ◽  
Author(s):  
Aichen Ge ◽  
Fanchao Meng ◽  
Yanfeng Li ◽  
Bowen Liu ◽  
Minglie Hu
Keyword(s):  
Single Mode ◽  
Ring Structure ◽  
Higher Order ◽  
Hollow Core ◽  
Order Mode ◽  
High Loss ◽  
Mode Suppression ◽  
Single Ring ◽  
Nested Structure ◽  
Higher Order Mode

Negative curvature hollow-core fibers (NC-HCFs) are useful as gas sensors. We numerically analyze the single-mode performance of NC-HCFs. Both single-ring NC-HCFs and nested antiresonant fibers (NANFs) are investigated. When the size of the cladding tubes is properly designed, higher-order modes (HOMs) in the fiber core can be coupled with the cladding modes effectively and form high-loss supermodes. For the single-ring structure, we propose a novel NC-HCF with hybrid cladding tubes to enable suppression of the first two HOMs in the core simultaneously. For the nested structure, we find that cascaded coupling is necessary to maximize the loss of the HOMs in NANFs, and, as a result, NANFs with five nested tubes have an advantage in single-mode guidance performance. Moreover, a novel NANF with hybrid extended cladding tubes is proposed. In this kind of NANF, higher-order mode extinction ratios (HOMERs) of 105 and even 106 are obtained for the LP11 and LP21 modes, respectively, and a similar level of 105 for the LP02 modes. Good single-mode performance is maintained within a broad wavelength range. In addition, the loss of the LP01 modes in this kind of NANF is as low as 3.90 × 10−4 dB/m.

Simple suppression technique for higher-order mode amplification in bent large mode area triple-cladding fibers

2010 ◽  
Author(s):  
Kunimasa Saitoh ◽  
Kentaro Ichii ◽  
Katsuhiro Takenaga ◽  
Shoji Tanigawa ◽  
Shoichiro Matsuo ◽  
...  
Keyword(s):  
Higher Order ◽  
Order Mode ◽  
Large Mode Area ◽  
Suppression Technique ◽  
Mode Area ◽  
Higher Order Mode

Achieving Gaussian outputs from large-mode-area higher-order-mode fibers

2007 ◽  
Vol 46 (22) ◽  
pp. 5147 ◽  
Author(s):  
Norbert Lindlein ◽  
Gerd Leuchs ◽  
Siddharth Ramachandran
Keyword(s):  
Higher Order ◽  
Order Mode ◽  
Large Mode Area ◽  
Mode Area ◽  
Higher Order Mode

Natural bend-distortion immunity of higher-order-mode large-mode-area fibers

2007 ◽  
Vol 32 (7) ◽  
pp. 748 ◽  
Author(s):  
John M. Fini ◽  
Siddharth Ramachandran
Keyword(s):  
Higher Order ◽  
Order Mode ◽  
Large Mode Area ◽  
Mode Area ◽  
Higher Order Mode
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