High-birefringence chalcogenide all-solid hybrid microstructured optical fiber and broad mid-infrared parametric gain bandwidth

Tong Hoang Tuan; Takenobu Suzuki; Yasutake Ohishi

doi:10.1117/12.2578067

5 March 2021 High-birefringence chalcogenide all-solid hybrid microstructured optical fiber and broad mid-infrared parametric gain bandwidth

Tong Hoang Tuan, Takenobu Suzuki, Yasutake Ohishi

Author Affiliations +

Proceedings Volume 11682, Optical Components and Materials XVIII; 116821G (2021) https://doi.org/10.1117/12.2578067
Event: SPIE OPTO, 2021, Online Only

Conference Poster

Abstract

Fiber optical parametric amplifiers (FOPAs) have attracted much attention than conventional optical amplifiers due to their wider operating wavelength ranges. By expanding the FOPA gain bandwidth towards the mid-infrared region, which can only be obtained by using highly nonlinear chalcogenide fibers, more interesting applications in spectroscopy, sensing, biology and metrology can be realized. Chalcogenide hybrid microstructured optical fibers (chalco HMOFs) with buffer layer demonstrated by our group showed good FOPA performance from 3 to 10 μm. However, their tiny and symmetric structures of air holes are difficult to fabricate. To overcome, chalcogenide all solid HMOFs (chalco ASHMOFs) with 6 low-index rods in the cladding were studied in this work using As₂Se₃, AsSe₂ and As₂S₅ glasses. Moreover, to obtain high birefringence which is necessary to minimize detrimental effects such as, polarization mode dispersion, polarization noise and instability and polarization-maintaining, the symmetry of the fiber was broken by enlarging a pair of solid rods. Numerical analyses show that chalco ASHMOFs can provide near-zero and flattened chromatic dispersion (<10 ps/km.nm) from 5 to about 12 μm and the phase birefringence can be as high as 4.4 x10^-3 at 14 μm. When a pump of 5 W at 4890 nm is coupled to a 3-cm-long section of the chalco ASHMOF, 16-dB signal gain can be obtained from about 3 to 12 μm which is equal to 9000-nm FOPA gain bandwidth in the mid-infrared. Compared to the 6500-nm gain bandwidth obtained from the previous chalco HMOF, novel chalco ASHMOFs are very potential candidates of FOPA devices in the mid-infrared region.

Conference Presentation

Citation Download Citation

Tong Hoang Tuan, Takenobu Suzuki, and Yasutake Ohishi "High-birefringence chalcogenide all-solid hybrid microstructured optical fiber and broad mid-infrared parametric gain bandwidth", Proc. SPIE 11682, Optical Components and Materials XVIII, 116821G (5 March 2021); https://doi.org/10.1117/12.2578067

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