Splicing Hollow-Core Fiber with Standard Glass-Core Fiber with Ultralow Back-Reflection and Low Coupling Loss
Sign Up to like & getrecommendations! Published in 2024 at "ACS Photonics"
DOI: 10.1021/acsphotonics.4c00677
Abstract: A main, yet-unsolved challenge in splicing hollow-core fiber (HCF) into standard single-mode fiber (SMF) systems lies in managing the strong Fresnel back-reflection that occurs when the light travels from the empty core of the HCF… read more here.
Keywords: back reflection; loss; core; core fiber ... See more keywords
Removal of back-reflection noise at ultrathin imaging probes by the single-core illumination and wide-field detection
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-07024-y
Abstract: Thin waveguides such as graded-index lenses and fiber bundles are often used as imaging probes for high-resolution endomicroscopes. However, strong back-reflection from the end surfaces of the probes makes it difficult for them to resolve… read more here.
Keywords: detection; illumination; imaging probes; back reflection ... See more keywords
Grating Coupler With Reduced Back Reflection Using λ/4 Offset at Its Grating Sub-Teeth
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2889863
Abstract: We demonstrate a grating coupler with reduced back reflection on silicon-on-insulator (SOI) platform. Each grating tooth of the grating coupler is uniformly divided into multiple sub-teeth with λ/4 offset between two adjacent sub-teeth, reducing the… read more here.
Keywords: back reflection; sub teeth; coupler; grating coupler ... See more keywords
Silicon Subwavelength Grating Coupler With Ultra-High Reproducibility, Ultra-Wide Bandwidth, and Ultra-Low Back Reflection
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2024.3393011
Abstract: Subwavelength grating (SWG) couplers have attracted great attention in silicon photonics due to the flexible capacity of index tailoring for light coupling. With the intrinsic high refractive index (RI), silicon SWG couplers usually suffer from… read more here.
Keywords: back reflection; swg; low back; silicon ... See more keywords
High-efficiency Si3N4 grating couplers with hybrid Al2O3/metal-mirror structure for back-reflection suppression
Sign Up to like & getrecommendations! Published in 2025 at "Optical Engineering"
DOI: 10.1117/1.oe.64.11.117104
Abstract: Abstract. We present a compact high-performance one-dimensional grating coupler based on silicon nitride, which is optimized via superior mode matching method with chirping and engineering on the period and anti-reflection of the grating. A tailored… read more here.
Keywords: back reflection; efficiency; metal; reflection ... See more keywords
Low loss and broadband low back-reflection interconnection between a hollow-core and standard single-mode fiber.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.460635
Abstract: We report simultaneous low coupling loss (below 0.2 dB at 1550 nm) and low back-reflection (below -60 dB in the 1200-1600 nm range) between a hollow core fiber and standard single mode optical fiber obtained through the combination of… read more here.
Keywords: back reflection; loss; hollow core; low back ... See more keywords