Demonstration of amplified data transmission at 2 mu m in a low-loss wide bandwidth hollow core photonic bandgap fiber (original) (raw)
Related papers
2012
Hollow core-photonic bandgap fibers (HC-PBGFs) have many intriguing properties including ultralow nonlinearity and low latency relative to conventional (solid) forms of optical fiber. As a consequence they are of great interest as a potential transmission medium in next-generation optical communication systems. However, in order to have any chance of competing with conventional transmission fibers, the possibility of achieving low loss over a suitably extended bandwidth needs to be demonstrated.
Journal of Lightwave Technology, 2016
The low intrinsic nonlinearity and low signal latency characteristic of Hollow Core Photonic Bandgap Fibers (HC-PBGFs) have fueled strong interest for data transmission applications. Whereas most research to date has looked at improving the optical performance of HC-PBGFs (e.g., reducing the loss, increasing the transmission bandwidth and achieving well-tempered modal properties through the suppression of surface mode resonances). In this study, we address the challenging problem of scaling up the fabrication of these fibers to multi-kilometer lengthsan indispensable step to prove this fiber technology as viable. We report the fabrication of low loss, wide bandwidth HC-PBGFs operating both in the conventional telecoms window (1.55 μm) and in the predicted region of minimum loss (2 μm), in lengths that substantially exceed the state of the art. At 2 μm, we obtained a 3.85 km long fiber with 3 dB/km loss and >160 nm wide 3 dB bandwidth. Additionally, we report an HC-PBGF operating at 1.55 μm with a length of just over 11 km, transmission bandwidth in excess of 200 nm and a longitudinally uniform loss of 5 dB/km, measured via cutback and an integrated scattering method. We used the latter fiber to demonstrate error-free, low-latency, direct-detection 10 Gb/s transmission across the entire C-Band as well as 20 Gb/s quadrature phase shift keyed transmission. These represent the first demonstrations of data transmission over a length of HC-PBGF exceeding 10 km.
Hollow Core Photonic Bandgap fibers for Telecommunications: Opportunities and Potential Issues
2012
The continuing exponential rise in demand for communications bandwidth provides a pressing need to find new solutions for increasing the overall capacity of optical fiber links. Coherent systems based on conventional fiber technology are already operating close to fundamental capacity and fiber loss limits. Consequently, radical new solutions including various forms of spatial division multiplexing (SDM) are currently under heavy investigation.
Hollow-core photonic bandgap fibers: technology and applications
Since the early conceptual and practical demonstrations in the late 1990s, Hollow-Core Photonic Band Gap Fibres (HC-PBGFs) have attracted huge interest by virtue of their promise to deliver a unique range of optical properties that are simply not possible in conventional fibre types. HC-PBGFs have the potential to overcome some of the fundamental limitations of solid fibres promising, for example, reduced transmission loss, lower nonlinearity, higher damage thresholds and lower latency, amongst others. They also provide a unique medium for a range of light: matter interactions of various forms, particularly for gaseous media. In this paper we review the current status of the field, including the latest developments in the understanding of the basic guidance mechanisms in these fibres and the unique properties they can exhibit. We also review the latest advances in terms of fibre fabrication and characterisation, before describing some of the most important applications of the technology, focusing in particular on their use in gas-based fibre optics and in optical communications.
Mode Multiplexing at 2×20Gbps over 19-cell Hollow-Core Photonic Band Gap Fibre
National Fiber Optic Engineers Conference, 2012
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