Interferometric and Multiband optical Parametric Amplifiers for Communications (IMPAC)

电信支撑着现代生活的许多部门，尤其是不断增长的数字经济。电信传输容量的快速增长以及每比特成本的显著降低使得新技术和商业模式的发展成为可能，这些技术和商业模式彻底改变了人们的日常生活。电信骨干是由光纤通信构成的，它可以在地球上几乎任何一点之间传输大量数据。在过去的几十年里，光纤通信传输能力的倍增主要是由几项技术突破提供的，例如使用掺铒光纤放大器或相干接收器。在光纤通信中提供革命性转变的下一个重大进步可能是利用现代光通信光纤中可用的全部带宽的多频带传输。多波段光通信有潜力在不需要部署新的传输光纤的情况下将传输容量提高五倍，从而大大降低了成本。然而，采用多波段传输的关键挑战是缺乏合适的光放大器，能够在感兴趣的波长范围内同时跨多个波段工作。该项目名为“用于通信的干涉测量和多波段光学参数放大器”（IMPAC），将为光纤参数放大器（FOPA）提供必要的关键进展，使edfa等效信号能够在多波段通信（O、E、S、C、L）的所有波长范围内放大，带宽超过100纳米，可能高达200纳米。在IMPAC中，我将：创建一个完全自主和鲁棒的极化不敏感（PI） FOPA，具有高净增益bbb20db和低极化相关增益<0.5dB，带宽>100nm。先锋干涉fopa拒绝不需要的FWM产品，使可用增益带宽加倍或“消除”非线性串扰，抑制~20dB.3。显著地（以10倍的速度）降低了由于受激布里渊散射减缓而产生的信号噪声，同时允许至少~100nm的宽FOPA增益带宽。先锋PI-FOPA具有跨O/E/S波段的增益可调，用于信号和泵放大，因此在SSMF.5中创建了第一个分布式PI-FOPA。结合增益带宽、低噪声系数、抑制不必要的FWM和SBS缓解方面的项目成果，设计“下一代”PI-FOPA，以促进在高达200nm的带宽上运行，性能优于商用edfa。

Telecommunications underpin many sectors of modern life and especially the growing digital economy. The rapid growth of the telecommunications transmission capacity along with the significant reduction of the cost per bit has enabled development of new technologies and business models which revolutionised everyday life. The telecommunications backbone is formed by fibre optic communications enabling transmission of vast amount of data between virtually any points on the Earth. Multiplication of the fibre optic communications transmission capacity in the past decades have been provided mostly by several technological breakthroughs, such as employment of Erbium-doped fibre amplifiers or coherent receivers. The next significant advancement providing a revolutionary shift in fibre optic communications could be employment of multi-band transmission utilising the whole bandwidth available in modern optical communication fibres. Multi-band optical communications have potential to five-fold the transmission capacity without need to deploy new transmission fibres thus significantly reducing the costs. However, the key challenge for employment of multi-band transmission is lack of suitable optical amplifiers able to operate in the wavelength bands of interest and across several bands simultaneously.This project, Interferometric and Multiband optical Parametric Amplifiers for Communications (IMPAC), will provide the key advances necessary for fibre optic parametric amplifiers (FOPA) to enable EDFA-equivalent signal amplification in all wavelength bands appealing for multi-band communications (O, E, S, C, L) and with bandwidth in excess of 100 nm, potentially up to 200 nm. In IMPAC I will:1. Create a fully autonomous and robust polarisation-insensitive (PI) FOPA with high net gain >20dB and low polarisation-dependent gain <0.5dB across a record wide bandwidth >100nm.2. Pioneer interferometric FOPAs rejecting unwanted FWM products to double available gain bandwidth or to 'eliminate' nonlinear crosstalk with suppression of ~20dB.3. Significantly (by a factor of 10) reduce the signal noise attributed to the stimulated Brillouin scattering mitigation, whilst allowing for a wide FOPA gain bandwidth of at least ~100nm.4. Pioneer a PI-FOPA with gain tuneable across O/E/S bands for signal and pump amplification, and consequently create the first-ever distributed PI-FOPA in SSMF.5. Devise the 'next generation' PI-FOPA combining the project achievements in terms of gain bandwidth, low noise figure, rejection of unwanted FWM and SBS mitigation to facilitate operation across a bandwidth up to 200nm with performance superior to commercial EDFAs.