This paper presents how photonics associated with new arising detection technologies is able to provide fully integrated instrument for coherent beam combination applied to astrophysical interferometry. The feasibility and operation of on-chip coherent beam combiners has been already demonstrated using various interferometric combination schemes. More recently we proposed a new detection principle aimed at directly sampling and extracting the spectral information of an input signal together with its flux level measurement. The so-called SWIFTS demonstrated concept that stands for Stationary-Wave Integrated Fourier Transform Spectrometer, provides full spectral and spatial information recorded simultaneously thanks to a motionless detecting device.
Due to some newly available detection principles considered for the implementation of the SWIFTS concept, some technologies can even provide photo-counting operation that brought a significant extension of the interferometry domain of investigation in astrophysics . The proposed concept is applicable to most of the interferometric instrumental modes including fringe tracking, fast and sensitive detection, Fourier spectral reconstruction and also to manage a large number of incoming beams. The paper presents three practical implementations, two dealing with pair-wise integrated optics beam combinations and the third one with an all-in-one 8 beam combination. In all cases the principles turned into a pair wise baseline coding after proper data processing.
SuMAC: On-sky demonstration of multi-pixel on-chip millimeter-wave spectroscopy at the Large Millimeter Telescope
Cardiff University（卡迪夫大学）；Jet Propulsion Laboratory（喷气推进实验室）；Dalhousie University（达尔豪斯大学）；Instituto Nacional de Astrofísica, Óptica y Electrónica（国家天体物理学、光学和电子学研究所）；California Institute of Technology（加州理工学院）；Boston University（波士顿大学）；The University of Chicago（芝加哥大学）；University of California Santa Barbara（加州大学圣巴巴拉分校）
Spectral characterization and performance of SPT-SLIM on-chip filterbank spectrometers
University of Chicago（芝加哥大学）；Kavli Institute for Cosmological Physics, University of Chicago（芝加哥大学卡弗里宇宙物理研究所）；Cardiff University（卡迪夫大学）；McGill University（麦吉尔大学）；Fermi National Accelerator Laboratory（费米国家加速器实验室）；Enrico Fermi Institute, University of Chicago（芝加哥大学恩里科·费米研究所）；Argonne National Laboratory（阿贡国家实验室）；Boston University（波士顿大学）
Enhanced electron-beam lithography to reduce the frequency scatter of 200-400 GHz superconducting microstrip resonators for on-chip filterbank spectrometers
Delft University of Technology（代尔夫特理工大学）；SRON — Space Research Organisation Netherlands（荷兰空间研究所）；Universität zu Köln（科隆大学）
