A Caltech Library Service

Utilizing active single-mode fiber injection for speckle nulling in exoplanet characterization

Klimovich, N. and Xin, Y. and Mawet, D. and Ruane, G. and Delorme, J.-R. and Xuan, W. and Echeverri, D. and Randolph, M. and Fucik, J. and Wallace, J. K. and Wang, J. and Vasisht, G. and Dekany, R. and Mennesson, B. and Choquet, É. and Serabyn, E. (2017) Utilizing active single-mode fiber injection for speckle nulling in exoplanet characterization. In: Techniques and Instrumentation for Detection of Exoplanets VIII. Proceedings of SPIE. No.10400. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 104000Y.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Despite recent advances in high-contrast imaging techniques, high resolution spectroscopy for characterization of exoplanet atmospheres is still limited by our ability to suppress residual starlight speckles at the planet’s location. We have demonstrated a new concept for speckle nulling by injecting directly imaged planet light into a single-mode fiber, linking a high-contrast adaptively-corrected coronagraph to a high-resolution spectrograph (diffraction-limited or not). The restrictions on the incident electric field that will couple into the single-mode fiber give the adaptive optics system additional degrees of freedom to suppress the speckle noise on top of destructive interference. We are able to achieve a starlight suppression gains that are an order of magnitude better than conventional techniques in broadband light with minimal planet throughput losses.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Mawet, D.0000-0002-8895-4735
Ruane, G.0000-0003-4769-1665
Xuan, W.0000-0002-6618-1137
Echeverri, D.0000-0002-1583-2040
Wang, J.0000-0002-4361-8885
Vasisht, G.0000-0002-1871-6264
Mennesson, B.0000-0003-4205-4800
Choquet, É.0000-0002-9173-0740
Additional Information:© 2017 SPIE. The authors would like to acknowledge the financial support of the Heising-Simons foundation.
Group:Astronomy Department
Funding AgencyGrant Number
Heising-Simons FoundationUNSPECIFIED
Subject Keywords:vortex coronagraph, fiber injection unit, speckle nulling, broadband, spectrograph, exoplanet characterization, instrumentation
Series Name:Proceedings of SPIE
Issue or Number:10400
Record Number:CaltechAUTHORS:20180216-132039857
Persistent URL:
Official Citation:N. Klimovich, Y. Xin, D. Mawet, G. Ruane, J.-R. Delorme, W. Xuan, D. Echeverri, M. Randolph, J. Fucik, J. K. Wallace, J. Wang, G. Vasisht, R. Dekany, B. Mennesson, E. Choquet, E. Serabyn, "Utilizing active single-mode fiber injection for speckle nulling in exoplanet characterization", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000Y (1 September 2017); doi: 10.1117/12.2275173;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84869
Deposited By: Tony Diaz
Deposited On:20 Feb 2018 21:53
Last Modified:15 Nov 2021 20:23

Repository Staff Only: item control page