Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Integrated optics for astronomical interferometry. III. Optical validation of a planar optics two-telescope beam combiner

Not Accessible

Your library or personal account may give you access

Abstract

The optical characterization of a fiber-connected planar optics beam combiner dedicated to astronomical interferometry for two telescopes is presented. The beam combiner, fully integrated on a single 5 mm × 40 mm glass chip, is tested as the central part of an astronomical instrument. The single-mode waveguides are made by silver-ion-exchange technology upon glass substrates and provide spatial filtering, which improves the visibility measurement accuracy by selecting only the fundamental mode of the beams at the telescope focal plane. A global optical throughput of 43% is measured, and the sources of losses are identified and examined in detail. Solutions for improving this throughput are proposed. High and stable contrasts are obtained with a 1.55-µm laser diode (≳96%) and with a white-light source (∼92%) in the astronomical H filter (1.43 µm; 1.77 µm). The need for accurate control of differential instrumental polarization is demonstrated. In this context the intrinsic polarization-maintaining property of the planar optics component is characterized. This validation of the important potential uses of integrated planar optics should be valuable for future design of optical telescope arrays.

© 2000 Optical Society of America

Full Article  |  PDF Article
More Like This
Ultrafast laser inscription in ZBLAN integrated optics chips for mid-IR beam combination in astronomical interferometry

Jan Tepper, Lucas Labadie, Simon Gross, Alexander Arriola, Stefano Minardi, Romina Diener, and Michael J. Withford
Opt. Express 25(17) 20642-20653 (2017)

Chromatic response of a four-telescope integrated-optics discrete beam combiner at the astronomical L band

Abani Shankar Nayak, Thomas Poletti, Tarun Kumar Sharma, Kalaga Madhav, Ettore Pedretti, Lucas Labadie, and Martin M. Roth
Opt. Express 28(23) 34346-34361 (2020)

3D-integrated optics component for astronomical spectro-interferometry

Allar Saviauk, Stefano Minardi, Felix Dreisow, Stefan Nolte, and Thomas Pertsch
Appl. Opt. 52(19) 4556-4565 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved