Initial measurements of focal ratio degradation in ZBLAN fluoride fibers for K band spectroscopy

Jacob Pember; Simon Ellis; Tayyaba Zafar

doi:10.1117/12.2561967

13 December 2020 Initial measurements of focal ratio degradation in ZBLAN fluoride fibers for K band spectroscopy

Jacob Pember, Simon Ellis, Tayyaba Zafar

Proceedings Volume 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV; 1145121 (2020) https://doi.org/10.1117/12.2561967
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The applicability of optical fibers to astronomical spectroscopy in the infrared depends heavily on the fiber's wavelength-dependent transmission properties. Standard silica fibers typically allow transmission at wavelengths as red as 1550nm but absorb strongly at redder wavelengths, limiting their use for the infrared instruments. Fibers using fluoride glasses transmit redward of this range, opening up the infrared K band, corresponding to a window of transmission in the Earth's atmosphere. In order to further assess their feasibility for astronomical instrumentation, the characteristics of these fibers must be well-known. Here initial measurements and analysis of the focal ratio degradation (FRD) of two types of fluoride fibers are reported.

Citation Download Citation

Jacob Pember, Simon Ellis, and Tayyaba Zafar "Initial measurements of focal ratio degradation in ZBLAN fluoride fibers for K band spectroscopy", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 1145121 (13 December 2020); https://doi.org/10.1117/12.2561967

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available