Share Email Print

Proceedings Paper

New type of single-object optical fiber coupler
Author(s): Zhao Peiqian; Junhua Pan; Shiyang Jiang; Shi-jie Yang
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this paper, a new type of astronomical optical fiber coupler is described which couples the Cassegrain focus with f-ratio ff16 of the 6Ocm reflective telescope at Purple Mt.Observatory (P?) and the entrance slit of a prism spectrograph located :1n the lab under the observing floor. The single multi-mode, gradient index optical fiber has a length of about 25m, core diameter of 5Omicron, effective NA of 0.2. At both ends of the fiber, GRIN rod lenses with diameter of 1mm are used as f-ratio transverter. Techniques, e.g. the alegnment between fiber and GRIN rod lenses and guiding, are given in detail. Primary experimental observation with this coupler has been carried out and spectra of Lyr are obtained.

Paper Details

Date Published: 1 July 1990
PDF: 7 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19138
Show Author Affiliations
Zhao Peiqian, Nanjing Astronomical Instruments Factory (France)
Junhua Pan, Nanjing Astronomical Instruments Factory (China)
Shiyang Jiang, Beijing Observatory (China)
Shi-jie Yang, Purple Mt. Observatory (China)

Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

© SPIE. Terms of Use
Back to Top