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Proceedings Paper

Multi-fibers connectors systems for FOCCoS-PFS-Subaru
Author(s): Antonio Cesar de Oliveira; Ligia Souza de Oliveira; Lucas Souza Marrara; Leandro Henrique dos Santos; Marcio Vital de Arruda; Jesulino Bispo dos Santos; Décio Ferreira; Josimar Aparecido Rosa; Rodrigo de Paiva Vilaça; Laerte Sodré Jr.; Claudia Mendes de Oliveira; James E. Gunn
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Paper Abstract

The Fiber Optical Cable and Connector System (FOCCoS), provides optical connection between 2400 positioners and a set of spectrographs through optical fibers cables as part of PFS instrument for Subaru telescope. The optical fiber cable will be segmented in 3 parts along the route, cable A, cable B and cable C, connected by a set of multi-fiber connectors. The company USCONEC produces the multi-fiber connector under study. The USCONEC 32F model can connect 32 optical fibers in a 4 x 8 matrix arrangement. The ferrules are made of a durable composite, Polyphenylene Sulfide (PPS) based thermoplastic. The connections are held in place by a push-on/pull-off latch, and the connector can also be distinguished by a pair of metal guide pins that protrude from the front of the connector. Two fibers per connector will be used for monitoring the connection procedure. It was found to be easy to polish and it is small enough to be mounted in groups. Highly multiplexed instruments like PFS require a fiber connector system that can deliver excellent optical performance and reliability. PFS requires two different types of structures to organize the connectors. The Tower Connector system, with 80 multi-fiber connectors, will be a group of connectors for connecting cable B (Telescope Structure) with cable C (Positioners Plate). The Gang Connector system is a group of 8 gang connectors, each one with 12 multi-fibers connectors, for connecting cable B (Telescope Structure) with cable A (Spectrograph). The bench tests with these connector systems and the chosen fibers should measure the throughput of light and the stability after many connections and disconnections. In this paper we describe tests and procedures to evaluate the throughput and FRD increment. The lifetime of the ferrules is also in evaluation.

Paper Details

Date Published: 18 July 2014
PDF: 9 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 915160 (18 July 2014); doi: 10.1117/12.2055888
Show Author Affiliations
Antonio Cesar de Oliveira, Lab. Nacional de Astrofísica (Brazil)
Ligia Souza de Oliveira, Lab. Nacional de Astrofísica (Brazil)
Lucas Souza Marrara, Oliveira Instrumentação Óptica Ltda. (Brazil)
Leandro Henrique dos Santos, Lab. Nacional de Astrofísica (Brazil)
Marcio Vital de Arruda, Lab. Nacional de Astrofísica (Brazil)
Jesulino Bispo dos Santos, Lab. Nacional de Astrofísica (Brazil)
Décio Ferreira, Lab. Nacional de Astrofísica (Brazil)
Josimar Aparecido Rosa, Lab. Nacional de Astrofísica (Brazil)
Rodrigo de Paiva Vilaça, Lab. Nacional de Astrofísica (Brazil)
Laerte Sodré Jr., Univ. de São Paulo (Brazil)
Claudia Mendes de Oliveira, Univ. de São Paulo (Brazil)
James E. Gunn, Princeton Univ. (United States)

Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)

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