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Proceedings Paper

A Two Wavelength Fiber Optic Multiplexing System For Analog Data Links
Author(s): J. C. Williams; C . L. Kozikowski
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Paper Abstract

A codirectional two-channel wavelength division multiplexing subsystem using lensed dichroic multiplex and demultiplex couplers was designed, fabricated, and tested for use in an analog data link. Nominal channel central wavelengths of 780 nm and 880 nm were selected to match' the emission peaks of high-performance injection laser diodes. A short-wavelength-pass dichroic filter which progressed from >90% transmission at 810 nm wave-length to >90% reflection of 830 nm provided the wavelength selectivity of the couplers. The subsystem was tested with 900 m of 50 μm/125 μm core/cladding diameter graded-index optical fiber linking the couplers and with 790 nm and 860 nm laser diode sources. Over the range 0°C to +50°C, total coupler optical power losses in the short and long wavelength channels averaged 2.4 dB and 3.8 dB, respectively. Over the same temperature range, cross-talk rejection was 33 dB in the 780 nm channel and 50 dB in the 880 nm channel. Measured overall optical performance agreed well with projected performance calculated from individual component characteristics. The subsystem passed mechanical shock tests and vibration tests per MIL-T-1522F(AS).

Paper Details

Date Published: 8 August 1983
PDF: 5 pages
Proc. SPIE 0417, Fiber Optics Multiplexing and Modulation, (8 August 1983); doi: 10.1117/12.935941
Show Author Affiliations
J. C. Williams, ITT Electro-Optical Products Division (United States)
C . L. Kozikowski, ITT Electro-Optical Products Division (United States)

Published in SPIE Proceedings Vol. 0417:
Fiber Optics Multiplexing and Modulation
Edward J. Miskovic, Editor(s)

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