1 February 1992 In-line optical fiber modulators without interruption of the fiber
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Abstract
The evanescent field coupling between an optical fibre, side polished close to the core, and a high index multimode waveguide overlay is periodic in terms of the overlay index as individual high order modes are tuned in and out of resonance with the fibre mode. By biasing close to a resonance such a response is suitable for the implementation of an electro-optic modulation function for in line encoding. In this paper the demonstration and characterisation of an in line optical fibre modulator using lithium niobate in the role of the overlay is reported. Such devices do not require interruption of the fibre for component insertion and are thus mechanically robust.
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Walter Johnstone, David G. Moodie, Graham Thursby, S. Murray, M. Gill, Alaster McDonach, Brian Culshaw, "In-line optical fiber modulators without interruption of the fiber", Proc. SPIE 1580, Fiber Optic Components and Reliability, (1 February 1992); doi: 10.1117/12.135380; https://doi.org/10.1117/12.135380
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