Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
57 (1990), S. 960-962
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Isolation ratios between −32 and −37 dB have been measured on a magneto-optic waveguide isolator over a wavelength range from 1.43 to 1.58 μm. This tunable broadband operation was achieved by rotating the input polarization angle by 22.5° from the waveguide surface of a 45° Faraday rotator to overcome the harmful effects of moderate linear birefringence. The output polarizer was then rotated to maximize the isolation ratio at each wavelength. The excess forward loss introduced by this procedure was 10% or less over this wavelength range. It is shown that excellent isolation and moderate excess forward loss (1 dB or less) can be achieved with triple garnet film, single-mode ridge waveguides over a wavelength range of ±0.2 μm around the etch-tuned wavelength, and over a temperature range of ±30 °C, which greatly enhances the usefulness of these waveguide isolators.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.103525
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