Journal
APPLIED PHYSICS LETTERS
Volume 84, Issue 4, Pages 565-567Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1644339
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Complete magneto-optical mode conversion was attained in a waveguide of diluted magnetic semiconductor Cd1-xMnxTe grown on GaAs substrate. Mode conversion ratio 98%+/-2% under a magnetic field of 5 kG was achieved in the waveguide with graded-refractive-index clad layer. The Cd1-xMnxTe waveguide showed an optical loss below 1 dB/cm, and a high magneto-optical figure-of-merit, 200 deg/dB/kG at lambda=730 nm. High efficiency magneto-optical mode conversion in a waveguide grown on a semiconductor substrate shows the feasibility of monolithical integration of an optical isolator with semiconductor optoelectronic devices. (C) 2004 American Institute of Physics.
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