Integrated Optical Isolator With Polarization Dependent Absorber

J. Seidenberg; N. Thorweihe; D. Seidenberg; A. Hofer; H. J. Schmitt; J. P. Krumme

doi:10.1117/12.961383

14 December 1989 Integrated Optical Isolator With Polarization Dependent Absorber

J. Seidenberg, N. Thorweihe, D. Seidenberg, A. Hofer, H. J. Schmitt, J. P. Krumme

Proceedings Volume 1126, Electro-Optic and Magneto-Optic Materials and Applications; (1989) https://doi.org/10.1117/12.961383
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

Today modern optical communication systems, based on single mode fibers, are specially designed to operate at extremely high transmission rates. Unfortunately the achievable data rates are strongly limited by fluctuating perturbations of the semiconductor laser diode used as transmitter. Mainly the perturbations are caused by undesired reflections of light in the optical communication network returning back to the laser diode. This troubling feedback can be eliminated by the application of an integrated optical isolator put between the transmitter diode and the connecting fiber. These isolators should have excellent transmission of light travelling in the forward direction. On the other hand backward travelling waves should be absorbed as completely as possible. The present paper shows the design of a practical device with corresponding properties as mentioned above. For this isolator structure numerical calculations of light propagation and mode conversion effects are demonstrated.

Citation Download Citation

J. Seidenberg, N. Thorweihe, D. Seidenberg, A. Hofer, H. J. Schmitt, and J. P. Krumme "Integrated Optical Isolator With Polarization Dependent Absorber", Proc. SPIE 1126, Electro-Optic and Magneto-Optic Materials and Applications, (14 December 1989); https://doi.org/10.1117/12.961383

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KEYWORDS

Optical isolators

Signal attenuation

Integrated optics

Diodes

Semiconductor lasers

Refractive index

Polarization

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