Fiber and integrated optics

Radiative losses in single-mode fiber waveguides with a depressed cladding

A. V. Belov, A. S. Kurkov, S. I. Miroshnichenko, V. A. Semenov


Abstract: A comparison was made of the calculated and measured radiative losses suffered by the fundamental and first higher modes in real waveguide structures with a depressed cladding. It was found that in determination of the operating range of single-mode waveguides with a depressed cladding it is essential to allow not only for the increase in the losses due to leaking of the fundamental HE₁₁ mode at long wavelengths, but also for the shift of the cutoff wavelength of the first higher HE₂₁ mode for shorter wavelengths.

UDC: 681.7.068

PACS: 42.81.Qb, 42.81.Dp, 42.81.Bm

Received: 03.11.1988

 English version: Soviet Journal of Quantum Electronics, 1989, 19:11, 1482–1485

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