Abstract

Low-loss asymmetrical single-mode fiber wavelength-selective directional couplers are fabricated at low cost. Proper control of the remaining cladding thickness and the interaction length of the half-couplers produces exactly the required bandwidth and center wavelength of the filter. Increasing the interaction length reduces the bandwidth and the sidelobes. Calculated values show good agreement with the experimental results.

© 1994 Optical Society of America

Precise control of the center wavelength of a wavelength-selective single-mode-fiber–thin-film directional coupler

Alok K. Das and Amar K. Ganguly
Appl. Opt. 34(30) 6911-6914 (1995)

Automatic determination of the remaining cladding thickness of a single-mode fiber half-coupler

Alok K. Das, Mehabub Ali Mondal, Angshuman Mukherjee, and Anup K. Mandal
Opt. Lett. 19(6) 384-386 (1994)

Efficient method of coupling from a single-mode fiber to a thin-film waveguide

Alok K. Das and Amar K. Ganguly
Opt. Lett. 19(24) 2110-2112 (1994)

Grating-frustrated coupler: a novel channel-dropping filter in single-mode optical fiber

J.-L. Archambault, P. St. J. Russell, S. Barcelos, P. Hua, and L. Reekie
Opt. Lett. 19(3) 180-182 (1994)

Wavelength- and polarization-selective fused single-mode couplers

A. G. Bulushev, Yu. V. Gurov, E. M. Dianov, O. G. Okhotnikov, A. M. Prokhorov, and B. P. Shurukhin
Opt. Lett. 13(3) 230-232 (1988)