Abstract

The theory, fabrication, and performance of monolithic 4 × 4 single-mode fused couplers is reported. The field coupling matrix is derived and used to show that a device having equal coupling between the four fibers may be obtained. The fabrication of such a device is described, and measurements show that the device exhibits excellent coupling uniformity and low excess loss. The wavelength response of a device designed for equal coupling at 1.53 μm is shown between 1.2 and 1.6 μm.

© 1990 Optical Society of America

Theory and fabrication of wavelength flattened 1 × N single-mode couplers

David B. Mortimore and John W. Arkwright
Appl. Opt. 29(12) 1814-1818 (1990)

Monolithic wavelength-flattened 1 × 7 single-mode fused fiber couplers: theory, fabrication, and analysis

David B. Mortimore and John W. Arkwright
Appl. Opt. 30(6) 650-659 (1991)

Theory of fused-tapered nonlinear optical fiber couplers

Wagdy Samir, Stephen J. Garth, and Colin Pask
Appl. Opt. 32(24) 4513-4516 (1993)

Polarization dependence of 4 × 4 optical fiber couplers

David B. Mortimore
Appl. Opt. 30(21) 2952-2956 (1991)

All-fiber optical add–drop multiplexer based on a selective fused coupler and a single fiber Bragg grating

Beatriz Ortega, Liang Dong, and Laurence Reekie
Appl. Opt. 37(33) 7712-7717 (1998)