title: All-fiber zero-insertion-loss add-drop filter for wavelength-division multiplexing.
abstract: We developed and fabricated an all-fiber add-drop filter by recording a Bragg grating in the waist of an asymmetric mode converter-coupler formed by adiabatic tapering and fusing of two locally dissimilar, single-mode optical fibers. The insertion loss of the device was ~0.1 dB .A narrow spectral bandwidth (<1 nm) and a large add-drop efficiency (>90%) were also demonstrated. In addition, the filter was polarization independent.
authors: A S
authors: AS
authors: Kewitsch
authors: G A
authors: GA
authors: Rakuljic
authors: P A
authors: PA
authors: Willems
authors: A
authors: A
authors: Yariv