Title :
A novel bidirectional add/drop amplifier (BADA)
Author :
Kim, C.H. ; Lee, Chang-Hee ; Chung, Y.C.
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
We demonstrate a novel bidirectional add/drop amplifier (BADA) module by using only one N/spl times/N arrayed-waveguide grating (AWG). For the effective transmission of bidirectional signals, it is essential to suppress the relative intensity noise caused by Rayleigh backscattering, multiple reflection, and/or AWG crosstalk. The proposed amplifier module can suppress the relative intensity noise simply by using two optical bandpass filters. No degradation was observed in the receiver sensitivity when these amplifier modules were used for the bidirectional transmission and add/drop multiplexing of wavelength-division-multiplexing signals.
Keywords :
Rayleigh scattering; arrays; backscatter; band-pass filters; diffraction gratings; integrated optics; modules; optical communication equipment; optical crosstalk; optical noise; optical waveguide filters; optical waveguides; wavelength division multiplexing; AWG crosstalk; N/spl times/N arrayed-waveguide grating; Rayleigh backscattering; add/drop multiplexing; amplifier modules; bidirectional add/drop amplifier module; bidirectional transmission; effective bidirectional signal transmission; multiple reflection; optical bandpass filters; optical communications equipment; receiver sensitivity; receiver sensitivity degradation; relative intensity noise suppression; wavelength-division-multiplexing signals; Acoustic reflection; Arrayed waveguide gratings; Backscatter; Crosstalk; Optical amplifiers; Optical noise; Optical receivers; Optical reflection; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
