A bidirectional optical add-drop multiplexer with gain using multiport circulators, fiber Bragg gratings, and a single unidirectional optical amplifier

We propose and demonstrate a new bidirectional optical add-drop multiplexer (BOADM) with gain based on multiport optical circulators and fiber Bragg gratings. The BOADM incorporates a single unidirectional optical amplifier and can flexibly accommodate asymmetric traffic. The device achieves more th...

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Bibliographic Details
Published in:IEEE photonics technology letters 2003-07, Vol.15 (7), p.975-977
Main Authors: An Vu Tran, Chang-Joon Chae, Tucker, R.S.
Format: Article
Language:English
Subjects:
Amplification
Amplifiers
Bidirectional
Circulation
Circulators
Devices
Gain
Multiplexing
Noise levels
Optical add-drop multiplexers
Optical amplifiers
Optical crosstalk
Optical fiber amplifiers
Optical noise
Semiconductor optical amplifiers
Spontaneous emission
Stimulated emission
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Summary:We propose and demonstrate a new bidirectional optical add-drop multiplexer (BOADM) with gain based on multiport optical circulators and fiber Bragg gratings. The BOADM incorporates a single unidirectional optical amplifier and can flexibly accommodate asymmetric traffic. The device achieves more than 13 dB of bidirectional gain and has low in-band crosstalk (below -45 dB) and low out-of-band crosstalk (below -30 dB). Moreover, the device removes Rayleigh backscattered light and out-of-band amplified spontaneous emission noise. The power penalty is negligible for all through and add-drop channels in both directions when the BOADM is used in a 6 /spl times/ 10 Gb/s bidirectional wavelength-division-multiplexing transmission system over 80 km of standard single-mode fiber.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2003.813427