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120 channel AM-VSB Signal Transmission by 2 Wavelength Multiplexing through Gain Flattened Hybrid Erbium-doped Fiber Amplifier

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In optical analog transmission systems using the erbium-doped fiber amplifier (EDFA), its spectral gain tilt is known to induce signal distortions in combination with laser chirping[l]. We have proposed a hybrid EDFA which consists of serially cascaded EDFs with different glass compositions and shown that the hybrid EDFA realizes a flat spectral gain(low distortion) without sacrificing an output power even after multi-stage amplification[2].

© 1995 Optical Society of America

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