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Direct-detection DWDM and information transmission using infrared acousto-optic femtosecond pulse shaping

Publication ,  Journal Article
Huang, F; Warren, WS
Published in: Proceedings of SPIE - The International Society for Optical Engineering
December 1, 2004

Acousto-optic modulator (AOM)-based pulse shaping permits precise spectrum slicing, which is useful for dense wavelength division multiplexed (DWDM)-based architectures. In essence, this method uses microsecond-duration radio frequency pulses to completely control the spectra of femtosecond laser pulses, hence achieves dramatic temporal data compression. We demonstrated the AOM pulse shaper as the modulator and a CCD camera with 256 pixels as the receiver. The spectrum of a 200 fs Erbium Doped Fiber Laser (EDFL) pulse was dispersed across the AOM's aperture (FWHM was 35 nm) and was then modulated in a conventional pulse shaper. We tested 87 channels with channel-spacing of 0.41 nm using a 518-MHz modulator, and 120 channels with channel-spacing of 0.29 nm using a 148-MHz modulator (in each case a 0.1 nm guard band was used). Starting from the original pulses, this modulation creates time slots of 43 ps and 63.4 ps respectively. The equivalent speed of the transmission will be 2.0 Tb/s and 1.9 Tb/s in a highly multiplexed system. The spectral efficiencies achieved in this experiment were ∼46%, approaching the theoretical limit of 50% for On-Off Keying (OOK) modulation. A benchmark image was successfully sent over the test bed.

Duke Scholars

Published In

Proceedings of SPIE - The International Society for Optical Engineering

DOI

ISSN

0277-786X

Publication Date

December 1, 2004

Volume

5579

Issue

PART 2

Start / End Page

652 / 660
 

Citation

APA
Chicago
ICMJE
MLA
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Huang, F., & Warren, W. S. (2004). Direct-detection DWDM and information transmission using infrared acousto-optic femtosecond pulse shaping. Proceedings of SPIE - The International Society for Optical Engineering, 5579(PART 2), 652–660. https://doi.org/10.1117/12.563513
Huang, F., and W. S. Warren. “Direct-detection DWDM and information transmission using infrared acousto-optic femtosecond pulse shaping.” Proceedings of SPIE - The International Society for Optical Engineering 5579, no. PART 2 (December 1, 2004): 652–60. https://doi.org/10.1117/12.563513.
Huang F, Warren WS. Direct-detection DWDM and information transmission using infrared acousto-optic femtosecond pulse shaping. Proceedings of SPIE - The International Society for Optical Engineering. 2004 Dec 1;5579(PART 2):652–60.
Huang, F., and W. S. Warren. “Direct-detection DWDM and information transmission using infrared acousto-optic femtosecond pulse shaping.” Proceedings of SPIE - The International Society for Optical Engineering, vol. 5579, no. PART 2, Dec. 2004, pp. 652–60. Scopus, doi:10.1117/12.563513.
Huang F, Warren WS. Direct-detection DWDM and information transmission using infrared acousto-optic femtosecond pulse shaping. Proceedings of SPIE - The International Society for Optical Engineering. 2004 Dec 1;5579(PART 2):652–660.

Published In

Proceedings of SPIE - The International Society for Optical Engineering

DOI

ISSN

0277-786X

Publication Date

December 1, 2004

Volume

5579

Issue

PART 2

Start / End Page

652 / 660