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Monolithically integrated sagnac interferometer for all-optical wavelength conversion

Menon, V.M. and Tong, W. and Li, C.Q and Xia, F. and Glesk, I. and Prucnal, P.R. and Forrest, S.R. (2002) Monolithically integrated sagnac interferometer for all-optical wavelength conversion. In: LEOS 2002. The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2002, 2002-11-10 - 2002-11-14.

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Abstract

All-optical wavelength conversion in the C-band is demonstrated using a regrowth free monolithically integrated Sagnac interferometer. A single semiconductor optical amplifier (SOA) placed asymmetrically in the loop acts as the non-linear element in the interferometer. Most integrated wavelength converters use the Mach-Zehnder geometry, which requires two SOAs, hence balancing the interferometer becomes an arduous task. The Sagnac geometry, on the other hand, uses a single SOA and the clockwise and the counter clockwise signals traverse the same optical path, thereby negating the effects of optical path length differences. The device is fabricated in the InGaAsP/InP material system grown by gas source molecular beam epitaxy. A tunable (1530-1560 nm) mode locked fiber laser operating at 10 Gb/s was used as the control signal and a distributed feedback (DFB) laser operating at 1540 nm was used as the continuous wave signal. Wavelength conversion observed at 1540 nm with data at 1553 nm is shown Dependence of the on/off extinction ratio on wavelength is shown clearly indicating the uniform performance over the entire C-band. Both up conversion and down conversion is demonstrated by the device.

Item type: Conference or Workshop Item (Paper)
ID code: 39249
Keywords: monolithically integrated, sagnac interferometer, all-optical, wavelength conversion , clocks, semiconductor optical amplifiers , sagnac interferometers, optical wavelength conversion, optical interferometry, nonlinear optics, laser mode locking, geometrical optics, fiber nonlinear optics, distributed feedback devices, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 18 Apr 2012 16:45
    Last modified: 04 Oct 2012 17:22
    URI: http://strathprints.strath.ac.uk/id/eprint/39249

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