Design of a phase-shifted long-period grating device and its application as a gain-flattening fiber filter

Yinian Zhu; Beatrys M. Lacquet; Pieter L. Swart

doi:10.1117/12.402684

9 October 2000 Design of a phase-shifted long-period grating device and its application as a gain-flattening fiber filter

Yinian Zhu, Beatrys M. Lacquet, Pieter L. Swart

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Proceedings Volume 4225, Optical Interconnects for Telecommunication and Data Communications; (2000) https://doi.org/10.1117/12.402684
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

The transmission characteristics of phase-shifted long-period gratings (LPGs) are simulated theoretically by a combination of coupled-mode theory and fundamental-matrix method. It is suggested that a phase-shifted LPG device cascaded with another normal LPG can be used to flatten the gain spectrum of an erbium-doped fiber amplifier (EDFA) with all three gain peaks. The results of simulations have shown that a broadband amplifier with peak-to-peak 0.7 dB gain variation over 36 nm can be practically realized. It proves that such a gain- flattening fiber filter is indeed plausible, and has a potential application in gain-flattening in dense wavelength- division multiplexed (DWDM) telecommunication systems.

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Yinian Zhu, Beatrys M. Lacquet, and Pieter L. Swart "Design of a phase-shifted long-period grating device and its application as a gain-flattening fiber filter", Proc. SPIE 4225, Optical Interconnects for Telecommunication and Data Communications, (9 October 2000); https://doi.org/10.1117/12.402684

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KEYWORDS

Optical amplifiers

Phase shifts

Optical filters

Optical design

Telecommunications

Dense wavelength division multiplexing

Fiber Bragg gratings

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