Title :
All-Optical Modulation-Format Convertor Employing Polarization-Rotation-Type Nonlinear Optical Fiber Loop Mirror
Author :
Arahira, Shin ; Murai, Hitoshi ; Fujii, Kozo
Author_Institution :
Networks & Devices Labs., Oki Electr. Ind., Co., Ltd., Tokyo
Abstract :
An all-optical modulation-format convertor with regenerative function based on fiber nonlinearity is proposed and demonstrated. The convertor was formed utilizing polarization- rotation-type nonlinear optical fiber loop mirror and could operate at both on-off keying (OOK) to OOK and OOK to phase-shift keying (PSK) format conversions only by simply rotating the optical axis of the intra lambda/2 waveplate, without excess-loss generation and realignment of the driving conditions of control optical signals in the format exchange. The 40-Gb/s OOK to OOK/PSK format conversions were successfully performed utilizing this new type of the all-optical convertor. The results also revealed that this convertor has a reshaping function to degraded control signals as an inline all-optical regenerator.
Keywords :
mirrors; optical fibre communication; optical modulation; optical repeaters; phase shift keying; all-optical modulation-format convertor; all-optical regenerator; bit rate 40 Gbit/s; degraded control signals; fiber nonlinearity; on-off keying; optical axis; phase-shift keying; polarization- rotation-type nonlinear optical fiber loop mirror; regenerative function; reshaping function; Converters; Fiber nonlinear optics; Mirrors; Optical control; Optical fiber polarization; Optical fibers; Optical modulation; Optical retarders; Phase shift keying; Repeaters; Advanced modulation format; fiber nonlinearity; format conversion; optical communication systems; wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.928833
