Open AccessTunable single-to-dual channel wavelength conversion in an ultra-wideband SC-PPLN
Author(s) -
Meenu Ahlawat,
Ameneh Bostani,
Amirhossein Tehranchi,
Raman Kashyap
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.028809
Subject(s) - optics , materials science , lithium niobate , bandwidth (computing) , wavelength division multiplexing , wavelength , picosecond , signal (programming language) , wideband , laser , optoelectronics , physics , telecommunications , computer science , programming language
We experimentally demonstrate tunable dual channel broadcasting of a signal over the C-band for wavelength division multiplexed (WDM) optical networks. This is based on cascaded χ(2) nonlinear mixing processes in a specially engineered, 20-mm-long step-chirped periodically poled lithium niobate with a broad 28-nm second harmonic (SH) bandwidth in the 1.55-μm spectral range. A 10-GHz picosecond mode-locked laser was used as a signal along with a CW pump to generate two pulsed idlers, which are simultaneously tuned across the C-band by detuning of the pump wavelength within the broad SH bandwidth. Variable-input, variable-output scheme of tuned idlers is successfully achieved by tuning the signal wavelength. Pump or signal wavelength tuning of ~10 nm results in the idlers spreading across 30 nm in the C-band.