Title :
Multi-octave operation of low-biased modulators by balanced detection
Author :
Burns, W.K. ; Gopalakrishnan, G.K. ; Moeller, R.P.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
A balanced detection approach is proposed and demonstrated which can eliminate the single-octave constraint of performance enhancement schemes for externally modulated optical links, such as low-biasing and carrier filtering. Using our approach with low-biased modulators at 110 MHz we demonstrated a second harmonic reduction of 28 dB and a multi-octave SFDR improvement of 22 dB, to 108 dB/spl middot/Hz/sup 1/2/.
Keywords :
electro-optical filters; electro-optical modulation; optical communication equipment; 110 MHz; balanced detection; carrier filtering; externally modulated optical links; low-biased modulators; low-biasing; multi-octave SFDR improvement; multi-octave operation; optical fibre communication links; performance enhancement schemes; second harmonic reduction; single-octave constraint; Detectors; Filtering; Masers; Microwave filters; Optical fiber communication; Optical filters; Optical modulation; Optical noise; Optical saturation; Optical sensors;
Journal_Title :
Photonics Technology Letters, IEEE
