Title :
Broad-band unamplified optical link with RF gain using a LiNbO3 modulator
Author :
Burns, W.K. ; Howerton, M.M. ; Moeller, R.P.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
A reflection traveling-wave LiNbO/sub 3/ modulator is used to demonstrate unamplified link gain to 550 MHz, taking advantage of its low-drive voltage (0.5 V V/sub /spl pi//) at low frequencies, and high optical powers. 7.5 dB of gain is achieved at 50 MHz with an optical power of 188 mW and 8.5 mA of detector current. Noise figure of the 50-MHz link is it dB and spur-free dynamic range is 114 dB/spl middot/Hz/sup 2/3/. A model for gain is presented, which shows good agreement with experimental results.
Keywords :
broadband networks; electro-optical modulation; integrated optics; lithium compounds; optical fibre networks; optical noise; 188 mW; 7.5 dB; 8.5 mA; LiNbO/sub 3/; LiNbO/sub 3/ modulator; RF gain; broad-band unamplified optical link; high optical powers; low frequencies; low-drive voltage; noise figure; optical power; reflection traveling-wave LiNbO/sub 3/ modulator; spur-free dynamic range; unamplified link gain; Electrodes; Noise figure; Optical fiber communication; Optical interferometry; Optical losses; Optical modulation; Optical noise; Optical receivers; Optical saturation; Radio frequency;
Journal_Title :
Photonics Technology Letters, IEEE
