Abstract
A Ti-indiffused guided-wave interferometric modulator has been demonstrated at λ=3.39 μm with a linear small-signal 3-dB bandwidth of 1.8 GHz. This is the first interferometric modulator operating at λ>1.6 μm. An extinction ratio of 18.9 dB was obtained with Vπ=31 V for TE-polarized radiation. This value of Vπ is consistent with predictions based upon λ=0.85 μm modulator data and simple λ2 scaling rules, indicating little dispersion in the electro-optical coefficients of LiNbO3 over the 0.85–3.39-μm region. Such modulators are important components for the long-distance repeaterless data links which is the goal of the large effort in the development of ultra-low-loss fibers at the longer wavelengths.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
