PEREIRA JÚNIOR, J.; http://lattes.cnpq.br/2674227880600448; PEREIRA JÚNIOR, Josué.
Resumen:
The present work aims to study and evaluate the performance of tunable hybrid external
cavity lasers for applications in small format coherent optical modules, presenting and
discussing results recently published in the specialized literature about the new hybrid laser
technologies. In this sense, two tunable hybrid lasers using silicon (Si) and silica (SiO2)
based cavities with ultra-wide tuning range were studied, and the feasibility of a high
power, narrow linewidth, miniaturized tunable laser was discussed for pluggable coherent
modules in small form factors, such as OSFP and QSFP-DD. The hybrid III–V/Si laser
and III–V/SiO2 exhibit, according to the literature used, high fiber-coupled output power,
without booster semiconductor optical amplifier (SOA), up to +13 dBm for III–V/Si
and +10 dBm for III–V/SiO2, and tuning range of 95 nm and 66 nm, respectively over
the C and L bands with side mode suppression ratio (SMSR) greater than 35 dB. The
miniaturized tunable laser, on the other hand, achieved narrow linewidths (down to 60
kHz), SMSR larger than 50 dB, a broad tuning range (65 nm) and a high output power
of 21.5 dBm across the C-band through the integration of a high power SOA. Moreover,
it is presented and discussed an on-chip integrated sensor technology for accurate laser
frequency control against SOA current changes or package temperature variations.
