  In this work, we present the design and fabrication of a packaged whispering
gallery mode (WGM) device based on an optical nanoantenna as the coupler and a
glass microsphere as the resonator. The microspheres were fabricated from
SiO$_2$ fiber or Er$^{3+}$-doped fiber, the latter creating a WGM laser with a
threshold of 93 $\mu$W at 1531 nm. The coupler-resonator WGM device is packaged
in a glass capillary. The performance of the packaged microlaser is
characterized, with lasing emission both excited in and collected from the WGM
cavity via the nanoantenna. The packaged system provides isolation from
environmental contamination, a small size, and unidirectional coupling while
maintaining a high quality (Q-) factor ($\sim$10$^8$). It opens up new
possibilities for practical applications of WGM microdevices in a variety of
fields such as low threshold lasers, filters, and sensors.
