Since our first manufactured
singlemode zirconia ferrule in 1980, we have always taken
into consideration our end user’s comments and suggestions,
and continued to improve our products. Although the zirconia
ferrules appear to be just a simple ceramic cylinder, the
outer diameter (OD) of the ferrules is grinded and polished
at a controlled submicron level. Moreover, the dimensions
of the ferrules need to be precise with a tolerance level
of ±0.0005 mm, which is the requirement for a singlemode type
ferrule.
The ferrules have a precise hair-thin Inner Diameter (ID)
for aligning the optical fiber with various ODs. The ferrule’s
ID is polished to a diameter of 0.001mm or larger than the
OD of the optical fiber. Moreover, this ID has a precision
of 0.001mm in concentricity and 0.0005mm in eccentricity for
the singlemode ferrules used for optical communication components.