We show an improved fabrication process of trapezoidal polarization converters for InP-based photonic integrated circuits. The new process has reduced complexity, and the fabricated converters have loss two times lower than reported previously. The measurements of the converters show an efficiency of polarization conversion of 97.9% at a wavelength of 1.535 μm and loss below 0.5 dB.
© 2013 Optical Society of America
Original Manuscript: January 11, 2013
Revised Manuscript: February 24, 2013
Manuscript Accepted: February 25, 2013
Published: March 20, 2013
Dzmitry O. Dzibrou, Jos J. G. M. van der Tol, and Meint K. Smit, "Improved fabrication process of low-loss and efficient polarization converters in InP-based photonic integrated circuits," Opt. Lett. 38, 1061-1063 (2013)