An ultrasmall (<10 μm length) polarization converter in InP membrane is fabricated and characterized. The device relies on the beating between the two eigenmodes of chemically etched triangular waveguides. Measurements show a very high polarization conversion efficiency of >99% with insertion losses of <−1.2 dB at a wavelength of 1.53 μm. Furthermore, our design is found to be broadband and tolerant to dimension variations.
© 2012 Optical Society of America
Original Manuscript: June 1, 2012
Revised Manuscript: July 19, 2012
Manuscript Accepted: July 19, 2012
Published: August 31, 2012
Josselin Pello, Jos van der Tol, Shahram Keyvaninia, René van Veldhoven, Huub Ambrosius, Gunther Roelkens, and Meint Smit, "High-efficiency ultrasmall polarization converter in InP membrane," Opt. Lett. 37, 3711-3713 (2012)