Characterization of Waveguide Photonic Crystal Reflectors on Indium Phosphide Membranes

Abstract

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InP membrane integrated photonics research

“…This shares the same philosophy with the generic InP photonic integration [4], and so far several lasers have been One of the most straightforward laser design realized is the DBR laser [78]. The cavity is formed with two PhCbased DBR reflectors [79] in the passive areas of the circuit (see section 7.2). An alternative realization of the DBR is based on conventional gratings [80].…”

“…For instance, on the front side these reflectors can have five periods which gives 60% reflectivity. On the back side the PhCs have eight periods which gives 99% reflectivity [79]. Such high reflectivity and the tuneability are not offered in the conventional InP platforms.…”

“…The former restricts the location of the mirrors, while the latter gives a significant optical loss. On the InP membrane, a new type of on-chip mirrors based on 1D PhC has been developed [79], showing high reflectivity (>95%), broad optical bandwidth (>100 nm) and ultracompact footprint (4 µm in length).…”

Integrated Hybrid Plasmonic-Photonic Device for All-Optical Switching and Reading of Spintronic Memory

“…Despite large enhancement of the electric field provided by a PNA, the interaction cross section is still limited due to its small feature size. We propose the use of a PhC cavity [31][32][33] to further improve the interaction cross section. A PhC cavity, basically a Bragg grating cavity based on periodic dielectric structures satisfying the Bragg condition [34,35], provides high spatial light confinement in a diffraction-limited cavity.…”

An Accurate Characterization Method for Integrated Polarization Converters

“…We introduce a method for characterization of polarization converters which is independent on the insertion loss of the grating couplers and other components in the characterization circuit, and hence boosts the accuracy of the characterization significantly. This is an adjustment to the method that is used to characterize photonic crystal reflectors [1]. The key difference is that for the characterization of polarization converters, there is only one unknown, the conversion efficiency, instead of two unknowns for the reflectors, the transmission and reflection of a reflector.…”