InGaAsP/InP evanescent mode waveguide optical isolators and their application to InGaAsP/InP/Si hybrid evanescent optical isolators

Abstract

We theoretically investigated InGaAsP/InP evanescent mode waveguide optical isolators and proposed their application to InGaAsP/InP/Si hybrid evanescent optical isolators. InGaAsP/InP evanescent optical isolators are composed of semiconductor optical amplifier (SOA) waveguides having InGaAsP multiple quantum well (MQW) active layer and upper InGaAsP waveguide layer with ferromagnetic layer. Optical isolation is obtained for evanescent optical mode in the InGaAsP waveguide layer. InGaAsP/InP/Si hybrid evanescent optical isolators are theoretically proposed based on the idea of InGaAsP/InP evanescent optical isolators. InGaAsP/InP/Si hybrid evanescent optical isolators are composed of ferromagnetic metal loaded silicon evanescent waveguides with wafer-bonded InGaAsP/InP optical gain material. The optical isolation and propagation loss are discussed with the structure of silicon evanescent waveguides, and optical isolation of 8.0 dB/mm was estimated. The concept of semiconductor evanescent mode optical isolators is feasible with InP based photonic integrated circuits and advanced silicon photonics.

Accurate vectorial finite element mode solver for magneto-optic and anisotropic waveguides

“…As it can be seen from the figure, a 25 nm-thick iron film will produce a NRL of about −7 dB/mm, while a four times thicker layer generates an isolation of almost −12 dB/mm. Those values are consistent with those reported in the literature [56,57,59]. Also in this case, a compared analysis with the perturbation method is performed.…”

“…Optical isolation based on nonreciprocal loss can be implemented by considering a magnetooptic material, which provides the nonreciprocal loss, and an optical waveguide amplifier, which compensates the forward propagation loss. Several configurations have been proposed for both indium phosphide [56][57][58] and silicon photonics technologies [59]. In this section, we present the modal analysis of a nonreciprocal loss waveguide for hybrid silicon photonics integrated circuit platforms.…”

Miniaturization of Laser Doppler Vibrometers—A Review

“…No report 12 [76] 8 dB [77] Butt coupler loss (dB) <2 (to lensed fiber) [78] 1.5 (to lensed fiber) [42] <2 [79] <1 [56] 0.4 [47] 6 [76] 0.8 [80] Laser sorce Hetero integration [59]/MOB [60] Monolithic Monolithic [81] Hybrid [59] and Hetero Integration [82] Hybrid integration Hybrid integration Hybrid integration Optical isolator MOB/monolithic [83] No report Monolithic [84] Monolithic [85]…”

Fabrication and Characterization of Evanescent Semiconductor Optical Isolators with Small Gain Saturation Effect

“…Furthermore, evanescent semiconductor optical isolators can be applied to hybrid silicon evanescent waveguide devices. 17) In this paper, we report the fabrication and characterization of evanescent semiconductor optical isolators theoretically proposed for high saturation output power. Furthermore, we compare and discuss the optical isolation characteristics of previously reported and currently presented semiconductor active optical isolators.…”