InP-Based Grating Antennas for High-Resolution Optical Beam Steering

Abstract

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Cascaded periodically poled electro-optical crystal optical phased array

“…As the number of cascaded-layer increases, the divergence angle could be further reduced, depending on the advancement of the lithium niobate poled process. Compared with other high-resolution OPA [31][32][33][34][35] , the present cascaded-PPLN OPA shows great superiority in terms of the number of phase tuning units.…”

Ultra-Compact and Efficient Microheaters on a Submicron-Thick InP Membrane

“…As seen in Fig. 2(b), the membrane-based BBs including the SOA [34]- [36], the isolator [48], the grating antenna [41] and the microheater share the same i-InP passive waveguide and n-InP layer including the same InGaAsP Q1.25 etch-stop. In Fig.…”

“…This combination will empower dense monolithic circuits. For instance, densely integrated optical phased arrays can be produced by combining InP-membrane-based tunable lasers [35], semiconductor optical amplifiers (SOA) [34]- [36], [38], grating antennas [41], and microheaters monolithically on the same chip.…”

InP membrane integrated photonics research

“…Recently, Wang et al have demonstrated a grating antenna BB for beam steering on the IMOS platform [172], which exhibited a beam width of 0.05 • , setting a record for InPbased beam steerers. The antenna features a fabrication insensitive design and utilizes the double-sided processing for performance boost.…”