TY - JOUR
T1 - InGaAsP/InP multi-mode interference photonic switches for monolithic photonic integrated circuits
AU - Nagai, Shuichi
AU - Morishima, Goh
AU - Yagi, Mikito
AU - Utaka, Katsuyuki
PY - 1999
Y1 - 1999
N2 - InGaAsP/InP semiconductor photonic switches using multi-mode interference (MIPS) are proposed for monolithic photonic integrated circuits. Changing the refractive indices of index-modulated regions located in the center of a multi-mode waveguide, controls its switching functions. It is predicted from calculations by an FD-TD (finite difference time domain) method that these devices can operate in various kinds of output schemes with typical device dimensions of about 8 μm width and 540 μm length. 1 × 2 InGaAsP/InP MIPS's with a high-mesa structure have been fabricated, and fundamental switching characteristics were measured. At the preliminary stage, switching was observed at 20mA current injection with about 37% extinction ratio. Switching efficiency and cross talk of the MIPS can be improved by optimizing the device dimensions and structure. The flexibility of setting the index-modulated regions suggests versatile operation of the MIPS, such as a photonic space division switch, a variable power splitter, or as an optical modulator.
AB - InGaAsP/InP semiconductor photonic switches using multi-mode interference (MIPS) are proposed for monolithic photonic integrated circuits. Changing the refractive indices of index-modulated regions located in the center of a multi-mode waveguide, controls its switching functions. It is predicted from calculations by an FD-TD (finite difference time domain) method that these devices can operate in various kinds of output schemes with typical device dimensions of about 8 μm width and 540 μm length. 1 × 2 InGaAsP/InP MIPS's with a high-mesa structure have been fabricated, and fundamental switching characteristics were measured. At the preliminary stage, switching was observed at 20mA current injection with about 37% extinction ratio. Switching efficiency and cross talk of the MIPS can be improved by optimizing the device dimensions and structure. The flexibility of setting the index-modulated regions suggests versatile operation of the MIPS, such as a photonic space division switch, a variable power splitter, or as an optical modulator.
KW - FD-TD
KW - Multi-mode interference
KW - Photonic integrated circuit
KW - Photonic switch
KW - Switching characteristics
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U2 - 10.1143/jjap.38.1269
DO - 10.1143/jjap.38.1269
M3 - Article
AN - SCOPUS:0032678224
VL - 38
SP - 1269
EP - 1272
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 2 B
ER -