Planar n-SI-n heterostructure athermal InP (110) optical modulator.
We report an athermal InP (110) optical modulator with a simple planar n-SI-n heterostructure. A symmetrical push-pull operation provides a high-extinction ratio of >25 dB over the entire C-band and zero-chirp modulation. A Mach-Zehnder optical modulator (MZM) exhibits a 3 dB-EO bandwidth of 30 GHz and 40-Gb/s NRZ high-speed modulation with wavelength and temperature insensitive operation. We also successfully demonstrate an MZM integrated twin-IQ modulator that exhibits 56-Gb/s × 2 athermal QPSK modulation at constant drive and bias voltages.
Yoshihiro
Y
Ogiso
Yasuhiko
Y
Nakanishi
Shigeru
S
Kanazawa
Eiichi
E
Yamada
Hiromasa
H
Tanobe
Masakazu
M
Arai
Yasuo
Y
Shibata
Masaki
M
Kohtoku
D007204:Indium / Q000737:chemistry*; D008853:Microscopy; D008855:Microscopy, Electron, Scanning; D055096:Optical Devices; D010720:Phosphines / Q000737:chemistry*; D011846:Radio Waves; D012815:Signal Processing, Computer-Assisted
D010720:Phosphines; D007204:Indium; C090882:indium phosphide