A binobjective monocular optical module for single-chip stereo imagers is proposed. The proposed optical module employs a monocular structure to project a stereoscopic image. Using this structure, the base length can be made larger than the chip size, and the optical module enables long-range measurement. Using the proposed optical module, wide-range sensing equipment with single-chip stereo vision LSI can be constructed with low cost. The optical modules and stereo vision sensor LSI are prototyped, and a range measurement system is constructed using these prototypes. By evaluation experiments, the sufficient view angle and resolution of these modules are verified, and range measurement can be performed using the proposed system.
We compare two types of optical demultiplexers, one with a symmetric Mach-Zehnder (SMZ) switch and the other with an electro-absorption modulator (EAM), when used for 160Gbit/s (4 × 40Gbit/s) OTDM transmission over 500km. By combining the SMZ switch with a time-domain optical Fourier transformation technique, we succeeded in obtaining slightly better bit-error rate performance than with the EAM.