port size
3.Due to its advantages of having no end-facet reflection, easy extension to a multi-port configuration, high tolerance for fabrication errors, and compact size, the tapered MMI is a good candidate for a coherent lightwave combiner to be used in large-scale photonic integrated circuits.
8.The adopted PIC 16 C 73 A monolithic computer characters high processing rate, small size, low operating voltage, low power loss and high driving capability(the I/O port can drive LED directly). The digital ampere hour meter designed on the basis of PIC 16 C 73 A for measuring battery capacity has monolithic structure, small size, high reliability, convenient and intuitional display and low cost.


