New, compact multimode interference couplers with tunable power splitting ratios have been realized. Experiments show large tuning ranges. Such couplers are needed to optimize ON-OFF ratios in interferometric devices and may find applications as extremely compact switches.
© 2001 IEEE
Juerg Leuthold and Charles H. Joyner, "Multimode Interference Couplers with Tunable Power Splitting Ratios," J. Lightwave Technol. 19, 700- (2001)