The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We have demonstrated ultrasmall buried heterostructure photonic crystal lasers. Very low threshold optical power in butt-jointed InP waveguide of 1.5 μW and maximum fiber output of 0.44 μW are achieved. High-speed direct modulation (3-dB modulation bandwidth of 5.5 GHz) is also demonstrated at room temperature by optical pumping.
An ultracompact buried heterostructure photonic crystal nanocavity laser exhibits a small energy cost of 8.76 fJ/bit with 20-Gbit/s modulation by optical pumping. The maximum output power in waveguide and the external differential quantum efficiency are -10.3 dBm and 53%, respectively.
A monolithically integrated tunable transmitter consisting of tunable DFB laser array and Mach-Zehnder modulator is developed. Power penalty in the chromatic dispersion range of ±800 ps/nm with zero-chirp operation is less than 0.7 dB, modulating at 10-Gbit/s NRZ signal.
We demonstrate all-optical bistable memory operation with InGaAsP photonic crystal nanocavities based on refractive index modulation caused by carrier-induced nonlinearity. The minimum bias power for bistability is extremely low at 40 muW and the operating energy required for switching is only 30 fJ.
Using a frequency modulated DBR-LD and an optical filter, error-free transmission of a 40-Gb/s signal over a 0- to 20-km span (non-dispersion-shifted fiber) has been demonstrated for the first time.
We demonstrate all-optical bistable memory operation with 1.3 Q-InGaAsP photonic crystal nanocavities based on refractive index modulation caused by carrier-induced nonlinearity. The minimum bias power for bistability is extremely low at a few tens of muW and the operating energy required for switching is only 30 fJ.
We propose a novel transmitter consisting of a frequency modulated widely tunable SSG-DBR laser and an optical filter. 100- and 60-km transmission was demonstrated for 10- and 20-Gbit/s NRZ signals, respectively.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.