High-efficiency Mqw Electroabsorption Modulators
نویسندگان
چکیده
Multi-quantum well (MQW) electroabsorption modulators (EAMs) are attractive for applications requiring signal modulation at high speed and with high e±ciency (high extinction ratio at low voltage). They are promising devices for external signal modulation in high-bandwidth optical communication systems. EAMs can be integrated with other devices like laser diodes, semiconductor optical ampli ̄ers, and mode transformers. We have fabricated InGaAsP/InP multi-quantum well EAMs with a bandwidth above 25 GHz and with up to 35dB/V extinction e±ciency. We analyze the transmission performance of our modulator in detail and identify optimum operation conditions.
منابع مشابه
Analog Characterization of Low-Voltage MQW Traveling-Wave Electroabsorption Modulators
In this paper, high-speed traveling-wave electroabsorption modulators (TW-EAMs) with strain-compensated InGaAsP multiple quantum wells as the absorption region for analog optical links have been developed. A record-high slope efficiency of 4/V, which is equivalent to a Mach–Zehnder modulator with a of 0.37 V and a high extinction ratio of 30 dB/V have been measured. A detailed study of the nonl...
متن کاملHigh-Speed Traveling-Wave Electroabsorption Modulators
Electroabsorption modulators (EAMs) based on the quantum confined Stark effect in multiple quantum wells (MQWs) have advantages for high-speed, low drive voltage, and high extinction ratio applications. In this paper, a traveling-wave electrode structure is proposed to achieve high bandwidths with long devices and lower drive voltages at 1.55μm wavelength. An InGaAsP/InGaAsP MQW traveling-wave ...
متن کاملNumerical Analysis of Mushroom-type Traveling Wave Electroabsorption Modulators Using Full-Vectorial Finite Difference Method
Larger width of P-cladding layer in p-i-n waveguide of traveling wave electroabsorption modulator (TWEAM) results in lower resistance and microwave propagation loss which provides an enhanced high speed electro-optical response. In this paper, a fullvectorial finite-difference-based optical mode solver is presented to analyze mushroom-type TWEAM for the first time. In this analysis, the discont...
متن کاملIntegrated Tandem Electroabsorption Modulators for High-speed Otdm Applications
An integrated tandem traveling-wave electroabsorption modulators is demonstrated as an optical short pulse generator and demultiplexer for >100 Gbit/s optical time-division-multiplexed systems. Optical pulses of 4.2 ps width at 30 GHz with an extinction ratio in excess of 30 dB are achieved.
متن کاملAnalysis of Multi-Quantum Well Electroabsorption Modulators
Electroabsorption modulators (EAMs) based on the quantum confined Stark effect have advantages in applications that require high speed, low drive voltage, and high extinction ratio. They are promising devices for external signal modulation in high-bandwidth optical communication systems. EAMs can be integrated with other devices like laser diodes, semiconductor optical amplifiers, and mode tran...
متن کامل