Abstract
With the increasing demand for high-speed optical interconnection in mobile systems like cars and airplanes, vertical-cavity surface-emitting lasers (VCSELs) offer an alternative solution to the well-established red LEDs used in media-oriented systems transport (MOST) networks based on polymer optical fiber [1]. In order to find a compromise between the need for multi-Gbit/s data rates and low system cost, we have previously presented a monolithic integration of VCSELs and metal–semiconductor–metal photodiodes (MSM PDs) for bidirectional data communication over a single butt-coupled multimode fiber (MMF) [2]. Here, for the first time, PIN PDs are used in VCSEL-based 850 nm wavelength range transceiver chips. The devices were miniaturized for use with standard 50 µm core diameter graded-index (GI) MMFs, as shown in Fig. 1 (left). By avoiding resonant signal detection mentioned in a somewhat related approach [3], no temperature control is required neither for MSM nor for PIN PD-based transceiver chips.
© 2011 Optical Society of America
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