VCSELs with monolithically integrated photodiodes for single-fiber bidirectional data transmission in the Gbit/s range

Wahl, Dietmar; Kern, Alexander; Stach, Michael; Rinaldi, F.; Rosch, R.; Michalzik, Rainer

doi:10.1016/j.jcrysgro.2010.11.103

Cited by 5 publications

(1 citation statement)

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“…A monolithic integration of PIN photodiodes with VCSELs was realized by growing the PD layers on top of the VCSEL structure in the same growth run. This guarantees an improved crystal quality compared to an overgrowth process [23]. Hence, the PIN PD layer stack is grown on top of the intrinsic Al 0.9 Ga 0.1 As etch stop layer, which also partially acts as an insulator, reducing the capacitive coupling between the two devices.…”

Section: Pin Photodiodementioning

confidence: 99%

Single-Fiber Bidirectional Optical Data Links with Monolithic Transceiver Chips

Kern

Paul

Wahl

et al. 2012

Advances in Optical Technologies

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We report the monolithic integration, fabrication, and electrooptical properties of AlGaAs-GaAs-based transceiver (TRx) chips for 850 nm wavelength optical links with data rates of multiple Gbit/s. Using a single butt-coupled multimode fiber (MMF), low-cost bidirectional communication in half- and even full-duplex mode is demonstrated. Two design concepts are presented, based on a vertical-cavity surface-emitting laser (VCSEL) and a monolithically integrated p-doped-intrinsic-n-doped (PIN) or metal-semiconductor-metal (MSM) photodetector. Whereas the VCSEL-PIN photodiode (PD) chips are used for high-speed bidirectional data transmission over 62.5 and 50 μm core diameter MMFs, MSM TRx chips are employed for 100 or 200 μm large-area fibers. Such a monolithic transceiver design based on a well-established material system and avoiding the use of external fiber coupling optics is well suited for inexpensive and compact optical interconnects over distances of a few hundred meters. Standard MMF networks can thus be upgraded using high-speed VCSEL-PIN transceiver chips which are capable to handle data rates of up to 10 Gbit/s.

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Section: Pin Photodiodementioning

confidence: 99%