We show by BER measurements the first 40 Gb/s transmission over 50m GI-POF. The robustness towards launching offsets... (click for more)

Recently, there has been a renewed interest in coherent optical detection. The reasons for this are... (click for more)

We report the development of top illuminated InGaAs photodetectors pigtailed to 50 µm core multimode (MM) fibers... (click for more)

We have manufactured a miniaturized, light weight, high data rate, optical coherent receiver system... (click for more)

We review coherent receiver implementations and their performance for phase-shift keyed transmission... (click for more)

Heterodyne detection of 10-Gb/s nonreturn-to-zero (NRZ) ON–OFF keying and NRZ differential phase-shift keying is demonstrated... (click for more)

We report record sensitivities for heterodyne detection of 10 Gb/s OOK and DPSK at -31 dBm and -33 dBm, respectively. The results are achieved without using an optical amplifier... (click for more)

We report -31 dBm receiver sensitivity for heterodyne detection of 10 Gb/s OOK without using an optical pre-amplifier... (click for more)

We demonstrate a coherent heterodyne receiver module with -31 dBm sensitivity for unpreamplified 10 Gb/s on/off keying... (click for more)

We report the development of a coherent heterodyne balanced fiber optic receiver with a small laboratory footprint... (click for more)

Optical communications systems are vital to allow high speed satellite-to-satellite and satellite-to-ground-based communication links with low power consumption and low weight... (click for more)

We have manufactured rad-hard, InGaAs photodiodes using our proprietary Dual-Depletion Region (DDR) technology with bandwidths exceeding 10 GHz... (click for more)

We have manufactured custom, dual InGaAs photodiodes using our proprietary Dual-Depletion Region (DDR) technology... (click for more)

The transport capacity of fiber-optic communications systems over ultralong-haul (UHL) distances has been significantly increased in recent years... (click for more)

We present coherent optical detection with high sensitivity for fiber-optic and free-space applications... (click for more)

We present coherent optical detection of 2.5 Gb/s and 10 Gb/s with high sensitivity for fiber-optic and free-space applications... (click for more)

We have developed 10, 20, 30, and 40 Gb bandwidth balanced photoreceivers which have applications for both analog and digital fiber optic communications... (click for more)

We have fabricated a monolithic Opto-electronic Integrated Circuit (OEIC) comprising of an InGaAs PIN photodetector and a Common Gate Amplifier (CGA) using Metamorphic High Electron Mobility Transistors (MHEMTs) on 4 inch GaAs substrates... (click for more)

Method and Apparatus for Monolithic Optoelectronic Integrated Circuit Using Selective Epitaxy'... (click for more)

We have developed 65 GHz Wide Bandwidth InGaAs Photodiodes and Photoreceivers for optical fiber driven telecommunication applications. The Photodiode operates at a nominal reverse bias of -3V... (click for more)

A bandwidth of 100 GHz and group delays exhibiting variations of ± 2 psec have been modeled using a front-illuminated InGaAs/InP dual-depletion PIN photodiode... (click for more)

Lightweight Miniaturized Integrated Microsatellite Employing Advanced Semiconductor Processing and Packaging Technology '... (click for more)

Discovery Semiconductors has developed 50 GHz "Dual-depletion InGaAs/InP Photodiodes". The PIN operates at -3V reverse bias and has minimum responsivity of 0.7 A/W at 1.3 and 1.55 um wavelength... (click for more)

Optical signal distribution for phased array antennas in communication systems is advantageous to designers.  By distributing the microwave and millimeter wave signals through optical fiber there is the potential for improved performance and lower weight... (click for more)

Eyesafe LIDAR systems require detectors that operate in the 1.55 micron band with high bandwidth and large area. This paper describes the three design methods used in developing such detectors... (click for more)

Recently NASA announced an initiative "X-2000" whose ultimate goal is "satellite-on-a-chip." We propose advanced, Monolithic InGaAs-on-silicon Short Wave Infrared (SWIR), and Monolithic InSb-on-silicon Medium Wave Infrared (MWIR) detector arrays for X-2000... (click for more)

Micro-satellites are fast becoming important scientific and commercial realities. However, most satellites that fall in this class are still fairly large (~50 Kg, ~0.5 m). One of the major obstacles in reducing these parameters further is the lack of integration of all the satellites functions...  (click for more)

We have designed and developed 1, 16, 256, and 512 element linear Monolithic InGaAs-on-silicon infrared Detector Arrays for the 1-3 µm SWIR band. A methodology of monolithically integrating InGaAs photodetectors and high density complex CMOS readout electronics all on a single silicon substrate has been developed... (click for more)

Method and Apparatus for Monolithic Optoelectronic Integrated Circuit Using Selective Epitaxy '... (click for more)

The design of a new kind of photodetector, the dual-depletion region p-i-n photodetector, is presented. This vertical detector has a parasitic capacitance and transit time that can be controlled semi-independently... (click for more)

Monochromatic optical detection is often desired. One technique to accomplish this is to place the detector within an optical resonator... (click for more)

We have successfully grown InGaAs detectors on the silicon substrate using the special technique of selective epitaxy. Small diameter (50 µm) selective area depositions of In_0.5Ga_0.5As on silicon have exhibited a lower dislocation density, and hence, better electrical performance... (click for more)