Discovery Semiconductors manufactures photodetectors and balanced photoreceivers for 10 Gb, 40Gb, and 100 Gb applications.

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Introducing the "700 Series" of Balanced Photodiodes


Ewing, NJ - February 16, 2004

For the past several years, Discovery Semiconductors, Inc. has been commercially selling Balanced Photoreceivers, models R405 (14 GHz bandwidth) and R405ER (20 GHz bandwidth) for the 10 Gb DPSK and DQPSK market. These two models have well served the telecom industry in its R&D efforts of new modulation techniques of DPSK and DQPSK.

Today, we announce four new models of balanced photodiodes to augment our popular R405 and R405ER models. These new models will be called DSC710, DSC720, DSC730, and DSC740 Balanced Photodiodes. They consist of a "push-pull pair" of InGaAs photodiodes, each photodiode being capable of handling large optical power in excess of 10 dBm.

Table I: Salient Features of the "700 Series" Balanced Photodiodes

Model Number
Typical Bandwidth (GHz)
Typical Responsivity at 1300 nm (A/W)
Typical Responsivity at 1550 nm (A/W)
Typical PDL (dB)
Optical Power Handling Capability (mW) Per Photodiode
DSC710
10
0.80
0.75
0.05
> 30
DSC720
20
0.80
0.75
0.05
> 20
DSC730
30
0.65
0.60
0.05
> 15
DSC740
40
0.65
0.60
0.05
> 10

The models DSC710 and DSC720 will be useful for the 10 Gb DPSK & DQPSK markets, whereas the models DSC730 and DSC740 will serve the 40 Gb DPSK & DQPSK applications. All the new models come with the option of installing them in our "Lab Buddy", the MOST VERSATILE O/E CONVERTER Instrument in the industry.

See Related Products: Balanced InGaAs Photodiodes to 20 GHz and Balanced InGaAs Photodiodes for 40 Gb


For additional information, including complete product specifications, operational capabilities and pricing, or to discuss your application in detail, please call Discovery at: (609) 434-1311 or fax: (609) 434-1317.

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