This chapter deals with obtaining high radio‐frequency (RF) output current from a photodetector. Often, but not necessarily, a high current photodiode can achieve large output intercept points. Thus, there are many cases where a high current photodiode can also achieve high linearity. The chapter provides a detailed discussion of the internal photodiode limitations associated with generating high photocurrents. A discussion of amplitude compression is followed by the limitations imposed by series resistance, as well as discussions related to the thermal and space‐charge limits, respectively. This chapter discusses the large‐signal characteristics of photodiodes in terms of their RF power‐conversion efficiency. Many types of input optical fields can be considered as they relate to photodiode compression, including pulsed or continuous‐wave (CW). There are numerous photodetector designs that have been employed for high power applications.
High Current Photodetectors
FUNDAMENTALS OF MICROWAVE PHOTONICS ; 351-382
2015-02-26
32 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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