Comparison of fast photodetector response measurements by optical heterodyne and pulse response techniques

Abstract

Abstrad--Scalar measurements at 1.3 pm of high-speed ( > 20 GHz -3-dB optical bandwidth) photodetector transfer function magnitudes by swept frequency and short pulse (<3-ps FWHM) response techniques are presented and shown to be in excellent agreement to beyond 30 GHz. Scalar deconvolution is used to obtain photodetector response from the pulse response measurements with effects of the measurement apparatus removed.

Characterization of Microwave Photonic Components

“…The photoreceiver can then be integral to the lightwave component analyser [23], or used as an external transfer standard [54]. Although time-domain techniques exist for the measurement of a photoreceivers frequency response [5], the method which has been mostly used by lightwave component analyser manufacturers is the heterodyne technique [54,55].…”

“…In the small-signal, frequency-domain approach we refer to such measurements as lightwave component analysis. Although time-domain methods also exist for the measurement of components such as photodiodes [5], we will not cover this particular topic. A simplified block diagram which illustrates some of the key small-signal, large-signal and noise interactions between the link components is shown in Figure 10.5, although large-signal and noise figure measurement techniques are beyond the scope of this chapter.…”

Measuring the Frequency Response of Photodiode Using Phase-Modulated Interferometric Detection

“…In order to measure the frequency response of photodiodes, a variety of techniques have been demonstrated in the past decade, including pulse spectrum analysis [1], optical heterodyne methods [2]- [6], the optical intensity noise technique [7], [8], and the swept frequency method by external modulation [9]. Among these methods, the impulse response analysis method is a time domain method which needs short pulse laser and high sampling rate oscilloscope.…”

Experimental considerations on bandwidth measurement of ultra-fast photoreceptors by optical heterodyning

“…In optical fiber telecommunication systems, researches have been focused on III-V materials with various structures like SAGCM-APD [2] or UTC-PD [3,4]. The f 3dB bandwidth is generally estimated by the Fourier transform of the pulse photo response waveform or by the RC-limited bandwidth and the carrier transittime-limited bandwidth [5]: 1=f 2 3dB ¼ 1=f 2 RC þ 1=f 2 T . R is the sum of the photodiode resistance and the load resistance and C is the photodiode capacitance at bias, as determined from S-parameter measurements.…”