A student designed a power meter circuit to measure optical power for a fiber-optic linkoperating at A of 1.55pm. The student used an InGaAs photodiode and the biasing circuit was shownbelow, where /, is the photocurrent. Assume that lo = a-P, where a ( photodiode sensitivity) is1mA/1mW of optical power. The only design parameters in the circuit are Vdd and R. The student didnot have the option to use another InGaAs photodiode with higher sensitivity.Vaa = 10 Vlo O $ v, = 0.5VRL = 2 ka(a) Use the ON/OFF model for the InGaAs diode (Vf = 0.5 Volt, not 0.7 Volt) to calculate output voltage Vofor l, of 1 mA, 2 mA, 5 mA, and 10 mA. (b) Based on your data for Vo for l, up to 5mA, what was the power meter's sensitivity in terms ofVolt/mW of optical power, P?(c) Determine the maximum optical power (Pmax) below which Vo is proportional to the optical powerPL.(d) If the student wanted to increase the power meter's sensitivity, what could he do?(e) If the student wanted to increase Pmax, what could he do?

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A student designed a power meter circuit to measure optical power for a fiber-optic link operating at A of 1.55µm. The student used an InGaAs photodiode and the biasing circuit was shown below, where lo is the photocurrent. Assume that la =a-Pz where a ( photodiode sensitivity) is Ima/1mw of optical power. The only design parameters in the circuit are Vdd and R. The student did not have the option to use another InGaAs photodiode with higher sensitivity. Vad = 10 V lo O $ V, = 0.5V R1 = 2 ko (a) Use the ON/OFF model for the InGaAs diode (Vf = 0.5 Volt, not 0.7 Volt) to calculate output voltage Vo for la of 1 mA, 2 mA, 5 mA, and 10 mA.

A student designed a power meter circuit to measure optical power for a fiber-optic link operating at A of 1.55µm. The student used an InGaAs photodiode and the biasing circuit was shown below, where lo is the photocurrent. Assume that la =a-Pz where a ( photodiode sensitivity) is Ima/1mw of optical power. The only design parameters in the circuit are Vdd and R. The student did not have the option to use another InGaAs photodiode with higher sensitivity. Vad = 10 V lo O $ V, = 0.5V R1 = 2 ko (a) Use the ON/OFF model for the InGaAs diode (Vf = 0.5 Volt, not 0.7 Volt) to calculate output voltage Vo for la of 1 mA, 2 mA, 5 mA, and 10 mA.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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