Question
a.
4.49*10⁻¹²
b.
6.84*10⁻⁹
c.
1.29*10⁻⁶
d.
2.29*10⁻⁴
Posted under Optical Communication
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. When a constant d.c. drive current is applied to device, the optical o/p power is 320 μm. Determine optical o/p power when device is modulated at frequency 30 MHz with minority...
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. The optical bandwidth is _____________ the electrical bandwidth.
View solution
Q. The optical 3 dB point occurs when currents ratio is equal to _____________
View solution
Q. In optical fiber communication, the electrical signal dropping to half its constant value due to modulated portion of optical signal corresponds to _______
View solution
Q. The active layer composition must be adjusted if a particular center wavelength is desired.
View solution
Q. For particular materials with smaller bandgap energies operating in _____________ wavelength, the linewidth tends to ______________
View solution
Q. To utilize _____________________ of SLDs at elevated temperatures, the use of thermoelectric coolers is important.
View solution
Q. The internal quantum efficiency of LEDs decreasing _______________ with ________________ temperature.
View solution
Q. Linearizing circuit techniques are used for LEDs.
View solution
Q. Intrinsically _________________ are a very linear device.
View solution
Q. The active layer of E-LED is heavily doped with ____________
View solution
Q. The InGaAsP is emitting LEDs are realized in terms of restricted are ____________
View solution
Q. Mesa structured SLEDs are used ____________
View solution
Q. The overall power conversion efficiency of electrical lens coupled LED is 0.8% and power applied 0.0375 V. Determine optical power launched into fiber.
View solution
Q. Determine the overall power conversion efficiency of lens coupled SLED having forward current of 20 mA and forward voltage of 2 V with 170 μW of optical power launched into multimode step index fiber.
View solution
Q. In a multimode fiber, much of light coupled in the fiber from an LED is ____________
View solution
Q. Estimate optical power coupled into fiber of DH SLED having emission area of 1.96*10⁻⁵, radiance of 40 W/rcm², numerical aperture of 0.2 and Fresnel reflection coefficient of 0.03 at index matched fiber surface.
View solution
Q. A DH surface emitter LED has an emission area diameter of 60 μm. Determine emission area of source.
View solution
Q. DH surface emitter generally give ____________
View solution
Q. Internal absorption in DH surface emitter Burros type LEDs is ____________
View solution
Q. In surface emitter LEDs, more advantage can be obtained by using ____________
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Optical Communication? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
