The ______________ system is best developed and is used for fabricating both lasers and LEDs for the shorter wavelength region.

Related MCQs

• What is the purpose of wavelength dispersive element is LEC lasers?
• A single mode fiber has a zero dispersion wavelength of 1.21μm and a dispersion slope of 0.08 psnm-2km-1. What is the total first order dispersion at wavelength 1.26μm.
• A single mode fiber has refractive indices n1=1.50, n2= 2.23, core diameter of 8μm, wavelength=1.5μm cutoff wavelength= 1.214μm. Find the radius of curvature?
• ________ couplers combine the different wavelength optical signal onto the fiber or separate the different wavelength optical signal output from the fiber.
• Linearizing circuit techniques are used for LEDs. State whether the given statement is true or false.
• An alternative modification of the dispersion characteristics of single mode fibers involves achievement of low dispersion gap over the low-loss wavelength region between –
• As compared to planar LED structure, Dome LEDs have ______________ External power efficiency, ____________ effective emission area and _____________ radiance.
• The absence of _______________ in LEDs limits the internal quantum efficiency.
• In surface emitter LEDs, more advantage can be obtained by using
• Internal absorption in DH surface emitter Burros type LEDs is