Design of high-power superluminescent diodes with low spectral modulation

Gerard A. Alphonse

doi:10.1117/12.462649

16 April 2002 Design of high-power superluminescent diodes with low spectral modulation

Gerard A. Alphonse

Proceedings Volume 4648, Test and Measurement Applications of Optoelectronic Devices; (2002) https://doi.org/10.1117/12.462649
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States

Abstract

Superluminescent diodes (SLD) are high gain optical amplifiers whose output is the amplified spontaneous emission (ASE) of a current-pumped semiconductor laser gain medium. Because of the high gain (>40 dB), it is very important to reduce facet reflections to 10^-6 or lower in order to maintain spectral modulation due to feedback from facet reflection below a few percents. Tilting the SLD waveguide at an angle with respect to the facets is an effective way to reduce facet reflection. However, the angle cannot be chosen arbitrarily, because the facet reflection does not decrease monotonically with angle. This is due to the geometry of the mode profile, which is a trigonometric function inside the waveguide and a decaying exponential in the outside of the region. It also depends on the stripe width and lateral index contrast of the structure. This paper will discuss the design criteria for achieving low spectral modulation in ordinary index-guided structures and will describe several applications of SLDs. It will also discuss the design of SLDs with output power of several hundred milliwatts using the so-called diamond or inverse bow-tie waveguide structure.

Citation Download Citation

Gerard A. Alphonse "Design of high-power superluminescent diodes with low spectral modulation", Proc. SPIE 4648, Test and Measurement Applications of Optoelectronic Devices, (16 April 2002); https://doi.org/10.1117/12.462649

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available