1. Saruwatari, M., and Sugie, T., Efficient Laser Diode to Single-Mode Fiber Coupling Using a Combination of Two Lenses in Confocal Condition, J. of Quantum Elec., 1981, vol. QE-17, no. 6.
2. Holger, K., and Karsten, D., Loss Analysis of Laser Diode to Single-Mode Fiber Couplers with Glass Spheres or Silicon Plano-Convex Lenses, J. of Lightwave Tech., 1990, vol. 8, no. 5.
3. Edwards, C., Presby, H., and Dragone, C., Ideal Microlenses for Laser-to-Fiber Coupling, J. of Lightwave Tech., 1993, vol. 11, no. 2.
4. Popescu, M., Sava, F., Lörinczi, A., Savastru, D., Micloṣ, S., Mustaṭă, M., and Savastru, R., Procedure and Device for Producing Chalcogenide Microlenses, Romanian Patent request A/00243/07.04.2006.
5. Popescu, M., Sava, F., Lorinczi, A., Savastru, Dan, Miclos, S., and Savastru, R., Microspheres, Planoconvex Microlenses and Optical Fibres Based on Glassy As2S3, Jurnal of Optoelectronics and Advanced Materials, 2005, vol. 7, no. 2, April, pp. 1103–1106.