'A'
Tuneable Sagnac comb filter including two wave retarders
Author(s): Pottiez O (Pottiez, O.)1, Ibarra-Escamilla B (Ibarra-Escamilla, B.)2, Kuzin EA (Kuzin, E. A.)2, Grajales-Coutino R (Grajales-Coutino, R.)1, Gonzalez-Garcia A (Gonzalez-Garcia, A.)1  
Source: OPTICS AND LASER TECHNOLOGY    Volume: 42    Issue: 2    Pages: 403-408    Published: MAR 2010    
Addresses:
1. Ctr Invest Opt, Guanajuato 37150, Mexico
2. INAOE, Dept Opt, Puebla 72000, Pue Mexico

'B'
Polarization-independent tunable fiber comb filter
Author(s): Lee YW, Han KJ, Jung J, Lee B  
Source: IEEE PHOTONICS TECHNOLOGY LETTERS    Volume: 16    Issue: 9    Pages: 2066-2068    Published: SEP 2004