The efficiency improvement of a bidirectional optical subassembly

Author

Wu, Hao ; Huang, Zhang-Di ; Yu, Zi-Yan ; Qian, Xiao-Shi ; Chen, Beckham ; Lu, Yan-qing

Author_Institution

Dept. of Mater. Sci. & Eng., Nanjing Univ., Nanjing, China

fYear

2009

fDate

8-10 Oct. 2009

Firstpage

597

Lastpage

600

Abstract

An approach to improve the coupling efficiency of bidirectional optical sub-assembly (BOSA) modules is proposed and experimentally demonstrated. We analyzed the wave-front aberration coefficients of a typical BOSA. It was found that the 45Â° wavelength filter induces coma and astigmatism, and then it further deteriorates the laser diode (LD) to fiber coupling. We measured the BOSA efficiencies based on a serial of different filters. For a typical 0.5 mm filter, 25% coupling efficiency improvement was achieved by optimizing the filter parameters.

Keywords

optical communication equipment; optical fibre couplers; optical fibre filters; semiconductor lasers; BOSA modules; astigmatism; bidirectional optical subassembly modules; coma; coupling efficiency; fiber coupling; filter; laser diode; size 0.5 mm; wave-front aberration coefficients; High speed optical techniques; Optical coupling; Optical fiber filters; Optical fibers; Optical filters; Optical network units; Optical refraction; Optical variables control; Transceivers; Vision defects; Bidirectional optical sub-assembly (BOSA); aberration; fiber to the home (FTTH);

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2009. APCC 2009. 15th Asia-Pacific Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-4784-8

Electronic_ISBN

978-1-4244-4785-5

Type

conf

DOI

10.1109/APCC.2009.5375558

Filename

5375558