In-situ OTDR for low-cost optical networks using a single-mode 850-nm VCSEL.
Journal Article
·
· Proposed for publication in Electronics Letters.
OSTI ID:971801
A new approach to optical time-domain reflectometry (OTDR) is proposed that will enable distributed fault monitoring in singlemode VCSEL-based networks. In situ OTDR uses the transmitter VCSEL already resident in data transceivers as both emitter and resonant-cavity photodiode for fault location measurements. Also valuable at longer wavelengths, the concept is demonstrated here using an 850 nm oxide-confined VCSEL and simple electronics. The dead times and sensitivity obtained are adequate to detect the majority of faults anticipated in local- and metropolitan-area networks.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 971801
- Report Number(s):
- SAND2005-2557J; TRN: US201004%%202
- Journal Information:
- Proposed for publication in Electronics Letters., Journal Name: Proposed for publication in Electronics Letters.
- Country of Publication:
- United States
- Language:
- English
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