Fiber Optics Transmission Systems

Optical Zonu Corp. has introduced the OZ1600 Ultra Broadband Fiber Optic Transceiver for RF over fiber-optics links. The new transceiver is designed for operation up to 7 GHz with exceptionally flat frequency response. It is packaged in a rugged dust-tight cast metal housing with optional integral WDM for duplex transmission on one SMF-28 singlemode fiber.

Optical Zonu says key attributes of the new product include:

• operation from 20 MHz to 7 GHz
• high SFDR, which provides “excellent noise performance and high linearity”
• very stable gain
• flat frequency response
• extended temperature range of operation
• a rugged, simple, modular package.

Since the analog RF parameters of fiber optic transmission depend upon the operating temperature of the laser diode, transceivers such as the OZ1600 use a thermo-electric cooler (TEC) that locks the temperature of the laser at a constant level, stabilizing the laser wavelength, optical powerm, and relative intensity noise (RIN). The new transceiver operates over -20°C to +65°C with gain variation of less than 2 dB, the company asserts.

“These linear RF over fiber transceivers allow physical separation of RF systems components that cannot be achieved using coaxial cable or transmission lines,” said Soyola Baasan, director of sales at Optical Zonu. “They offer significant improvements in the transport of RF signals in their native format reliably over many optical networks and across a broad range of frequencies. Applications that benefit most from this technology include antenna “remoting,” satcom, GPS distribution, DAS, distributed emitter systems, timing and frequency signal transmission over optical fiber that requires low phase noise, WiMax, 4G LTE, or any other application that requires sending RF signals over optical fiber reliably and in very stable form despite ambient temperature variation.”

The standard optical connector is the SC/APC (FC/APC is also available) for low back reflection applications like analog video and long-haul digital data transmission. An optional multimode fiber version is also available.

The base OZ1600 unit is priced depending upon the specification of options and unit volume (contact the factory for details) and is available 6 to 8 weeks ARO.

Finisar Corp.., A manufacturer of high-speed optical communications, in cooperation with EXFO inc. and Ixia, standard-compliant proven 100G Ethernet (100gE) optical link at OFC in San Diego last week. The exercise was the demonstration of Ixia, “K2″ 100G EXFO Packet Blazer test and the test year 40G/100G Ethernet communication error at 103.1 Gb / s modules LR4-100gE Finisar optical transceiver of PSC.

flawless transaction has been demonstrated by the delivery of IP packets between the testers 100G over 20 km of singlemode fiber, exceeding the maximum distance of 10 km under standardization for this application.

The optical transceiver modules are compatible with Finisar FTLC1181R PSC Multi-Source Agreement (MSA) and the Central 100GBASE LR4 (4 x 25 Gb / s) optical interface defined by the IEEE draft standard \ P802.3ba. Ltr part of a family of transceivers Finisar PSC, which also 40G Ethernet Single-mode and multimode versions. Finisar entire portfolio of transceiver modules PSC services internally developed in-house integrated circuits and packaged to look.

EXFO FTB-85100G is a laptop 100/40 Gb / s Ethernet test; simplified laboratory tests, field trials and early implementation. Product features include:
Fully integrated Layer 1/2/3 evaluating the performance of 40G and 100G Ethernet network equipment and service testing capabilities Etherbert to test the integrity of 40G and 100G Ethernet over WDM networks OTU3 / 4 test capabilities integrated into a single test module.

Ixia “K2″ 40 and a traffic generator’s IP network and physical 100gE coding sublayer (PCS) generated measurement and analysis of the solid layer and analyzed 1-7 100gE 40GE and liner to rate up 1 million separate flows per port. The modules enable an individual “PCS Bit Error Rate Test Lane (BERT) tests on a variety of PRBS patterns. The K2 product interact via Ixia 10GE existing product lines and speed while integrating seamlessly with Ixia’s automation software, the reasons for migration path to low cost for system development speed Ethernet .