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JDSU Unleashes Posse of Products

JDS Uniphase intros temperature tunable lasers, an EDFA, a raman amp pump, improvements in TFF for WDM, and new features for its RX3 meters

March 19, 2002

4 Min Read

OTTAWA and SAN JOSE, Calif. -- JDS Uniphase Corporation (Nasdaq: JDSU and TSE: JDU) today announced its temperature tunable source laser family designed for use in DWDM fiberoptic communications. Temperature tunable over four 50 Ghz channels, they can simplify procurement and logistics and reduce spare part inventory when compared to using fixed wavelength models which require one part for every channel. The 1550 continuous wavelength temperature tunable lasers (TTLs) are available in 10, 20 and 40 milliwatts (mW) (CQF474/208, 508 and 708, respectively), all with internal wavelength monitoring that eliminates the need for an external wavelength locker. Packaged in the industry standard 14-pin butterfly package and using the same technology as fixed wavelength sources, these lasers can be easily implemented into existing DWDM, cable television (CATV) and hybrid fiber-coax (HFC) networks with minimal re-design. In a separate release:JDS Uniphase Corporation (Nasdaq: JDSU and TSE: JDU) today announced its OA 400 Erbium-doped fiber amplifier (EDFA) for use in DWDM telecommunications systems, further broadening its industry leading line of standard optical amplifiers. The OA 400 offers a low-cost alternative to today’s customized EDFAs in an industry standard, compact package (70 x 90 x 12 mm). The OA 400 is a single-stage, single-pump amplifier designed for boosting signal lasers, power equalization at the receiver or mid-span, or amplification in edge or access networks where gain flattening is not required. All key components for the OA 400 are internally manufactured to optimize for performance, reliability and costs. For example, by utilizing JDS Uniphase’s uncooled 980 nm pump lasers, the OA 400 can offer lower cost and improved performance through reduced power consumption requirements (up to 75% improvement versus EDFAs utilizing standard 980nm pump lasers). The OA 400 typically provides 24 dB small signal gain and 15 dBm saturated output power. In a separate release:JDS Uniphase Corporation (Nasdaq: JDSU and TSE: JDU) today announced its digitally controlled Raman Pump Unit (RPU) for long haul and ultra long haul DWDM systems. The RPU includes a digital control interface to reduce design and integration time that is typically required of systems manufacturers. The Raman Pump Unit is the key technology for Raman amplification. By utilizing the transmission fiber as the gain medium, Raman amplification can reduce noise accumulation in the transmission signal and allow for longer reach spans. Raman technology will initially be used in 10- and 40-Gb/s systems as an enhancement to Erbium Doped Fiber Amplifier (EDFA)-based chains to reduce the number of electrical regeneration and amplification points, which lowers overall system costs. System designs based exclusively on Raman for amplification are also envisioned. The new digital RPU utilizes JDS Uniphase optical components, including 14XX diode sources. Digital control is via an RS-232 interface. The RPU incorporates polarization and wavelength multiplexed laser diodes, an integrated pump/signal multiplexer and an optical output monitor. It has high power pump output of up to 550 milliwatts (mW), low insertion loss (0.8 dB typical), low degree of polarization dependent loss (0.1 dB maximum), ultra-low degree of polarization (<7.5%) and flat gain across the transmission band. In a separate release:JDS Uniphase announced today significant improvements in thin film filter (TFF) manufacture that offer dramatically improved performance for wideband wavelength division multiplexing (WDM) products for fiberoptic communications. The new, ultra-low loss TFFs are being used in a 4-band wideband demultiplexer, used in optical amplifiers, that will start shipping in March. Wideband WDM’s are extensively used in ultra-long haul, long haul, and metro applications for band splitting, bi-directional splitting, and supervisory functions. The customized design of the modules enables their use in a wide range of optical networks covering the S-, C- and L-band plus Optical Supervisory Channels (OSC) outside the signal bands. Improvements in the TFF coating process has resulted in lower insertion loss and band ripple when used in these wideband WDM modules. Individual filter bandwidths of up to 36 nm can now be regularly produced with band ripple of less than 0.02 dB. In a separate release:JDS Uniphase Corporation (Nasdaq: JDSU and TSE: JDU) today announced the availability of two new features for its industry-leading RX3 series multichannel backreflection meters: three-laser wavelength testing and a 10 mm InGaAs detector. The RX3 measures insertion loss and backreflection for single fiber connectors, as well as multifiber ribbon cables. Three wavelength testing
The RX3 now contains a third internal laser, allowing cable connector and passive components manufacturers to measure wider optical wavelength ranges when testing components and connector assemblies. This is key because today’s new standards require the manufacturers to qualify their products over a wider range of wavelengths. The RX3 measures 7 different output sources, from 850 nm and 1310 nm multimode to 1310 nm, 1480 nm, 1550 nm, 1625 nm, and 1650 nm single-mode. 10 mm InGaAs detector
The 10 mm InGaAS detector measures high-count 24-channel ribbon cables. This is a key benefit for ribbon cable and component manufacturers since fiber packaging continues to evolve and packing density is increasing. JDS Uniphase Inc. For more information on OFC 2002, please visit: www.nottheofc.com

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