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VCSEL sub-assembly achieves 2.5Gbps data rate

Posted: 07 Jan 2005 ?? ?Print Version ?Bookmark and Share

Keywords:optek technology? vcsel? vertical cavity surface emitting laser? opv314f? opv315f?

Targeting design engineers who require high performance optical transmitters for high speed communications links in fiber optic test equipment, TT electronics Optek Technology has developed an 850nm VCSEL (vertical cavity surface emitting laser) packaged in an FC style receptacle capable of data transmission rates up to 2.5Gbps.

Designated the OPV314F/315F series, these transmitters combine high speed data transmission with high output power, making them well suited for integration into fiber optic test equipment. They are compatible with high speed communications protocols, including Fiber Channel, Gigabit Ethernet, ATM and VSR (Very Short Reach).

The OPV315F devices incorporate an attenuation coating on the inside surface of the lens, which reflects approximately 40 percent of the light, reducing the back reflection that can occur in short-run fiber connections commonly used in test equipment. This prevents over-driving of sensitive detectors and increases the current into the monitor diode.

The OPV314F/315F series devices exhibit maximum forward peak current of 20mA, with reverse current of 35nA (max). Forward voltage is 1.6Vdc (min) to 2.2Vdc (max), with maximum reverse voltage of 10V. Total coupled power output is 500?W for the OPV314F series; 250?W for the OPV315F (tested at If = 7mA on 50/125?m fiber). Operating temperature ranges for the OPV314F /315F series devices is 0C to 70C.

The new series devices are packaged in a screw-mounted nickel-plated brass FC style receptacle with a footprint of 12.7-by-14.8mm, with a board-mounted profile of 8.1mm. The OPV314F/315F and the OPV314YF/315YF devices are optically and electrically identical, except for their pin-outs.

Typical pricing in 1,000-piece quantities for the OPV314F/315F series devices is $25 each. Samples are available for immediate delivery, with production lead-times from stock to 6 weeks.

- Janine Love

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