Abstract
The laser module contains a single-mode, distributed feedback
(DFB) laser diode. The epi-structure of the laser diode is grown
by MOCVD as a multiple quantum well heterostructure. The DFB
grating is defined by holography, and the laser diode is designed
with a co-planar contact metallization to ease RF connection. The
laser die is connected to a gold plated AlN microwave substrate
that also acts as a heat spreader. The microwave substrate
contains an impedance matching resistor for the RF signal as well
as a bias-T for the DC bias. 50 ohm Flexguide technology is used
for the interconnection between the microwave substrate and the RF
feed-through in the wall of the module. The module is build as a
14 pin butterfly package with the RF feed-through designed as a
coplanar 50 ohm impedance port. Included in the module are a
built-in optical isolator, a thermistor, a thermo-electric cooler,
and a photodiode for optical power monitoring.The RF input port
was connected to the driver circuit using a coplanar microwave
probe. A DC bias and a large signal modulation at 10 GHz was
applied to the module to generate chirped pulses. A linear as well
as a non-linear soliton compression was used with optical time
division multiplexing to generate a 40 Gb/s RZ pattern.The
presentation will report on further details on the laser module
including chirp characteristics, and show the eye diagrams taken
at 10 and 40 Gb/s.
Original language | English |
---|---|
Title of host publication | Proceedings, Annual meeting of the Danish Optical Society |
Number of pages | 27 |
Place of Publication | Lyngby |
Publisher | DOPS |
Publication date | 1999 |
Publication status | Published - 1999 |
Event | 1999 Annual meeting of the Danish Optical Society - Lyngby, Denmark Duration: 18 Nov 1999 → 19 Nov 1999 |
Conference
Conference | 1999 Annual meeting of the Danish Optical Society |
---|---|
Country/Territory | Denmark |
City | Lyngby |
Period | 18/11/1999 → 19/11/1999 |